<PAGE>   1
                                                                   EXHIBIT 10.21





                              QUALCOMM INCORPORATED


                              EXECUTIVE RETIREMENT
                           MATCHING CONTRIBUTION PLAN
                            (AS AMENDED AND RESTATED)





                                                EFFECTIVE DATE: DECEMBER 1, 1995
                                 AMENDED AND RESTATED EFFECTIVE: AUGUST 26, 1996
                               AMENDED AND RESTATED EFFECTIVE: DECEMBER 18, 1997
                                AMENDED AND RESTATED EFFECTIVE: JANUARY 19, 1998
                                  AMENDED AND RESTATED EFFECTIVE: APRIL 24, 1998
                                  AMENDED AND RESTATED EFFECTIVE: AUGUST 1, 1998
                               AMENDED AND RESTATED EFFECTIVE: FEBRUARY 20, 1999
                                 AMENDED AND RESTATED EFFECTIVE: JANUARY 1, 2000


<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                          PAGE
<S>               <C>                                                                     <C>
ARTICLE 1         INTRODUCTION...............................................................1

ARTICLE 2         DEFINITIONS................................................................2

ARTICLE 3         CONTRIBUTIONS..............................................................5

ARTICLE 4         WITHDRAWALS DURING EMPLOYMENT..............................................7

ARTICLE 5         EARNINGS ON PARTICIPANTS' ACCOUNTS AND PLAN INVESTMENTS....................7

ARTICLE 6         BENEFICIARY................................................................8

ARTICLE 7         VESTING....................................................................9

ARTICLE 8         DISTRIBUTION OF BENEFITS..................................................11

ARTICLE 9         ADMINISTRATION............................................................12

ARTICLE 10        MISCELLANEOUS.............................................................13
</TABLE>



                                       i.
<PAGE>   3

                                    ARTICLE 1
                                  INTRODUCTION

        WHEREAS, QUALCOMM INCORPORATED (the "Company") has established a
supplementary employee retirement plan as set forth herein (the "Plan") to
provide deferred compensation for a select group of management or highly
compensated employees of the Employer, originally effective December 1, 1995;
and

        WHEREAS, the Company amended and restated the Plan on August 26, 1996,
to refine the definition of "Base Salary;" on December 18, 1997, to limit the
instances in which termination of employment following a Change of Control will
fully vest the benefits provided to participants in the Plan, on January 19,
1998, to provide for the discretionary allocation of contributions by the Board,
to the accounts of Participants, on April 24, 1998, to adjust the formula for
Matching Contributions in order to improve the benefits provided to Participants
in the Plan and to add additional vesting schedules to allow certain
participants to accelerate the vesting in their participant Accounts, on August
1, 1998, to allow the transfer of funds under limited circumstances to or from
certain other nonqualified, unfunded, deferred compensation plans and to
determine when a termination of employment has occurred, and effective February
20, 1999 to permit employment with the Company's Affiliate, Wireless Knowledge,
Inc. to be considered for purposes of certain types of vesting under the Plan;
and

        WHEREAS, the Company has the legal authority to establish the Plan
pursuant to the laws of the State of Delaware and to amend the Plan pursuant to
Section 10.1 of the Plan; and

        WHEREAS, the Company intends to provide under the Plan that the Company
shall pay to Participants and their beneficiaries the entire cost of benefits
under the Plan from its general assets and set aside contributions by the
Company to meet its obligations under the Plan; and

        WHEREAS, the Company intends that the assets of the Plan and its
accompanying trust shall at all times be subject to the claims of the general
creditors of the Company in the event of the financial insolvency of the
Company; and

        WHEREAS, the Company intends that any rights of Participants in the Plan
and their beneficiaries be unsecured and unfunded for purposes of tax law and
for purposes of Title I of the Employee Retirement Income Security Act of 1974,
as amended ("ERISA"); and

        WHEREAS, the Company wishes to amend the Plan to add an additional
alternate vesting schedule;

        NOW, THEREFORE, the Company does hereby amend and restate the Plan as
follows, effective as of January 1, 2000, and does also hereby agree that the
assets of the Plan shall be identified, held, invested, and disposed of as
follows:



                                       1.
<PAGE>   4

                                    ARTICLE 2
                                   DEFINITIONS

        "AFFILIATE" includes any entity which controls, is controlled by, or is
under common control with the Company.

        "BENEFICIARY" means the beneficiary or beneficiaries designated by the
Participant who are to receive any distributions from the Plan payable upon the
death of the Participant.

        "BASE SALARY" means wages as defined in Section 3401(a) of the Code, any
annual cash incentive bonus which is normally paid by the Employer to a
Participant in December, and all other payments of compensation to a Participant
by the Employer (in the course of the Employer's trade or business) for which
the Employer is required to furnish the Participant a written statement under
Section 6041(d) or Section 6051(a)(3) of the Code, excluding the following
items: any bonus other than an annual cash incentive bonus which is normally
paid by the Employer to a Participant in the month of December, commissions, the
value of a qualified, incentive, or non-qualified stock option granted to the
Participant by the Company to the extent such value is includable in the
Participant's taxable income, reimbursements or other expense allowances, fringe
benefits (cash and non-cash), moving expenses, deferred compensation and welfare
benefits, and in-service withdrawals of amounts from the Plan or the Executive
Retirement Plan, but including amounts that are not includable in the gross
income of the Participant under a salary reduction agreement by reason of the
application of Sections 125, 402(a)(8), 402(h), or 403(b) of the Code or by
reason of an election of the Participant to defer amounts of base salary under
the Executive Retirement Plan. Base Salary must be determined without regard to
any rules under Section 3401(a) of the Code that limit the remuneration included
in wages based on the nature or location of the employment or the services
performed (such as the exception for agricultural labor in Section 3401(a)(2) of
the Code).

