Space-time receiver structure for digital communication systems

摘要

A diversity hybrid receiver structure is provided for estimating the sequence of transmitted symbols in a digital communication system. A joint optimizer determines optimal effective channel coefficients for use by an equalizer using a power method, and determines optimal filter coefficients for use by a space-time filter. The space-time filter mitigates co-channel interference and produces an intermediate sequence of signal samples. The equalizer acts on the intermediate sequence of signal samples and corrects for intersymbol interference to estimate the transmitted sequence of symbols. The equalizer uses an efficient block decision-feedback sequence estimation method. An interference detection scheme is also provided.