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

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^-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.