        "BOARD" means the Company's Board of Directors.

        "CAUSE" means any of the following: (i) an intentional act which
materially injures the Company (or any surviving entity following a Change of
Control); (ii) an intentional refusal or failure to follow lawful and reasonable
directions of the Board (or comparable body of the surviving entity following a
Change of Control) or an individual to whom the Participant reports (as
appropriate); (iii) a willful and habitual neglect of duties; or (iv) a
conviction of a felony involving moral turpitude which is reasonably likely to
inflict or has inflicted material injury on the Company (or any surviving entity
following a Change of Control).

        "CHANGE OF CONTROL" means: (i) a merger or consolidation in which the
Company is not the surviving corporation, (ii) a reverse merger in which the
Company is the surviving corporation, but the shares of the Company's common
stock outstanding immediately preceding the merger are converted by virtue of
the merger into other property, whether in the form of securities, cash, or
otherwise, (iii) a transaction in which beneficial ownership of at least thirty
percent (30%) of the shares of the Company's common stock is no longer held by
those shareholders (or their affiliates) holding such beneficial ownership
immediately prior to such transaction, (iv) the sale of all or substantially all
of the Company's assets, or (v) the acquisition



                                       2.
<PAGE>   5

by any person or group of related persons of beneficial ownership of at least
thirty percent (30%) of the Company's outstanding voting securities.

        "COMPENSATION COMMITTEE" means the Compensation Committee of the
Company's Board of Directors.

        "EARLY RETIREMENT AGE" means the time that a Participant attains age
62-1/2 while employed by the Employer and completes ten (10) Years of Service
for Vesting (as defined in the Executive Retirement Plan).

        "EFFECTIVE DATE" means December 1, 1995.

        "ELIGIBLE EMPLOYEE" means an employee of the Employer who is a member of
a select group of management or highly compensated employees and who has been
chosen by the Plan Administrator, in the Plan Administrator's sole discretion,
to be eligible to participate in the Plan. For purposes of the Plan, the phrase
"select group of management or highly compensated employees" in a given Plan
Year shall include those individuals selected by the Plan Administrator from
that group of individuals who hold the position of Office of the Chair,
Corporate Senior Vice President, Division President, Corporate Vice President,
Division Senior Vice President, Division Vice President, or a position of
equivalent seniority and responsibility with the Employer.

        "EMPLOYER" means QUALCOMM Incorporated, a Delaware corporation, QUALCOMM
Investments, QUALCOMM International, any succeeding or continuing corporation of
any of the foregoing, and any other parent or subsidiary corporation of the
Company which the Compensation Committee permits to adopt the Plan.

        "ENROLLMENT AGREEMENT" means the agreement or agreements entered into by
a Participant under the Executive Retirement Plan which specifies the
Participant's Beneficiary and the Participant's election of form of payment on
termination of employment and certain withdrawals during employment.

        "EXECUTIVE RETIREMENT PLAN" means the QUALCOMM Incorporated Executive
Retirement Contribution Plan, adopted effective as of December 1, 1995, as
amended from time to time.

        "FAIR MARKET VALUE" means, with respect to a single day on which the
Company's common stock is actively traded on the public market, the closing
sales price for the Company's common stock for such day as reported on an
established securities exchange or automated quotation system (including NASDAQ)
on which the Company's common stock is traded, or if the stock is actively
traded on more than one such exchange or system, the one with the highest
trading volume for the Company's common stock on such day.

        "GOOD REASON" means (i) reduction of Participant's rate of compensation
as in effect immediately prior to the occurrence of a Change of Control, (ii)
failure to provide a package of welfare benefit plans which, taken as a whole,
provide substantially similar benefits to those in



                                       3.
<PAGE>   6

which the Participant is entitled to participate immediately prior to the
occurrence of a Change of Control (except that employee contributions may be
raised to the extent of any cost increases imposed by third parties) or any
action by the Company which would adversely affect Participant's participation
or reduce Participant's benefits under any of such plans, (iii) change in
Participant's responsibilities, authority, title or office resulting in
diminution of position, excluding for this purpose an isolated, insubstantial
and inadvertent action not taken in bad faith which is remedied by the Employer
promptly after notice thereof is given by Participant, (iv) request that
Participant relocate to a worksite that is more than 50 miles from his or her
prior worksite, unless Participant accepts such relocation opportunity, (v)
material reduction in Participant's duties, (vi) failure or refusal of a
successor to the Employer to assume the Employer's obligations under the Plan,
or (vii) material breach by the Employer or any successor to the Employer of any
of the material provisions of the Plan.

        "NORMAL RETIREMENT AGE" means the time that a Participant attains age 65
while employed by the Employer.

        "PARTICIPANT" means any Eligible Employee selected by the Plan
Administrator and any individual whose benefits under the Plan have not been
distributed in their entirety.

        "PARTICIPANT'S ACCOUNT" means the individual account maintained for a
Participant by the Plan Administrator in accordance with the terms of the Plan
and the Trust Agreement.

        "PLAN ADMINISTRATOR" means the committee of one or more individuals
selected by the Compensation Committee to control and manage the operation and
administration of the Plan.

