有限反馈MIMO下行系统中基于黄金码的传输方案与解码方法

doi:10.11959/j.issn.1000-0801.2018262

电信科学 ›› 2018, Vol. 34 ›› Issue (11): 31-40.doi: 10.11959/j.issn.1000-0801.2018262

有限反馈MIMO下行系统中基于黄金码的传输方案与解码方法

郑思思,王海泉,李国彬,戴谭明

杭州电子科技大学通信工程学院，浙江杭州 310018

修回日期:2018-09-28 出版日期:2018-11-01 发布日期:2018-12-06
作者简介:郑思思（1994-），女，杭州电子科技大学通信工程学院硕士生，主要研究方向为信号与信息处理。|王海泉（1964-），男，杭州电子科技大学通信工程学院教授、博士生导师，主要研究方向为无线通信、多天线系统、信号检测、信息论等。|李国彬（1994-），男，杭州电子科技大学通信工程学院硕士生，主要研究方向为信号与信息处理。|戴谭明（1993-），男，杭州电子科技大学通信工程学院硕士生，主要研究方向为信号与信息处理。
基金资助:
国家自然科学基金资助项目(61728105);国家自然科学基金资助项目(61372093)

Golden code based transmission schemes and decoding methods for MIMO downlink system with finite-bit feedback

Sisi ZHENG,Haiquan WANG,Guobin LI,Tanming DAI

School of Communication Engineering,Hangzhou Dianzi University,Hangzhou 310018,China

Revised:2018-09-28 Online:2018-11-01 Published:2018-12-06
Supported by:
The National Natural Science Foundation of China(61728105);The National Natural Science Foundation of China(61372093)

摘要/Abstract

摘要：

针对有限反馈多输入多输出下行系统，结合黄金码与预编码技术，提出一种新的预编码设计准则、码字选择方案及新的传输方案和相应的低复杂度解码方法。事实上，在充分利用黄金码能够克服信道深度衰落这一特性的基础上，对所选预编码码字进行重新构造，得到一个二重预编码矩阵，将其作为发送信号，从而能够实现线性解码。与此同时，针对传统的MIMO下行系统传输方案提出了ML和MMSE的联合解码方法，使其能通过一个门限值动态地调节解码复杂度。数值仿真结果证明了本文所提方案性能的优越性。

关键词: 多输入多输出系统, 预编码, 黄金码, 有限反馈

Abstract:

For a MIMO downlink system with finite-bit feedback,combined with the Golden code and the precoding technology,a new precoding design criterion and its related codeword selection method,transmissionschemes and corresponding low complexity decoding methods were proposed.In fact,based on fully utilizing the characteristics that the Golden code could overcome the channel depth fading,a double precoding matrix was constructed as transmission signals by using the selected precoding codeword,so that the decoding complexity could be reduced to linear.In the meantime,a joint ML and MMSE decoding method was proposed for the traditional transmission scheme,which could dynamically adjust the decoding complexity based on a threshold.The numerical simulation results confirm the superiority of the proposed schemes and methods.

Key words: MIMO system, precoding, Golden code, finite-bit feedback

中图分类号:

TN914

郑思思,王海泉,李国彬,戴谭明. 有限反馈MIMO下行系统中基于黄金码的传输方案与解码方法[J]. 电信科学, 2018, 34(11): 31-40.

Sisi ZHENG,Haiquan WANG,Guobin LI,Tanming DAI. Golden code based transmission schemes and decoding methods for MIMO downlink system with finite-bit feedback[J]. Telecommunications Science, 2018, 34(11): 31-40.

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传输方案	单个符号的解码复杂度
黄金码的解码方法	M⁴/4
方案1	M
方案2	M
r=2时传输方案	根据门限值Λ的调整而定

有限反馈MIMO下行系统中基于黄金码的传输方案与解码方法

Golden code based transmission schemes and decoding methods for MIMO downlink system with finite-bit feedback

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