Distributed Precoding Technology of Reducing Inter-cell interference in LTE Downlink

摘要：

aim at the problem of the adjacent cell interference in LTE (long Term Evolution) system, a distributed pre-coding technology based on singular Value Decomposition (SVD) was presented, which need not to exchange user date between the cooperation base station, just need to know the channel state information (CSI) from the baste station to all users (include expected users and adjacent cell users). According to the CSI, The base station can get the pre-coding matrix based on EVO and implementing distributed precoding. Simulation results show that the presented distributed pre-coding method can reduce the inter cell interference and increase the spectral efficiency of users at the cell edge. At the same time, the computational complexity of the presented algorithm is lower than the BD-GMD algorithm and its error bit performance can improve 8dB relative to BD-GMD algorithm when date stream number is 1.

关键词： LTE(long Term Evolution) distributed precoding inter cell interference downlink

作者: Weihong FU Fan SHI Naian LIU

作者单位: State Key Lab. Of Intergrated Service Networks,Xidian University, Xian ,China Xian research institute,ZTE corporation,Xian,china

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: 369-372

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）