        "PLAN YEAR" means the 12 consecutive month period beginning on January 1
and ending on the following December 31. Notwithstanding the foregoing, the
Plan's initial Plan Year shall commence on December 1, 1995 and end on December
31, 1995.

        "TOP HAT PLAN" means a non-qualified deferred compensation plan for a
select group of management or highly compensated employees within the meaning of
section 401(a)(1) of ERISA.

        "TRUST" means the legal entity created by the Trust Agreement.

        "TRUST AGREEMENT" means that trust agreement entered into between the
Company and the Trustee to hold the assets of the Plan.

        "TRUSTEE" means the original Trustee named in the Trust Agreement and
any duly appointed and acting successor Trustee(s) which shall be appointed by
the Employer and may consist of one or more persons.



                                       4.
<PAGE>   7

                                    ARTICLE 3
                                  CONTRIBUTIONS

        3.1 All non-discretionary contributions ("Match Contributions") to the
Plan with respect to a given Participant shall be made by the Company in the
amount determined under the following formula.

        The Company will make a Match Contribution to the Plan with respect to a
Participant for a Plan Year in an amount equal to fifty percent (50%) of the
amount which such Participant has authorized to be withheld from his or her
compensation (as defined in the Executive Retirement Plan) which would have
otherwise been paid during such Plan Year and which is contributed to the
Executive Retirement Plan on his or her behalf.

        For Plan Years prior to Plan Year 1998, the Match Contribution to the
Plan with respect to a Participant for a given Plan Year shall not exceed 7.5%
(or 50% of 15%) of such Participant's Base Salary for the fiscal year of the
QUALCOMM Inc. Employee Savings and Profit Sharing Plan (the "401(k) Plan") which
ends with or within the Plan Year, reduced by the lesser of 50% of the limit
established under section 402(g) of the Code for the calendar year which ends
with or within such Plan Year (i.e., 50% of $9,240 for calendar year 1995) or
50% of the maximum amount which the Plan permits a Participant to contribute to
the 401(k) Plan for the fiscal year of the 401(k) Plan which ends with or within
such Plan Year (the "401(k) Annual Matching Contribution Limit").

        For Plan Year 1998, the Match Contribution to the Plan with respect to a
Participant shall not exceed the sum of 7.5% (or 50% of 15%) of the wages
portion of such Participant's Base Salary (excluding all items of compensation
listed as being excluded from the definition of Base Salary and also excluding
the annual cash incentive bonus that is normally paid by the Employer to the
Participant in the month of December) and 10% (or 50% of 20%) of the portion of
such Participant's Base Salary that is attributable to the annual cash incentive
bonus that is normally paid by the Employer to the Participant in the month of
December for the fiscal year of the 401(k) Plan which ends with or within the
Plan Year, reduced by the lesser of 50% of the limit established under section
402(g) of the Code for the calendar year which ends with or within such Plan
Year (i.e., 50% of $10,000 for calendar year 1998) or 50% of the 401(k) Annual
Matching Contribution Limit.

        For Plan Years commencing after Plan Year 1998, the Match Contribution
to the Plan with respect to a Participant for a given Plan Year shall not exceed
10% (or 50% of 20%) of such Participant's Base Salary for the fiscal year of the
401(k) Plan which ends with or within the Plan Year, reduced by the lesser of
50% of the limit established under section 402(g) of the Code for the calendar
year which ends with or within such Plan Year or 50% of the 401(k) Annual
Matching Contribution Limit.

        The Company's Match Contribution to the Plan for a given Participant for
a specified quarterly contribution period as described in Section 3.4 shall be
equal to fifty percent (50%) of the amount which the Participant has authorized
to be withheld from his or her compensation (as defined in the Executive
Retirement Plan) for contribution to the Executive Retirement Plan



                                       5.
<PAGE>   8

which would have otherwise been paid during such quarterly contribution period,
subject to a maximum of 2.5% (1.875% for Plan Years prior to Plan Year 1998) of
such Participant's Base Salary for the fiscal year of the 401(k) Plan ending
with or within the Plan Year with respect to which such quarterly contribution
is made, and further reduced by 25% of the 401(k) Annual Matching Contribution
Limit for the fiscal year of the 401(k) Plan ending with or within the Plan Year
in which such quarterly contribution period falls. Notwithstanding the
foregoing, the Company's Match Contribution to the Plan for a given Participant
for the final quarterly contribution period for a given Plan Year shall be equal
to the annual Match Contribution for such Participant for that Plan Year
calculated by applying the rules set forth in the preceding paragraph, reduced
by the sum of the Match Contributions made by the Company for the first three
quarterly contribution periods of that Plan Year. Furthermore, notwithstanding
any other provision of the Plan to the contrary, the Company's Match
Contribution for a given Participant for a specified quarterly contribution
period shall be rounded up to the next whole number of shares of the Company's
common stock. No Participant shall be permitted to make or authorize any
contributions to the Plan, whether by means of authorized withholding and
deferral of compensation or otherwise.

        No entity which is a part of the Employer other than the Company shall
have any obligations to make any contributions to the Plan, pay any benefits to
any Participant created by the Plan, or have any other financial obligation or
liability as a result of the establishment, operation or termination of the
Plan.

        3.2 From time to time the Company may, as recommended by the
Compensation Committee to the Board, and approved by the Board in its complete
discretion, make a discretionary contribution of less than twenty-five thousand
(25,000) shares to a Participant's Account, for one or more Participants, to
recruit or retain Participants as employees of the Company.

