A Low Complexity Channel Estimation Approach of LTE Downlink System

摘要：

　　Channel estimation is critical to receiver performance in the long term evolution (LTE) system.Reference signals are interspersed with data signals among the subcarriers to aid channel estimation.Linear minimum mean square error (LMMSE) channel estimation is an efficient approach to estimate the knowledge of channel with high complexity.This paper proposed a channel estimation approach based on singular value decomposition (SVD) for downlink channel in LTE system.Compared to the conventional algorithm,the proposed approach investigates the channel autocorrelation matrix respectively and substitutes it by small submatrices to reduce the complexity.The simulation result demonstrates that the complexity is significantly reduced with negligible performance degradation,so it could be a candidate of the channel estimation algorithm for downlink channel estimation in LTE system.

关键词： LTE Channel Estimation LS LMMSE SVD

作者: SubinWang Chunjing Hu Tao Peng Wenbo Wang

作者单位: Wireless Signal Processing and Network Lab, Key laboratory of Universal Wireless Communication Ministry of Education, Beijing University of Posts & Telecommunications

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 192-196

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）