A SIMPLIFIED QRD-M SIGNAL DETECTION ALGORITHM FOR MIMO-OFDM SYSTEMS

QR Decompositon with an M-algorithm （QRD-M） has good performance with low complexity, which is considered as a promising technique in Multiple-Input Multiple-Output （MIMO） detections. This paper presented a simplified QRD-M algorithm for MIMO Orthogonal Frequency Division Multiplexing （MIMO-OFDM） sy...

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Veröffentlicht in:	Journal of electronics (China) Jg. 27; H. 1; S. 88 - 93
Hauptverfasser:	Jian, Haifang, Yao, Xiaocheng, Shi, Yin
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Heidelberg SP Science Press 2010 Institute of semiconductors Chinese Academy of Sciences,P. O. Box 912,Beijing 100083,China
Schlagworte:	Electrical Engineering Engineering QR Decompositon with an Multiple-Input Multiple-Output (MIMO) ) TN47 algorithm (QRD Detection Orthogonal Frequency Division Multiplexing (OFDM) QR Decompositon with an M-algorithm (QRD-M)
ISSN:	0217-9822, 1993-0615
Online-Zugang:	Volltext
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Zusammenfassung:	QR Decompositon with an M-algorithm （QRD-M） has good performance with low complexity, which is considered as a promising technique in Multiple-Input Multiple-Output （MIMO） detections. This paper presented a simplified QRD-M algorithm for MIMO Orthogonal Frequency Division Multiplexing （MIMO-OFDM） systems. In the proposed scheme, each surviving path is expanded only to partial branches in order to carry out a limited tree search. The nodes are expanded on demand and sorted in a distributed manner, based on the novel expansion scheme which can pre-determine the children＇s ascending order by their local distances. Consequently, the proposed scheme can significantly decrease the complexity compared with conventional QRD-M algorithm. Hence, it is especially attractive to VLSI implementation of the high-throughput MIMO-OFDM systems. Simulation results prove that the proposed scheme can achieve a performance very close to the conventional QRD-M algorithm.
Bibliographie:	11-2003/TN Orthogonal Frequency Division Multiplexing （OFDM） Multiple-Input Multiple-Output （MIMO） QR Decompositon with an M-algorithm （QRD-M） TN47 Detection Multiple-Input Multiple-Output （MIMO）; Orthogonal Frequency Division Multiplexing （OFDM）; QR Decompositon with an M-algorithm （QRD-M）; Detection
ISSN:	0217-9822 1993-0615
DOI:	10.1007/s11767-008-0151-3