        3.3 All contributions to the Plan shall be made solely in the form of
whole shares of the Company's common stock. For purposes of converting the
Company's contribution from a dollar value as determined under Section 3.1 to a
number of whole shares of the Company's common stock which shall be contributed
for a quarterly contribution period as described in Section 3.4, the Fair Market
Value of the Company's common stock shall be the average of the closing sales
prices for the Company's common stock for a period of the last ten (10) trading
days within such quarterly contribution period.

        3.4 Match Contributions shall be made to the Plan by the Company for a
given Plan Year on a quarterly basis. The first quarterly Match Contribution
shall be made as soon as administratively reasonable after March 31 and shall
relate to contributions on compensation received or otherwise receivable by
Participants on or after January 1 and on or before the next following March 31.
The second quarterly Match Contribution shall be made as soon as
administratively reasonable after June 30 and shall relate to contributions on
compensation received or otherwise receivable by Participants after March 31 and
on or before the following June 30. The third quarterly Match Contribution shall
be made as soon as administratively reasonable after September 30 and shall
relate to contributions on compensation received or otherwise receivable by
Participants after June 30 and on or before the following September 30.



                                       6.
<PAGE>   9

The fourth quarterly Match Contribution shall be made as soon as
administratively reasonable after December 31 and shall relate to contributions
on compensation received or otherwise receivable by Participants after September
30 and on or before the last day of such Plan Year. However, the Match
Contribution for the Plan's initial Plan Year shall be made as soon as
administratively reasonable after December 31, 1995 and shall relate to
contributions on compensation received or otherwise receivable by Participants
during the month of December 1995.

        Discretionary contributions made pursuant to Section 3.2 may be made at
any time.

        3.5 All contributions to the Plan made by the Company shall be held as
an asset of the Company, and the Company shall deposit such contributions (less
any applicable tax withholding required by law) into the Trust.

        3.6 The Company, through the Plan Administrator, has the power to
establish rules and from time to time to modify or change such rules governing
the manner and method by which contributions are made, but only the Compensation
Committee may change the contribution formula set forth in Section 3.1 of the
Plan.

        3.7 All deposits to the Trust made under the Plan on behalf of a
Participant shall be reflected by a credit in the same amount to such
Participant's Account. A Participant's Account is a bookkeeping record of all
amounts deposited in the Trust on behalf of such Participant, and any earnings
allocated to such Account as provided in the Plan, for purposes of determining
the Participant's interest in the Trust, and shall be accounted for and reported
in terms of whole shares of the Company's common stock.

        3.8 Notwithstanding any other provision of the Plan to the contrary, the
maximum number of shares which may be contributed to the Plan shall be eight
hundred thousand (800,000) shares of the Company's common stock (after giving
effect to the 2:1 split in the Company's common stock effective May 10, 1999,
and the 4:1 split in the Company's common stock effective December 30, 1999).

                                    ARTICLE 4
                          WITHDRAWALS DURING EMPLOYMENT

        4.1 A Participant may request a withdrawal of some or all of his or her
benefits from the Plan while remaining employed by the Employer, but whether or
not such a request is approved shall be in the sole discretion of the Plan
Administrator.

                                    ARTICLE 5
             EARNINGS ON PARTICIPANTS' ACCOUNTS AND PLAN INVESTMENTS

        5.1 All contributions will be made in shares of the Company's common
stock. In the event that the Trust for any reason holds cash or other property
sufficient to purchase a whole share of the Company's common stock, the Trustee
shall arrange to acquire additional shares of the Company's common stock, either
by purchasing such shares in the public market or by



                                       7.
<PAGE>   10

acquiring such shares directly from the Company. In the event that the Trust for
any reason holds cash or other property in an amount insufficient to purchase a
whole share of the Company's common stock, such amount shall be held in cash or
a cash equivalent determined by the Plan Administrator.

        5.2 All contributions and other amounts governed by the terms of the
Plan and Trust Agreement, including all investments purchased with such amounts
and all income attributable thereto, shall remain (until distributed to a
Participant or Beneficiary) the property of the Company as provided under the
Plan and Trust Agreement and shall be subject to the claims of the Company's
general creditors in the event of the Company's financial insolvency. No
Participant or Beneficiary shall have any secured or beneficial interest in any
property, rights or investments held by the Company, the Employer or the Trustee
in connection with the Plan.

        5.3 Each Participant's Account shall be invested in shares of the
Company's common stock and shall be accounted for and reported in terms of whole
shares of the Company's common stock.

        5.4 Earnings shall be calculated and allocated as of the last day of
each Plan Year and such other dates as shall be determined by the Plan
Administrator in the Plan Administrator's sole discretion.

