LTE-A系统协作多点传输联合处理预编码方法  

Joint processing precoding algorithm for coordinated muti-point transmission in LTE-A system

作　　者：张艳秋 张薇[1] 肖燕燕[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2013年第3期31-34,共4页Applied Science and Technology

摘　　要：针对目前多用户协作多点传输(MU-CoMP)中常用的预编码算法、迫零(ZF)算法和块对角化(BD)算法中同一用户的各子信道的等效信道增益不同,导致系统整体误码率较高这一现象,提出将块对角化几何均值分解的模代数(BD-GMD-THP)预编码算法应用于MU-CoMP系统.此方法可实现系统每用户内各子信道增益一致,均衡了用户内各子信道的误码率性能.仿真结果表明,该算法可以有效降低系统总误码率,提高MU-CoMP系统性能,有一定的实用价值.Precoding,ZF and BD algorithms are currently commonly used in the multi-user CoMP transmission.All of them have different equivalent channel gains in every subchannel of the same user,which lead to a higher bit error rate for the entire system.This paper proposes to apply BD-GMD-THP to MU-CoMP system,so as to solve the above-mentioned problem.For the same user,the gains in all channels are kept consistent,which balance the bit error rate performance of all subchannels within the user.The simulation results demonstrate that the algorithm can effectively reduce the total bit error rate of the system,improve the performance of MU-CoMP and therefore,have certain practical value.

关 键 词：协作多点传输 预编码 迫零 块对角化 几何均值分解 

分 类 号：TN929.53[电子电信—通信与信息系统]