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1 Final draft EN V1.1.1 ( ) European Standard (Telecommunications series) Fixed Radio Systems; Point-to-multipoint equipment; Part 3: Point-to-multipoint digital radio systems below 1 GHz - Additional parameters for FH-CDMA systems
2 2 Final draft EN V1.1.1 ( ) Reference DEN/TM Keywords CDMA, DRRS, FWA, multipoint, radio, RLL 650 Route des Lucioles F Sophia Antipolis Cedex - FRANCE Tel.: Fax: Siret N NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on printers of the PDF version kept on a specific network drive within Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other documents is available at If you find errors in the present document, send your comment to: Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute All rights reserved.
3 3 Final draft EN V1.1.1 ( ) Contents Intellectual Property Rights...5 Foreword Scope Applications Frequencies References Definitions, symbols and abbreviations Definitions Symbols Abbreviations General characteristics General system architecture Frequency bands and channel arrangements Channel plan Duplex methods Compatibility requirements Transmission error performance Environmental conditions Equipment within weather protected locations (indoor locations) Equipment for non weather-protected locations (outdoor locations) Power supply Electromagnetic compatibility TMN interfaces Synchronization of interface bit rates Branching / feeder / antenna requirements Antenna radiation pattern Antenna port characteristics Frequency Hopping (FH) characteristics System parameters System capacity Round trip delay Transparency Voice coding methods Transmitter characteristics Transmitter output power Automatic Transmit Power Control (ATPC) Tx Local Oscillator (LO) frequency arrangements RF spectrum mask Radio frequency tolerance Spurious emissions Receiver characteristics Input level range Spurious emissions System performance Dynamic level range BER as a function of the RSL Interference sensitivity (external) Co-channel interference Adjacent channel interference Distortion sensitivity CW interference Two tone interference Impulsive interference...12
4 4 Final draft EN V1.1.1 ( ) 6 Types of interfaces at the subscriber equipment and the network exchange...12 History...13
5 5 Final draft EN V1.1.1 ( ) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to. The information pertaining to these essential IPRs, if any, is publicly available for members and non-members, and can be found in SR : "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to in respect of standards", which is available from the Secretariat. Latest updates are available on the Web server ( Pursuant to the IPR Policy, no investigation, including IPR searches, has been carried out by. No guarantee can be given as to the existence of other IPRs not referenced in SR (or the updates on the Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by Technical Committee Transmission and Multiplexing (TM), and is now submitted for the Vote phase of the standards Two-step Approval Procedure. The present document is part 3 of a multi-part deliverable covering the Fixed Radio Systems; Point-to-multipoint equipment, as identified below: Part 1: Part 2: Part 3: Part 4: Part 5: "Point-to-multipoint digital radio systems below 1 GHz - Common parameters"; "Point-to-multipoint digital radio systems below 1 GHz - Additional parameters for TDMA systems"; "Point-to-multipoint digital radio systems below 1 GHz - Additional parameters for FH-CDMA systems"; "Point-to-multipoint digital radio systems below 1 GHz - Additional parameters for FDMA systems"; "Point-to-multipoint digital radio systems below 1 GHz - Additional parameters for DS-CDMA systems". Proposed national transposition dates Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of withdrawal of any conflicting National Standard (dow): 3 months after publication 6 months after doa 6 months after doa
6 6 Final draft EN V1.1.1 ( ) 1 Scope 1.1 Applications 1.2 Frequencies 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. [1] EN : "Fixed Radio Systems Point-to-multipoint equipment; Part 1: Point-to-multipoint digital radio systems below 1 GHz - Common Parameters". 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in EN [1] and the following apply. Radio Frequency channel (RF channel): partition of a radio frequency band which may be assigned by the authorities in accordance with CEPT, ITU-R Recommendations or national authorities regulations on channel arrangement channel spacing: separation between the centre frequencies of neighbouring RF channels assigned band: aggregation of all RF channels assigned to a FH-CDMA system. The assigned band may consist of several non-contiguous RF channels (see figure 1) sub-channel: integer sub-division of the RF channel(s) as determined by the equipment manufacturer (see figure 1) Frequency Hopping (FH): spread spectrum technique whereby individual radio links are continually switched from one sub-channel to another. Such links are not constrained to a single RF channel dwell time: duration of a transmission on a particular sub-channel transition time: period between successive transmissions on different sub-channels during which no transmission is made hopping sequence: sequence of sub-channels which a particular link follows hopping period: time between the starts of successive transmissions on a different sub-channel. This is the sum of dwell time and transition time
