中国邮电高校学报(英文)

• Wireless • 上一篇    下一篇

Toward favorable detection performance and low complexity by incorporating MIMO detection with ARQ

漆渊,钱荣荣   

  1. 北京邮电大学
  • 收稿日期:2010-05-17 修回日期:2011-03-31 出版日期:2011-06-30 发布日期:2011-06-13
  • 通讯作者: 漆渊 E-mail:qiyuan@bupt.edu.cn
  • 基金资助:

    国家自然科学基金项目;国家863计划;973计划

Toward favorable detection performance and low complexity by incorporating MIMO detection with ARQ

  • Received:2010-05-17 Revised:2011-03-31 Online:2011-06-30 Published:2011-06-13
  • Supported by:

    National Natural Science Foundation of China;National 863 Program; the 973 Project

摘要:

Although multiple-input-multiple-output (MIMO) detection has received much research attention in the past years, to the author’s knowledge, few detection methods demonstrate optimal/near-optimal performance with low complexity. This paper proposes to incorporate automatic retransmission request (ARQ) with sub-optimal MIMO detectors so as to achieve both favorable performance and low complexity. In the study, retransmission delay induced by ARQ is exploited as a source of improving the detection performance of low complexity algorithms. In particular, the detection performance of sub-optimal algorithms improved by introducing ARQ is analyzed theoretically. A sufficient condition for such scheme to achieve full-diversity performance is also derived which relates detection performance with number of transmission times. Moreover, throughput cost by retransmission is deduced as well as its lower bound. The zero-forcing (ZF) equalizer cooperating with ARQ, as a case study, is shown to have evident performance improvement through theoretical analysis. And numerical results are presented to verify the effectiveness of the proposed scheme which boosts the performance of sub-optimal detector and possesses lower implementation complexity for practical reality simultaneously.

关键词:

MIMO, ARQ, complexity, performance

Abstract:

Although multiple-input-multiple-output (MIMO) detection has received much research attention in the past years, to the author’s knowledge, few detection methods demonstrate optimal/near-optimal performance with low complexity. This paper proposes to incorporate automatic retransmission request (ARQ) with sub-optimal MIMO detectors so as to achieve both favorable performance and low complexity. In the study, retransmission delay induced by ARQ is exploited as a source of improving the detection performance of low complexity algorithms. In particular, the detection performance of sub-optimal algorithms improved by introducing ARQ is analyzed theoretically. A sufficient condition for such scheme to achieve full-diversity performance is also derived which relates detection performance with number of transmission times. Moreover, throughput cost by retransmission is deduced as well as its lower bound. The zero-forcing (ZF) equalizer cooperating with ARQ, as a case study, is shown to have evident performance improvement through theoretical analysis. And numerical results are presented to verify the effectiveness of the proposed scheme which boosts the performance of sub-optimal detector and possesses lower implementation complexity for practical reality simultaneously.

Key words:

MIMO, ARQ, complexity, performance