MOBILE STATION DEMODULATOR OF DS/CDMA SYSTEM AND METHOD OF CANCELLATING PILOT SIGNAL USING THE SAME

摘要

PURPOSE: A mobile station demodulator of a DS-CDMA(Direct Sequence-Code Division Multiple Access) communication system is provided to remove an interference pilot signal. CONSTITUTION: A down-converter(201) converts a received signal into a baseband signal. A synchronous tracer(202) sets up a synchronization to the baseband signal. A pilot signal information estimator(206) receives the baseband signal to estimate necessary information from a forward signal of a specific cell, then generates a control signal. A pilot signal information generator(207) uses an estimating signal received from the pilot signal information estimator(206), and generates a pilot spread signal. An adder(205) adds the received signal from the pilot signal information generator(207). A subtracter(204) subtracts the received signal from the adder(205). A data demodulator(203) receives a baseband signal removed a pilot signal, and demodulates data.