A Sphere Detection Based Adaptive MIMO Detection Algorithm for LTE-A System  

作　　者：Xuanli Wu Lukuan Sun Mingxin Luo 

机构地区：[1]1School of Electronics and Information Engineering Harbin Institute of Technology Harbin, China 2Department of Electrical and Computer Engineering McGill University Montreal, Canada [2]School of Electronics and Information Engineering Harbin Institute of Technology Harbin, China

出　　处：《Communications and Network》2013年第2期25-29,共5页通讯与网络（英文）

摘　　要：An adaptive MIMO detection algorithm for LTE-A system which is based on sphere detection is proposed in this paper. The proposed algorithm uses M-algorithm for reference to remove unreliable constellation candidates before search, and the number of constellation reservation is adaptively adjusted according to SNR. Simulations of LTE-A downlink show that the BER performance of the proposed detection algorithm is nearly the same as maximum likelihood (ML) detection algorithm. However, the complexity is reduced by about 30% compared with full constellation sphere detection.An adaptive MIMO detection algorithm for LTE-A system which is based on sphere detection is proposed in this paper. The proposed algorithm uses M-algorithm for reference to remove unreliable constellation candidates before search, and the number of constellation reservation is adaptively adjusted according to SNR. Simulations of LTE-A downlink show that the BER performance of the proposed detection algorithm is nearly the same as maximum likelihood (ML) detection algorithm. However, the complexity is reduced by about 30% compared with full constellation sphere detection.

关 键 词：ADAPTIVE MIMO DETECTION SPHERE DETECTION M-ALGORITHM LTE-A System 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]