上海交通大学学报

上海交通大学学报（自然版）

• 无线电电子学、电信技术 • 上一篇    下一篇

正交波束成形空分多址系统中下行信息-干扰比分布

陈磊1，罗汉文1，刘仁茂2   

  1. （1.上海交通大学 电子工程系， 上海 200240； 2.夏普电子(上海)有限公司高科技研发中心， 上海 201203）
  • 收稿日期:2009-02-28 修回日期:1900-01-01 出版日期:2010-02-26 发布日期:2010-02-26

Downlink SINR Distribution of Orthogonal BeamForming Space Division Multiple Access System

CHEN Lei1,LUO Hanwen1,LIU Renmao2   

  1. (1.Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China； 2.Advanced Research & Development Center, Sharp Electronics Co., Ltd., Shanghai 201203, China)
  • Received:2009-02-28 Revised:1900-01-01 Online:2010-02-26 Published:2010-02-26

摘要： 为了精确分析基于有限反馈的空分多址系统中矢量量化的性能，考虑码字之间的正交性，运用概率论的方法给出了信道方向信息矢量量化误差分布的数学表达式.同时得到了正交波束成形空分多址系统中下行信号干扰比的分布.数值仿真结果表明，理论分析结果与实际情况相吻合.

关键词: 空分多址, 正交波束成形, 矢量量化, 有限反馈

Abstract: This paper analyzed the performance of vector quantization with codebook comprised of multiple sets of orthogonal vectors in space division multiple access(SDMA) systems with limited feedback. Using probability theory, mathematical expressions for the channel direction information (CDI) vector quantization error distribution were derived considering the orthogonality of codewords. Then the downlink SINR distribution of orthogonal beamforming SDMA systems was obtained. The numerical results show that the analytical deduction is coincident with the actual facts.

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