Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (5): 1-7.doi: 10.1016/S1005-8885(08)60260-5

• Wireless •    下一篇

Diversity order of decode-and-forward MIMO relaying
with transmit antenna selection

曹磊;杨鸿文;张欣;杨大成   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2009-02-10 修回日期:1900-01-01 出版日期:2009-10-30
  • 通讯作者: 曹磊

Diversity order of decode-and-forward MIMO relaying
with transmit antenna selection

CAO Lei ;YANG Hong-wen;ZHANG Xin;YANG Da-cheng   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2009-02-10 Revised:1900-01-01 Online:2009-10-30
  • Contact: CAO Lei

摘要:

This article analyzes the diversity order of several proposed schemes, where the transmit antenna selection (TAS) strategies are combined with low-complexity decode-and-forward (DF) protocols in the multiple-input multiple-output (MIMO) relaying scenario. Although antenna selection is a suboptimal form of beamforming, it enjoys the advantages of tractable optimization and low feedback overhead. Specifically, this article proposes schemes that combine TAS strategies with fixed decode-and-forward (FDF) and selection decode-and-forward (SDF) protocols. Following that, the asymptotic expressions of outage probabilities are derived and the diversity order of the proposed schemes analyzed. These kinds of combination of transmit antenna selection strategies and low-complexity decode-and-forward protocols can achieve partial diversity order in the MIMO relaying scenario. The numerical simulations verify the analysis.

关键词:

transmit;antenna;selection,;decode-and-forward,;MIMO;relaying,;outage;probability,;diversity;order

Abstract:

This article analyzes the diversity order of several proposed schemes, where the transmit antenna selection (TAS) strategies are combined with low-complexity decode-and-forward (DF) protocols in the multiple-input multiple-output (MIMO) relaying scenario. Although antenna selection is a suboptimal form of beamforming, it enjoys the advantages of tractable optimization and low feedback overhead. Specifically, this article proposes schemes that combine TAS strategies with fixed decode-and-forward (FDF) and selection decode-and-forward (SDF) protocols. Following that, the asymptotic expressions of outage probabilities are derived and the diversity order of the proposed schemes analyzed. These kinds of combination of transmit antenna selection strategies and low-complexity decode-and-forward protocols can achieve partial diversity order in the MIMO relaying scenario. The numerical simulations verify the analysis.

Key words:

transmit antenna selection;decode-and-forward;MIMO relaying;outage probability;diversity order