A Full-Diversity Scheme for Four Transmit Antennas and Quantized Feedback Channel

In this paper we propose a spatial diversity scheme for four transmit antennas and quantized feedback channel systems. We present a preprocessor design that enables this scheme to achieve full diversity order as well as a coding advantage. A quantized feedback analysis of the proposed scheme for quasi-static flat Rayleigh fading channels is also performed. Through simulation results, we show that the proposed scheme has a performance improvement of about 1.6dB and 2dB over ACBS scheme for 3 and 4 feedback bits, respectively.