ADVANCED SIGNAL PROCESSORS FOR INTERFERENCE CANCELLATION IN BASEBAND RECEIVERS

摘要

An interference canceller comprises a composite interference vector (CIV) generator configured to produce a CIV by combining soft and/or hard estimates of interference, an interference-cancelling operator configured for generating a soft projection operator, and a soft-projection canceller configured for performing a soft projection of the received baseband signal to output an interference-cancelled signal. Weights used in the soft-projection operator are selected to maximize a post-processing SINR.

主权项

1. A method for cancelling interference from a received baseband signal, the method comprising:
generating at least one composite interference vector (CIV) by combining estimates from interfering subchannels, wherein the estimates are derived from at least one of a Rake receiver, an equalizer, a receiver employing receive diversity, a receiver employing transmit diversity combining, or a receiver employing space-time decoding; generating a soft-projection matrix corresponding to the at least one CIV; and operating on the received baseband signal using the soft-projection matrix to output an interference-cancelled signal.