A high performance low complexity joint transceiver for closed-loop MIMO applications

Abstract

An efficient and practicable MIMO transceiver in which transmitter antenna selection is applied to QR detector and GMD precoding through limited feedback channel is implemented. For over 4 × 5 antenna selection, the proposed antenna selection scheme can save more than 50% computational complexity compared with that of the exhausting method. From the simulation results, the proposed transceiver can achieve over 6 dB SNR improvement over the open-loop V-BLAST counterparts at BER=10{su−2| under i.i.d. channel. Finally, a MIMO joint transceiver hardware platform on a Xilinx FPGA is realized to verify the proposed algorithm and architecture.