7 7 Final draft EN V1.1.1 ( ) Sub-channel RF Channel Assigned Band Figure 1: Relationship between "sub-channel", "RF channel" and "assigned band" 3.2 Symbols 3.3 Abbreviations 4 General characteristics 4.1 General system architecture 4.2 Frequency bands and channel arrangements Channel plan Duplex methods 4.3 Compatibility requirements 4.4 Transmission error performance
8 8 Final draft EN V1.1.1 ( ) 4.5 Environmental conditions Equipment within weather protected locations (indoor locations) Equipment for non weather-protected locations (outdoor locations) 4.6 Power supply 4.7 Electromagnetic compatibility 4.8 TMN interfaces 4.9 Synchronization of interface bit rates 4.10 Branching / feeder / antenna requirements Antenna radiation pattern Antenna port characteristics 4.11 Frequency Hopping (FH) characteristics The hopping period shall not exceed 0,4 sec. 5 System parameters 5.1 System capacity
9 9 Final draft EN V1.1.1 ( ) 5.2 Round trip delay 5.3 Transparency 5.4 Voice coding methods 5.5 Transmitter characteristics Transmitter output power Automatic Transmit Power Control (ATPC) Tx Local Oscillator (LO) frequency arrangements RF spectrum mask The spectrum measurement point C' of system block diagram shall be performed with the maximum hold and appropriate time gating function on the spectrum analyser selected. The reference level of the output spectrum means that the 0 db level is the top of the modulated spectrum, disregarding the residual carrier. The mask does not include frequency tolerances.
10 10 Final draft EN V1.1.1 ( ) db A B C D khz Figure 2: Power spectrum mask Table 1: Channel spacing against spectrum mask reference points Relative level Point A 0dB Point B -25 db Point C -25 db Point D -45 db Channel spacing (MHz) 0,5 x channel spacing 0,8 x channel spacing 1,0 x channel spacing 1,5 x channel spacing 1 0,5 MHz 0,8 MHz 1 MHz 1,5 MHz 2 1 MHz 1,6 MHz 2,0 MHz 3,0 MHz Table 2: Spectrum analyser settings Res. BW Video BW Sweep time 30 KHz 300 Hz 10 s Radio frequency tolerance Spurious emissions
11 11 Final draft EN V1.1.1 ( ) 5.6 Receiver characteristics Input level range TheBERshallbelessthan10-3 for an input level range which exceeds 40 db Spurious emissions 5.7 System performance Dynamic level range Not applicable BER as a function of the RSL For a FH-CDMA signal, the receiver Bit Error Rate (BER) threshold shall be equal to or lower than the values stated below, referenced to point C in the system diagram (figure 2 of part 1), with no multipath signal distortion. Table 3: BER vs receiver input signal level Bit rate BER 10-3 BER ,5 Mbit/s ,0 Mbit/s ,75 Mbit/s NOTE 1: For these systems the reference levels may be calculated from the following formulas: For BER = 10-3 ( log 10 [bit rate Mbit/s]) dbm; For BER = 10-6 ( log 10 [bit rate Mbit/s]) dbm. NOTE 2: Incoherent demodulation may be used for packet data applications. When incoherent demodulation and higher modulation states are used, the signal levels specified above are increased by 7 db for 4FSK modulation and 15 db for 8FSK modulation Interference sensitivity (external) Co-channel interference For a system with an input wanted signal at a level greater by 1 or 3 db than the level specified in table 3, an applied additional co-channel interferer with uncorrelated like-modulation, at the levels indicated in table 4, shall not cause the BER to exceed 10-6.
12 12 Final draft EN V1.1.1 ( ) Table 4: Co-channel interference sensitivity Threshold Degradation Sub-Channel Spacing MHz 1dB Interference level (dbm) 3dB Interference level (dbm) 1, , , , , Adjacent channel interference All receive signal levels and interference level measurements are referred to point C of the system block diagram, given in figure 2 of part 1. The limits of adjacent channel interference for an uncorrelated like-modulated signal shall be as in table 5. Table 5: Adjacent channel sensitivity for BER = 10-6 Threshold degradation Sub-channel spacing MHz 1dB Interference level (dbm) 3dB Interference level (dbm) 1, , , , , Distortion sensitivity CW interference Two tone interference Impulsive interference 6 Types of interfaces at the subscriber equipment and the network exchange
13 13 Final draft EN V1.1.1 ( ) History Document history V1.1.1 January 2000 Public Enquiry PE : to V1.1.1 August 2000 Vote V : to