多天线多用户认知系统中基于BD预编码的用户选择方法

计算机科学 ›› 2013, Vol. 40 ›› Issue (8): 93-95.

多天线多用户认知系统中基于BD预编码的用户选择方法

周湘贞,胡海波

郑州升达经贸管理学院信息工程系郑州451191;重庆大学软件学院重庆400045

出版日期:2018-11-16 发布日期:2018-11-16

Selection Methods Based on Block Diagonalization Precoding for Multiuser Multiantenna Cognitive Radio System

ZHOU Xiang-zhen and HU Hai-bo

Online:2018-11-16 Published:2018-11-16

摘要/Abstract

摘要： 在次用户配置的多天线的认知多天线协作反馈系统中,信道方向信息存在量化误差,现有的用户选择方法不能使次用户系统容量最大化,而且增大了对主用户系统的干扰。为了消除量化误差对主次用户系统的影响,提出了一种基于BD预编码的统计独立系数的用户选择方案。分析和仿真结果表明,所提方案在主用户系统干扰受限的条件下有效提升了次用户系统的容量。

关键词: 认知无线电,频谱共享,多输入多输出,广播信道

Abstract: In the users’multiple antenna cognitive multiple antenna cooperation feedback system,the channel direction information has quantization error,thus the existing user selection method will not be able to maximize the second user system capacity,and increase the primary user system interference．In order to eliminate the influence of the quantization error on the primary and secondary user system,this paper put forward a kind of statistical independent factor second users selection method based on the BD precoding．Analysis and simulation results show that the proposed scheme effectively enhances the second user system capacity in the primary user system interference limited conditions.

Key words: Cognitive radio,Spectrum share,MIMO,Broadcast channels

周湘贞,胡海波. 多天线多用户认知系统中基于BD预编码的用户选择方法[J]. 计算机科学, 2013, 40(8): 93-95. https://doi.org/

ZHOU Xiang-zhen and HU Hai-bo. Selection Methods Based on Block Diagonalization Precoding for Multiuser Multiantenna Cognitive Radio System[J]. Computer Science, 2013, 40(8): 93-95. https://doi.org/

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