        5.5 Notwithstanding any other provision of the Plan to the contrary, and
intending to elaborate on the other provisions of this Article 5, any
transaction which might cause the Trust to hold any property other than a single
class of the Company's securities (such as cash) as a result of any transaction
(such as the payment of a cash dividend), and after the completion of such
transaction that other property does not comprise a majority of the Plan's
assets (by value) held by the Trust, then such property shall be allocated to
Participants' Accounts on a provisional basis, the Trustee shall use such
property to acquire additional shares of the same class of the Company's
security held by the Trust, and each Participant's Account shall then be rounded
to the nearest whole number of shares of such security. Any remaining property
other than the Company's securities shall be held unallocated in the Trust. If
after completing these actions the number of shares of the Company's securities
held by the Trust is less than the sum of the shares allocated to the
Participants' Accounts, then the Company shall contribute sufficient additional
shares to the Trust to make up the difference. If the sum of the number of
shares allocated to the Participants' Accounts is less than the number of shares
of the Company's securities held by the Trust, then all Participants whose
Account balances were rounded down shall be ranked in order based on the size of
the fractional share allocated to their Accounts prior to such rounding, and the
Accounts of such Participants shall be increased to the next higher whole share
in their order of ranking, one by one, until the number of shares allocated to
the Participants' Accounts equals the number of shares of the Company's
securities held by the Trust.

                                    ARTICLE 6
                                   BENEFICIARY

        6.1 The Participant's Enrollment Agreement shall designate the
Beneficiary who is to receive a distribution of the value of a Participant's
Account in the event of such Participant's



                                       8.
<PAGE>   11

death. If the Participant has not properly designated a Beneficiary, or if for
any reason such designation shall not be legally effective, or if said
designated Beneficiary shall predecease the Participant, then the Participant's
Beneficiary shall be determined by the terms of the Executive Retirement Plan.
The other terms and conditions of a Participant's selection of a Beneficiary
shall also be determined by the Executive Retirement Plan.

                                    ARTICLE 7
                                     VESTING

        7.1 The value of a Participant's Account at the time of vesting (i.e.,
to the extent not forfeited earlier) shall vest in accordance with whichever one
of the following schedules results in the largest vested balance in such
Participant's Account:

               (a) One hundred percent (100%) shall be vested upon the
occurrence of such Participant's death, termination of employment on account of
total and permanent disability, or attainment of Normal Retirement Age while
employed by the Employer. "Total and permanent disability" means a medically
determinable physical or mental impairment which renders the Participant unable
to engage in any substantial gainful activity and which can be expected to
result in death or which has lasted or can be expected to last for a continuous
period of not less than twelve (12) months.

               (b) One hundred percent (100%) of all contributions
(discretionary and non-discretionary) made on the Participant's behalf for a
Plan Year shall be vested on the first day of the eleventh Plan Year that
follows such Plan Year, provided that the Participant has not terminated
employment with all Employers by that date.

               (c) For a Participant who has attained at least age 61 and has
completed three (3) Years of Service for Vesting (as defined in the Executive
Retirement Plan), then the value of such Participant's Account shall be vested
on the day on which the foregoing conditions are satisfied, provided that the
Participant has not terminated employment with all Employers by that date (the
"Age 61 & 3 Vesting Date"), in an amount determined by multiplying the value of
such Participant's Account, on such date, by the product of 20% multiplied by
the number of whole years (with fractional years rounded down) by which such
Participant's age exceeds 60. On each anniversary of the Age 61 & 3 Vesting Date
thereafter, the vested value of such Participant's Account shall be recalculated
again by using the formula for calculating the vested value of such
Participant's Account on the Age 61 & 3 Vesting Date, provided that the
Participant has not terminated employment with all Employers by that date.

               (d) In determining the vesting of persons who were Participants
in the Plan on or prior to April 24, 1998, the following vesting schedule shall
also be considered. Upon satisfaction of the age and service requirements for
Early Retirement Age while employed by the Employer, then such a Participant's
Account shall become vested in that percentage determined according to the
following formula: one hundred percent (100%) reduced by ten percent (10%) for
each full six-month period during which the Participant must remain employed
with the Employer in order to reach his or her Normal Retirement Age while
employed by the Employer. Upon completing each additional six-month period of
employment with the Employer after



                                       9.
<PAGE>   12

having attained Early Retirement Age while employed by the Employer, such a
Participant's Account shall be vested in an additional ten percent (10%).

               (e) Partially or fully vested in the complete discretion of the
Compensation Committee.

               (f) One hundred percent (100%) vested in the event of a Change of
Control, if at any time within twenty-four (24) months of the Change of Control,
the Participant's employment with the Employer is involuntarily terminated by
the Employer without Cause, or if such employment is voluntarily terminated by
the Participant with Good Reason (which Good Reason must occur at or after the
time of the Change of Control).

               (g) Effective January 1, 2000, for determining the vesting of
contributions (whenever made) to the account of a person who is a Participant on
or after that date the following schedule shall also be considered: twenty-five
percent (25%) of the contributions relating to a given Plan Year (including any
earnings thereon) shall vest at the end of each Plan Year thereafter; provided,
however, that (i) the Participant is an employee of the Employer for the entire
duration of such subsequent Plan Year, and (ii) the Participant is deferring
compensation into the Executive Retirement Plan during that subsequent Plan
Year. If the Participant takes an unpaid leave of absence that either is
approved by the Employer or is legally required to be made available to the
Participant, and from which it is anticipated that the Participant will return
to service as an employee of the Employer, then the duration of that leave of
absence will not be considered for purposes of determining whether the
Participant has been employed for the entire duration of a Plan Year (e.g.,
vacation, sabbatical, paid time off for illness or injury of the Participant or
to care for a member of the Participant's family or circle of friends due to
that person's illness or injury are instances in which the Participant would be
anticipated to return to active service as an employee of the Employer). If the
Participant is not an employee of the Employer for the entire duration of a
subsequent Plan Year or is not deferring compensation into the Executive
Retirement Plan during such subsequent Plan Year, then all further vesting under
this provision shall be suspended for that Participant. Suspended vesting
installments relating to contributions made to a Participant's Account for a
particular Plan Year shall vest as follows: (i) the suspended vesting
installment that would have been first to vest if the above conditions had been
met shall vest at the end of the next Plan Year following such suspension in
which (A) the Participant is an employee of the Employer for the entire duration
of such Plan Year, and (B) the Participant is deferring compensation into the
Executive Retirement Plan during such Plan Year; and (ii) only one suspended
vesting installment of the suspended vesting installments relating to
contributions made for a particular Plan Year shall vest in that later Plan
Year. The other suspended vesting installments relating to contributions made to
a Participant's Account for a particular Plan Year shall vest one at a time in
later Plan Years in which the conditions set forth in the preceding sentence are
met.

