CHANNEL ESTIMATOR FOR A PIPELINED INTERFERENCE CANCELLATION APPARATUS

摘要

A known pipeline interference cancellation apparatus comprises a plurality of channel estimators. The channel estimates produced are filtered in order to reduce the effects of noise. However, in order to avoid the loss of symbols from weaker users, further filtering is required. The present invention simplifies the above described filtering processes by providing channel estimate and means (516) for generating a signal indicative of the accuracy of the channel estimate. An adaptive channel estimation unit (520) is provided to adapt coefficients of the channel estimation means (500).