Improved Sphere Decoding Algorithm in TD-LTE System

摘要：

In the MIMO-OFDM detection algorithm, the performance of sphere decoding most approach that of the Maximum Likelihood algorithm. However, the complexity of traditional sphere decoding algorithm is still relatively high. To solve the above difficult problems, some improvements are made based on the detail analysis of the principle of the sphere decoding algorithm. In this paper, a novel variable radius sphere decoding is proposed. We introduce a golden section search algorithm to accelerate the convergence rate of the original algorithm. Thus it greatly reduces the complexity of the algorithm. Compared with the traditional sphere decoding algorithm, the proposed algorithm can greatly reduce the complexity of the receiving decode testing process. Thus this algorithm is more suitable to the real-time requirements of the TD-LTE system.

关键词： TD-LTE system MIMO detection OFDM SD

作者: Weihong Fu Chunbao Zhao Wu Wei Qingliang Kong

作者单位: State Key Lab. Of Integrated Service Networks, Xidian University,Xian, Chinak Science and Technology on Information Transmission and Dissemination in Communication Networks Labor

会议类型: 国际会议

会议名称: 2011 IEEE 3rd International Conference on Communication Software and Networks(2011第三届通信软件与网络国际会议 ICCSN2011)

会议地点: 西安

会议语种:英文

页码: 514-517

在线出版日期: 2011-05-27（万方平台首次上网日期，不代表论文的发表时间）