        7.2 For purposes of Sections 7.1(b), (c) and (d) (including the
calculation of Years of Service for Vesting), a Participant's service and
employment with Leap Wireless International, Inc. ("Leap") shall be treated as
service and employment with the Employer if such Participant commenced
employment with Leap on or before October 1, 1998 and such employment was
immediately subsequent to employment with the Employer.



                                      10.
<PAGE>   13

        7.3 For purposes of Sections 7.1(b), (c) and (d) (including the
calculation of Years of Service for Vesting), a Participant's service and
employment with Wireless Knowledge, Inc. ("WK") shall be treated as service and
employment with the Employer if such Participant (i) received a discretionary
contribution pursuant to Section 3.2, (ii) commenced employment with WK on or
before April 1, 1999 and (iii) such employment was concurrent with, or
immediately subsequent to, employment with the Employer or an Affiliate.

        7.4 Notwithstanding the vesting of some or all of the amounts credited
to Participants' Accounts under the Plan, all amounts credited to all
Participants' Accounts shall remain available to satisfy the claims of the
Company's creditors in the event of the Company's financial insolvency as
defined in the Trust Agreement. Amounts credited to a Participant's Account
which are not vested at the time that the Participant terminates employment with
the Employer shall be forfeited and applied to reduce the Company's future
contributions or to pay costs associated with the operation and administration
of the Plan. A Participant who forfeits any such amounts shall have no rights to
the restoration of such amounts in the event that he or she once again becomes
employed by the Employer and is eligible to participate in the Plan.

                                    ARTICLE 8
                            DISTRIBUTION OF BENEFITS

        8.1 A Participant shall automatically receive a distribution of his or
her vested benefits in the Plan as soon as administratively reasonable following
the termination of the Participant's employment with the Employer. The amount of
such distribution shall be equal to the final balance of such vested benefits
credited to such Participant's Account as of the date of such termination, plus
any subsequent contributions. The distribution shall be paid only in whole
shares of the Company's common stock or stock of Leap Wireless International,
Inc., a Delaware corporation and any succeeding or continuing corporation of the
foregoing. A distribution of vested benefits will be made to such Participant
based upon the payment option elected by the Participant. The forms of payment
options and the terms and conditions for making and changing an election
regarding a payment option shall be the same as provided for under the Executive
Retirement Plan.

        8.2 Any benefits paid upon the death of a Participant must be paid to
the Beneficiary designated by such Participant in the Enrollment Agreement. Such
death benefits shall be paid in the form of payment determined under the
Executive Retirement Plan.

        8.3 In the event that a Participant or Beneficiary elects to receive his
or her distribution in the form of installment payments in accordance with the
terms of the Executive Retirement Plan, the Plan Administrator shall require
that all installment payments be made solely in whole shares of the Company's
common stock and shall direct the Trustee to make such payments in accordance
with that requirement.

        8.4 The Plan Administrator shall have the authority to withhold from a
distribution to a Participant or Beneficiary or from a Participant's Account any
amount needed to satisfy the Employer's income or employment withholding tax
obligations with respect to such distribution



                                      11.
<PAGE>   14

or upon the vesting of a Participant's Account and may also arrange with the
Participant to allow the Participant to make payment to the Employer to satisfy
such obligations.

        8.5 In the event that any distribution from the Plan received or to be
received by a Participant (a "Distribution") would (i) constitute a "parachute
payment" within the meaning of Section 280G of the Code, and (ii) but for this
Section 8.5, cause the Participant to become subject to the excise tax imposed
by Section 4999 of the Code (the "Excise Tax") or increase such Participant's
Excise Tax liability, then such Distribution may be reduced to the largest
amount which the Participant, in his or her sole discretion, determines would
result in no portion of the Distribution being subject to the Excise Tax. The
determination by a Participant of any reduction shall be conclusive and binding
upon the Employer, the Company, and the Plan Administrator. The Plan
Administrator shall reduce a Distribution only upon written notice by the
Participant indicating the amount of such reduction and/or shall accept the
return of some or all of a Distribution previously made to a Participant. Any
amounts returned to the Plan pursuant to this Section 8.5 shall be treated as a
forfeiture and shall be used to reduce the Company's future contributions to the
Plan or to pay costs associated with the operation and administration of the
Plan.

        8.6 For purposes of this Article 8, the following shall be deemed to be
employment of the Participant with the Employer: (i) employment by an Affiliate,
(ii) the provision of consulting services to the Employer or Affiliate, (iii)
employment by Leap Wireless International, Inc. that commences prior to October
1, 1998, and is simultaneous with or immediately after employment with the
Employer or an Affiliate, and (iv) if the Participant has received a
discretionary contribution pursuant to Section 3.2, then employment by WK that
commences prior to April 1, 1999, and is simultaneous with or immediately after
employment with the Employer or an Affiliate.

