Title :
A Simplified Soft-Output QRD-M MIMO Detector
Author :
Jian, Haifang ; Yi, Yong ; Shi, Yin
Author_Institution :
Inst. of Semicond., Chinese Acad. of Sci., Beijing, China
Abstract :
In this paper, a low-complexity soft-output QRD-M detection algorithm is proposed for high-throughput multiple-input multiple-output (MIMO) systems. By employing novel expansion on demand and distributed sorting scheme, the proposed algorithm can reduce 70% and 85% foundational operations for 16-QAM and 64-QAM respectively compared to the conventional QRD-M algorithm. Furthermore, the proposed algorithm can yield soft information to improve the bit error rate (BER) performance. Simulation results show that the proposed algorithm can achieve a near-ML detection performance with less foundational operations.
Keywords :
MIMO communication; computational complexity; error statistics; maximum likelihood detection; quadrature amplitude modulation; 16-QAM; 64-QAM; BER performance; bit error rate; distributed sorting scheme; multiple-input multiple-output systems; near-ML detection; quadrature amplitude modulation; soft-output QRD-M MIMO detector; AWGN; Bit error rate; Detection algorithms; Detectors; Forward error correction; MIMO; Maximum likelihood decoding; Maximum likelihood detection; Quadrature amplitude modulation; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5303666
