Patent ID: 9749155
Date: 2017-08-29
CPC Classifications: H04B,H04J,H04L

Claim:
1. A method of blindly estimating a wideband code division multiple access (WCDMA) orthogonal variable spreading factor (OVSF) of a signal analyzer, the method comprising: (a) setting an initial spreading factor (SF) to 512 and an index (idx) thereof to 0; (b) calculating a power average value of a symbol obtained by despreading descrambled data with an OVSF code set by increasing the index (idx) from ‘0’ by ‘1’; (c) determining an OVSF code by which the power average value is equal to or greater than a power reference value as a used OVSF code candidate and determining an OVSF code by which the power average value is less than the power reference value as an unused OVSF code; (d) comparing a zero crossing rate of a symbol, in which a power of the symbol obtained with the OVSF code candidate is less than the power average value and a zero crossing occurs in the symbol, with a reference value (T