                                    ARTICLE 9
                                 ADMINISTRATION

        9.1 The Plan Administrator shall be a committee of one or more
individuals which has the authority to control and manage the operation and
administration of the Plan. The Plan Administrator may also be referred to as
the Plan Committee. Administrative concerns of the Plan include, but are not
limited to, the enrollment of Eligible Employees as Participants, the
maintenance of all records, the direction of the Trustee to distribute benefits
to Participants and their Beneficiaries, the interpretation of the Plan, and the
establishment of rules and procedures for the operation of the Plan Committee.
The initial number of members of the Plan Committee shall be three (3), until
such number is changed by the approval of the majority of the Plan Committee. A
member of the Plan Committee must be an employee of the Employer or member of
the Board and shall continue to serve until such member (i) resigns, (ii) is
removed or (iii) terminates employment with the Employer and no longer serves on
the Board for any reason. The approval of at least two-thirds of the members of
the Plan Committee shall be required to remove a member of the Plan Committee. A
majority of the remaining members of the Plan Committee may fill one or more
vacancies on the Plan Committee. The Plan Committee may allocate and delegate
some or all of its responsibilities described in this Article 9. The Plan
Committee's authority under this Article 9.1 shall at times be subject to the
ability of the



                                      12.
<PAGE>   15

Compensation Committee to remove any or all of the members of the Plan Committee
for any reason, change the number of members of the Plan Committee, fill
vacancies on such committee, and establish rules and procedures for such
committee.

        9.2 Any decision or action of the Plan Administrator with respect to any
question arising out of or in connection with the administration, interpretation
and application of the Plan and the rules and regulations promulgated thereunder
or a Participant's Enrollment Agreement shall be final and conclusive and
binding upon all persons having any interest in the Plan.

        9.3 All costs and expenses related to the operation and administration
of the Plan shall be paid by the Company.

                                   ARTICLE 10
                                  MISCELLANEOUS

        10.1 AMENDMENT OF PLAN. The Company reserves the right to amend any
provisions of the Plan at any time upon an action by a majority of the Plan
Committee or the Compensation Committee to the extent that it may deem advisable
without the consent of the Participant or any Beneficiary; provided, however,
that no such amendment shall impair the rights of any Participant or Beneficiary
with respect to either contributions made or authorized before such amendment or
any earnings on such contributions credited to a Participant's Account before
such amendment. Notwithstanding the foregoing, the formula for determining the
Employer's contributions may only be amended by the Board or the Compensation
Committee. Any such amendment to the Plan shall be submitted for the approval of
the Company's stockholders if such approval is required to comply with the
requirements of Rule 16b-3 promulgated under the Securities Exchange Act of
1934, as amended, or the terms of any listing agreement with any established
securities exchange or automated quotation system (including NASDAQ) on which
the Company's common stock is listed for trading, or for any other reason
determined by the Board or the Compensation Committee after consulting with
legal counsel.

        10.2 TERMINATION OF PLAN. The Company reserves the right to terminate
the Plan at any time upon an action by the Board or the Compensation Committee.
Distribution of any benefits to a Participant shall generally commence only upon
the occurrence of the termination of employment of a Participant; provided,
however, that the Plan Administrator shall retain the sole discretion to make
payment to a Participant in the form of a single, lump sum distribution at any
time following the termination of the Plan.

        10.3   TRANSFERS TO OTHER PLANS.

               (a) In the event that a Participant employed by the Employer or
an Affiliate of the Employer simultaneously or subsequently becomes employed by
Leap Wireless International, Inc., the Plan Administrator shall have the right,
but no obligation, to direct the Trustee to transfer funds in an amount equal to
the amount credited to such Participant's Account (the "Transferred Account") to
a trust established under a Transferee Plan. The Plan Administrator shall
determine, in its sole discretion, whether such transfer shall be made and the



                                      13.
<PAGE>   16

timing of such transfer. Such transfer shall be made only if, and to the extent
that, approval of such transfer is obtained from the Trustee.

               (b) For purposes of this Section 10.3, "Transferee Plan" shall
mean an unfunded, nonqualified deferred compensation plan described in Sections
201(2), 301(a)(3) and 401(a)(1) of the Employee Retirement Income Security Act
of 1974 ("ERISA") maintained by Leap Wireless International, Inc.

               (c) No transfer shall be made under this Section 10.3 unless the
Participant for whose benefit the Transferred Account is held executes a written
waiver of all of such Participant's rights and benefits under this Plan in such
form as shall be acceptable to the Plan Administrator.

        10.4   TRANSFERS IN FROM OTHER PLANS.

               There may be transferred directly from the trustee of another
nonqualified, unfunded, deferred compensation plan ("Other Plan") to the
Trustee, subject to the approval of the transferor corporation maintaining the
Other Plan, the Plan Administrator, and the Eligible Employee, funds in an
amount not to exceed the amount credited to the Other Plan accounts maintained
for the benefit of that Eligible Employee. Amounts transferred pursuant to this
Section 10.4, and any gains or losses allocable thereto, (i) shall be accounted
for separately ("Transfer Account") from amounts otherwise allocable to the
Eligible Employee under this Plan, and (ii) the Transfer Account shall be
distributed in accordance with the Eligible Employee's deferral election under
the Other Plan, as such election may be amended pursuant to the terms of the
Other Plan. Subsequent earnings on the amount in the Transfer Account shall be
credited to a separate account for the Eligible Employee established pursuant to
this Plan and shall be determined under the Plan's investment procedures in
Article 5.

