Patent ID: 7161919
Filing Date: 2007-01-09
Classification: H04B

Abstract:
1. A method employed by a base station for recovering data transmitted over a plurality of channels employing wireless code division multiple access communication, comprising: a) receiving the plurality of channels as a received signal, each channel associated with a code; and b) subtracting for each of the plurality of channels others of the plurality of channels from the received signal and despreading a result of that subtracting by a delayed version for a first chip-code signal by a first channel mixer and filtered by a first channel filter, as data for that channel; and c) respreading that channel despread signal with a respective channel code; wherein the respreading channel code is aligned to a timing of the despread received signal; wherein despreading the result further comprises passing the result of the subtractor through a mixer together with a code of a channel excluded from the subtraction operation.