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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Bibliographic Details
Published in:Journal of electronics (China) Vol. 27; no. 1; pp. 88 - 93
Main Authors: Jian, Haifang, Yao, Xiaocheng, Shi, Yin
Format: Journal Article
Language:English
Published: Heidelberg SP Science Press 2010
Institute of semiconductors Chinese Academy of Sciences,P. O. Box 912,Beijing 100083,China
Subjects:
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 Access:Get full text
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Description
Summary: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.
Bibliography: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