        10.5 The Plan Administrator may at any time make rules as it determines
necessary regarding the administration of the Plan which are not inconsistent
with the Plan.

        10.6 The Plan Administrator may, from time to time, hire outside
consultants, accountants, actuaries, legal counsel, or recordkeepers to perform
such tasks as the Plan Administrator may from time to time determine.

        10.7 In the event that any Participants are found to be ineligible, that
is, not members of a select group of management or highly compensated employees
eligible to participate in a Top Hat Plan, according to a determination made by
the United States Department of Labor, the Plan Administrator will take whatever
steps it deems necessary, in its sole discretion, to equitably protect the
interests of the affected Participants.

        10.8 No benefits under the Plan shall be subject in any manner to
anticipation, alienation, sale, transfer, assignment, pledge, encumbrance,
attachment or garnishment. The provisions of the Plan shall be binding upon and
inure to the benefit of the Company, the Employer and Participants and their
respective successors, heirs, personal representatives, executors,
administrators, and legatees.



                                      14.
<PAGE>   17

        Notwithstanding any other provision in the Plan to the contrary, any
amount credited to a Participant's Account shall be paid from the Trust only to
the extent that the Company is not financially insolvent at the time of such
payment. Whether or not the Company is financially insolvent shall be determined
by the Trustee in the Trustee's sole discretion based upon the standard for
financial insolvency set forth in the Trust Agreement. Any benefits under the
Plan represent an unfunded, unsecured promise by the Company to pay these
benefits to the Participants when due. A Participant has no greater right to any
assets in the Trust than the general creditors of the Company in the event that
the Company shall become financially insolvent. Trust assets can be used to pay
only benefits under the Plan or the claims of the Company's general creditors or
the expenses of administering the Plan and Trust to the extent permitted under
the terms of the Trust Agreement.

        10.9 The Plan, the Trust Agreement, and the Participant's Enrollment
Agreement, and any subsequently adopted amendment to any of these documents,
shall constitute the total agreement or contract between the Company and such
Participant regarding the Plan. No oral statement regarding the Plan may be
relied upon by the Participant. If there are any conflicts between the terms of
the Plan and the Trust Agreement, and a Participant's Enrollment Agreement, the
terms of the Plan and the Trust Agreement shall control.

        10.10 The terms and conditions of the Plan shall not be deemed to
constitute a contract of employment between the Employer and the Participant.
Such employment is hereby acknowledged to be an "at will" employment
relationship that can be terminated at any time for any reason, with or without
cause, unless expressly provided in a written employment agreement or expressly
provided by law. Nothing in the Plan shall be deemed to give a Participant the
right to be retained in the service of the Employer, or to interfere with the
right of the Employer to discipline or discharge the Participant at any time.

        10.11 If any change is made to the Company's common stock because of a
change in the Company's capital structure not involving the receipt of
consideration by the Company, whether through merger, consolidation,
reorganization, recapitalization, stock dividend, dividend in property other
than cash, stock split, liquidating dividend, combination of shares, exchange of
shares, change in corporate structure or otherwise, then the class(es) and
number of shares that may be contributed by the Company under Section 3.8 and
the class(es) and number of shares held by the Trust will be appropriately
adjusted to reflect the impact of such change upon the Company's stockholders.
The conversion of any convertible securities issued by the Company shall not be
considered a transaction "involving the receipt of consideration by the
Company." In the event that such change causes the Trust to hold substantially
all of its assets in securities of the Company or a successor corporation to the
Company other than the Company's common stock, references in the Plan to the
Company's common stock shall mean such securities. After the occurrence of a
transaction described in this Section 10.11, the rounding rules set forth in
Section 5.5 shall be applied to ensure that each Participant's Account shall be
invested in the shares of the Company's common stock (or such other securities)
and shall be accounted for and reported in terms of whole shares of the
Company's common stock (or such other securities).

        10.12 The Company shall seek to obtain from each regulatory commission
or agency having jurisdiction over the Plan the authority as may be required to
contribute and distribute



                                      15.
<PAGE>   18

shares of the Company's common stock; provided, however, that this undertaking
shall not require the Company to register under the Securities Act of 1933, as
amended, or comparable securities law of any other applicable jurisdiction,
shares of the Company's common stock or any participation interest in the Plan
deemed to be a security. If, after reasonable efforts, the Company is unable to
obtain from any such regulatory commission or agency the authority which counsel
for the Company deems necessary for the lawful issuance of stock to the Plan or
distribution of stock from the Plan, the Company shall be relieved from any
liability for failure to issue the Company's common stock to the Plan, and the
Company, Employer, Plan Administrator and/or the Trustee shall be relieved from
any liability for failure to distribute the Company's common stock from the
Plan, as applicable, unless and until such authority is obtained.

        10.13 This Plan shall be construed under the laws of the State of
California, except to the extent that the laws of the State are preempted by
ERISA.

        IN WITNESS WHEREOF, the Plan is hereby adopted by a duly authorized
officer of QUALCOMM, Incorporated on this __ day of ________, 1999.

                                        QUALCOMM, INC.



                                        By:
                                            ------------------------------------

                                        Name:
                                               ---------------------------------

                                        Title:
                                               ---------------------------------



                                      16.