초록 ▼

The present invention involves demodulating a signal in a spread spectrum multiple access system employing a pilot on the forward link. The rake receiver separates the signal processing based on the period over which the processing occurs. Symbol rate processing is performed by a single time-shared

The present invention involves demodulating a signal in a spread spectrum multiple access system employing a pilot on the forward link. The rake receiver separates the signal processing based on the period over which the processing occurs. Symbol rate processing is performed by a single time-shared multiply-accumulate datapath that services multiple finger front ends and a searcher front end. The front ends are dedicated circuits that perform all chip rate processing, producing a data vector and asserting a flag indicating the results are ready to be serviced by the shared datapath. A datapath controller arbitrates use of the datapath between the finger front ends, the searcher front end, and combining functions, configuring the datapath to service them on a first-come, first-serve basis. The controller sequences the datapath through a fixed routine as dictated by the signal processing associated with the block being serviced.

대표청구항 ▼

[ I claim:] [1.] An integrated circuit for demodulating multiple instances of a spread spectrum signal over which symbols are transmitted at a symbol rate, wherein said symbols are divided into chips at a chip rate that is higher than the symbol rate comprising:a plurality of demod front ends for de

[ I claim:] [1.] An integrated circuit for demodulating multiple instances of a spread spectrum signal over which symbols are transmitted at a symbol rate, wherein said symbols are divided into chips at a chip rate that is higher than the symbol rate comprising:a plurality of demod front ends for demodulating the multiple instances of the spread spectrum signal at the chip rate; anda symbol processing system for processing each demodulated instance of the spread spectrum signal at said symbol rate in a time-divided manner.