Title :
Layer reduced K-best sphere decoding
Author :
Mao, Xinyu ; Ren, Shubo ; Xiang, Haige
Author_Institution :
Sch. Electr. Eng. & Comput. Sci., Peking Univ., Beijing, China
Abstract :
The detection of multiple-input multiple-output (MIMO) system is an important issue. The K-best sphere decoding (K-best SD) is a promising technology for the MIMO detection. But the complexity of the K-best SD is very high. In this article, a new algorithm is proposed to simply the complexity of the K-best SD. Through analyzing the statistics character of the channel matrix, we propose that the number of K can be reduced with the increasing of the detection layers. Simulation results show that with the price of slight performance drop the proposed algorithm can reduce the complexity of the K-best SD efficiently.
Keywords :
MIMO communication; decoding; matrix algebra; signal detection; K-best SD; MIMO system detection; channel matrix; complexity reduction; layer-reduced K-best sphere decoding; multiple-input multiple-output system; Antennas; Computational complexity; MIMO; Matrix decomposition; Maximum likelihood decoding; Vectors; K-best sphere decoding (K-best SD); Multiple-input multiple-output (MIMO) systems; sphere decoding (SD);
Conference_Titel :
Wireless Communications and Signal Processing (WCSP), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-1009-4
Electronic_ISBN :
978-1-4577-1008-7
DOI :
10.1109/WCSP.2011.6096712