Measured Throughput in Adaptive V-Blast Systems with Limited Feedback

Measured channel data are used to analyze the throughput of V-BLAST systems with transmit selection based on limited feedback from the receiver. The achievable throughput is found to be very dependent on the channel conditions in particular its spatial diversity, which may vary significantly with location indicating the need for adaptivity. The rate at which the subsets must be updated is also investigated and related to the differing channel conditions