Patent ID: 7477634

Claim:
A method for constructing a model of a sampled transmitted CDMA downlink signal, comprising: receiving a sampled signal at a first module ( 810 ), wherein the signal received at the first module has been filtered; receiving despread symbol data for all possible spread codes at a second module ( 820 ) from the first module; determining active codes of the possible spread codes in the filtered sampled signal by the second module; receiving from the first module, the despread symbol data identified with the active codes, at a third module ( 830 ); providing estimates of a symbol value and a gain based on the symbol data identified with the active codes by the third module; receiving the symbol value and gain estimates from the third module and the active codes from the second module at a fourth module ( 840 ); and constructing a model of the sampled transmitted CDMA downlink signal using the symbol value and gain estimates for the active codes by the fourth module.