A receiver for use in a communication station of a CDMA system, and process for receipt of at least one of a plurality of channels via an air interface of CDMA

摘要

RECEPTOR FOR USE IN A STATE OF COMMUNICATION OF A SYSTEM OF CDMA, AND, PROCESS FOR RECEIVING THE LEAST ONE OF A PLURALITY OF CANALS WITHIN A CDMA AIR INTERFACE"Digital scattering spectrum communication system employing coherent multi-mycot demodulation assisted by pilots makes a substantial reduction in the overall and allocated pilot overheads. The systemand process uses a modulated download QPSK data signal so the modulated data are removed and the recovered carrier is used for phase estimation and channel amplitude. The resulting signal (119) has no data modulation and is used as a pseudo pilot signal (119). In conjunction with the pseudo-pilot signthe coupling of multiple phase-locked entries (157) is employed, further eliminating errors due to carrier displacement by using a plurality of pseudo-pilot signals. A pilot signal (135) is required to solve absolute phase ambivalence, but at a greatly reduced magnitude.