초록 ▼

A Code-Division Multiple Access (CDMA) receiver is disclosed which removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's receiver termin

A Code-Division Multiple Access (CDMA) receiver is disclosed which removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's receiver terminal (i.e., handset), the pilot signals of the interfering multipath components of the baseband received signal are detected and removed prior to demodulation of the desired multipath component. The pilot signal may be cancelled prior to or following the data accumulation stage.

대표청구항 ▼

[ We claim:] [1.] A code division multiple access, CDMA, receiver for receiving and demodulating a coherent CDMA signal including at least one user data channel and a separate pilot channel over a plurality of L paths, L> or =2, where a desired data channel is orthogonal to the pilot channel for a g

[ We claim:] [1.] A code division multiple access, CDMA, receiver for receiving and demodulating a coherent CDMA signal including at least one user data channel and a separate pilot channel over a plurality of L paths, L> or =2, where a desired data channel is orthogonal to the pilot channel for a given path, the CDMA receiver comprising ath demodulators, each demodulator for estimating a data channel and a pilot channel from a CDMA signal received over one of the L paths and for generating L-1 cancellation signals, and ubtractor means, each subtractor means for subtracting the L-1 cancellation signals produced by different ones of other L-1 path demodulators from the CDMA signal associated with that subtracter means.