基于块对角化的最小均方误差矢量预编码

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (10): 1410-1414.

• 无线电电子学、电信技术 • 上一篇下一篇

基于块对角化的最小均方误差矢量预编码

耿烜1，孙作雷1，刘锋1，何迪2

(1. 上海海事大学信息工程学院，上海 201306； 2. 上海交通大学电子工程系，上海 200240)

收稿日期:2013-10-13 出版日期:2014-10-28 发布日期:2014-10-28
基金资助:
国家自然科学基金（61271283，61401270）,上海市教委科研创新项目（14YZ113）,上海海事大学校基金（20130460，20130479）

Minimum Mean Square Error Vector Precoding Based on Block Diagonalization

GENG Xuan1，SUN Zuolei1，LIU Feng1，HE Di2

(1. College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China;2. Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China)

Received:2013-10-13 Online:2014-10-28 Published:2014-10-28

摘要/Abstract

摘要：

摘要：针对多用户多输入多输出下行链路系统的预编码问题，提出使用块对角化处理获得具有块对角化结构的等价信道矩阵，并基于等价信道推导收发信号的均方误差，通过最小化均方误差分别求解扰动矢量的两个部分，即扩展星座图的扰动矢量和残余干扰矢量，从而获得发射端信号和预编码矩阵.仿真表明，提出方法的误码率性能优于传统的对角化算法、块对角化迫零准则矢量预编码算法、正则块对角化预编码算法及其改进算法.

关键词: , 块对角化, 最小均方误差, 矢量预编码, 扰动矢量

Abstract:

For the precoding problem of multi-user multiple input multiple output (MIMO) downlink system, an effective channel having a block diagonal structure by use of block diagonalization (BD) method was proposed. Based on this effective channel, the mean square error (MSE) of transceiver signals was minimized, such that the two parts of perturbation vector, i.e. the perturbation vector expanding constellation and residual interference vector, were derived and thus the total transmit signals and precoding matrix were obtained. The simulation results show that the proposed method outperforms the conventional zeroforcing (ZF) BD method, the zeroforcing BD vector precoding （VP）, as well as the regularized block diagonalization and its improved methods.

Key words: block diagonalization (BD), minimum mean square error, vector precoding (VP), perturbation vector

中图分类号:

TN 911.72

耿烜1，孙作雷1，刘锋1，何迪2. 基于块对角化的最小均方误差矢量预编码[J]. 上海交通大学学报（自然版）, 2014, 48(10): 1410-1414.

GENG Xuan1，SUN Zuolei1，LIU Feng1，HE Di2. Minimum Mean Square Error Vector Precoding Based on Block Diagonalization[J]. Journal of Shanghai Jiaotong University, 2014, 48(10): 1410-1414.

参考文献

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［14］Park J Y, Lee B, Shim B. A MMSE vector precoding with block diagonalization for multiuser MIMO downlink［J］. IEEE Trans Wireless Communication, 2012, 60(2): 569577.第48卷第10期2014年10月上海交通大学学报JOURNAL OF SHANGHAI JIAO TONG UNIVERSITYVol.48 No.10Oct. 2014

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基于块对角化的最小均方误差矢量预编码

Minimum Mean Square Error Vector Precoding Based on Block Diagonalization

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