Method and system for processing multipath signals over a single user downlink MIMO channel using a hybrid equalizer/RAKE receiver

摘要

A mobile device comprises multiple receive antennas to receive spatially independent multipath signals from multiple transmit antennas located on a single base station. The mobile device concurrently generates a RAKE-based equivalent single path signal (RAKE ESPS) and an equalizer-based equivalent single path signal (equalizer ESPS) for the multipath signals received via each receive antenna. The generated RAKE ESPS or the generated equalizer ESPS is selected for channel decoding. Reference signal components are extracted from the multipath signals received to determine noise components, which is used to determine signal quality information of the generated RAKE ESPS and the generated equalizer ESPS. A final ESPS is selected from the generated RAKE ESPS and the generated equalizer ESPS based on the corresponding determined signal quality information. The selected final ESPS is diversity processed by combining signal components over the transmit/receive antennas. Transmission parameters are determined for channel decoding the combined signals.

主权项

1. A method for processing signals in a communication system, the method comprising:
in a mobile communication device comprising a plurality of receive antennas: receiving spatially independent multipath signals via said plurality of receive antennas from a plurality of transmit antennas located on a single base station; concurrently generating a RAKE-based equivalent single path signal and an equalizer-based equivalent single path signal for said spatially independent multipath signals received by each of said plurality of receive antennas; selecting one of said generated RAKE-based equivalent single path signal and said generated equalizer-based equivalent single path signal with respect to said each of said plurality of receive antennas for channel decoding; and despreading said selected RAKE-based equivalent single path signal or said selected equalizer-based equivalent single path signal.