会议专题

Research on the Selection Algorithm of Precoding Matrix in TDD LTE

This paper presents an efficient method for calculating the Precoding Matrix Indicator (PMI) at a Long Term Evolution (LTE) User Equipment (UE).To solve problem of the high computational complexity in selection algorithm of precoding codebook for TDD LTE. A new selection algorithm based on singular value decomposition of channel matrix is presented. Our method reduces the computational complexity enormously by using the idea of channel average and maximizing effective power of transmitted signals. Then some simulations based on TDD-LTE downlink physical layer simulator are given. The simulations results show that the proposed algorithm greatly reduce the computational complexity compare to these two traditional algorithms while performance loss is very small, it is a good compromise of complexity and performance.

TDD-LTE Closed-loop MlMO Precoding matrix Throughput Singular value decomposition

Weihong Fu Fei Zhang Guo Yantao Zhiting Cui

State Key Lab. of Integrated Service Networks, Xidian University, Xian, China Science and Technology on Information Transmission and Dissemination in Communication Networks Labor

国际会议

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)

西安

英文

365-368

2011-05-27(万方平台首次上网日期,不代表论文的发表时间)