北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2006, Vol. 29 ›› Issue (6): 94-97.doi: 10.13190/jbupt.200606.94.chilg

• 研究报告 • 上一篇    下一篇

基于V-BLAST OFDM系统的天线选择算法

池连刚 , 武妍艳 , 张欣, 杨大成   

  1. 北京邮电大学 电信工程学院,北京 100876
  • 收稿日期:2005-11-10 修回日期:1900-01-01 出版日期:2006-12-30 发布日期:2006-12-30
  • 通讯作者: 池连刚

An Antenna Selection Algorithm Based on V-BLAST OFDM Systems

CHI Lian-gang , WU Yan-yan , ZHANG Xin, YANG Da-cheng   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2005-11-10 Revised:1900-01-01 Online:2006-12-30 Published:2006-12-30
  • Contact: CHI Lian-gang

摘要:

研究了天线选择,提出了一种基于垂直-贝尔实验室分层空时结构(V-BLAST)与正交频分复用(OFDM)相结合的系统的发送天线选择算法,使选用的发送天线组合,对所有子载波的最小信号噪声干扰比(SNIR)最大化,以较好地解决V-BLAST系统检测要求信道的无线环境中有丰富的散射体,否则会严重恶化系统误比特率性能的问题。理论分析和仿真试验证明,应用该算法明显改善了系统的误比特率性能。

关键词: 垂直-贝尔实验室分层空时结构, 正交频分复用, 多输入多输出, 天线选择

Abstract:

In vertical-Bell laboratory layered space-time (V-BLAST) systems, the detection of received signal needs rich scattering channel environment, otherwise the system bit error rate (BER) performance descends seriously. A transmit antenna selection algorithm based on V-BLAST orthogonal frequency division multiplexing (OFDM) systems is proposed to solve this problem in this paper. This algorithm selects the transmit antenna subset that will maximize the minimum signal-to-noise-plus-interference ratio (SNIR) on each sub-carrier. Theoretical analysis and computer simulation results show that the system BER performance is significantly improved by this algorithm.

Key words: vertical-Bell laboratory layered space-time, orthogonal frequency division multiplexing, multiple-input multiple-output, antenna selection

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