ws 14(2): e3

Research Article

Cooperative MIMO Relaying with Orthogonal Space-Time Block Codes in Wireless Channels with and without Keyholes

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  • @ARTICLE{10.4108/ws.1.2.e3,
        author={Tian Zhang and Wei Chen and Wei Zhang and Zhigang  Cao},
        title={Cooperative MIMO Relaying with Orthogonal Space-Time Block Codes in Wireless Channels with and without Keyholes},
        journal={EAI Endorsed Transactions on Wireless Spectrum},
        volume={1},
        number={2},
        publisher={ICST},
        journal_a={WS},
        year={2014},
        month={7},
        keywords={MIMO relaying, DF-AF selection, outage probability, SEP, keyhole},
        doi={10.4108/ws.1.2.e3}
    }
    
  • Tian Zhang
    Wei Chen
    Wei Zhang
    Zhigang Cao
    Year: 2014
    Cooperative MIMO Relaying with Orthogonal Space-Time Block Codes in Wireless Channels with and without Keyholes
    WS
    ICST
    DOI: 10.4108/ws.1.2.e3
Tian Zhang1,*, Wei Chen2, Wei Zhang3, Zhigang Cao2
  • 1: School of Information Science and Engineering, Shandong University, Jinan 250100, China.
  • 2: State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology (TNList), Department of Electronic Engineering, Tsinghua University, Beijing 100084,China.
  • 3: School of Electrical Engineering and Telecommunications, The University of New SouthWales, Sydney, NSW2052, Australia
*Contact email: tianzhang.ee@gmail.com

Abstract

Cooperative multiple-input multiple-output (MIMO) relaying is investigated in the paper. We introduce DFAF selection MIMO relaying, where the relay equipped with multiple antennas can adaptively switch between decode-and-forward (DF) and amplify-and-forward (AF) according to its decoding state of the sourcemessage. We consider two wireless environment scenarios: 1)The scenario with traditional channels are considered firstly. We analyze the outage performance of DF-AF selection MIMO relaying, and a closed-form expression is derived. In addition, the diversity order is obtained based on the expression. For comparison purpose, we also obtain the closed-form outage probability and the diversity order for the AF MIMO relaying and the DF MIMO relaying. 2)We investigate the cooperative MIMO relaying in the presnece of keyholes secondly. We present performance analysis of orthogonal space-time block coded transmission for a cooperative MIMO relaying system with keyholes. For DF MIMO relaying, exact outage probability and symbol error probability (SEP) are obtained. Regarding AF MIMO relaying and DF-AF selection MIMO relaying, the lower and upper bounds are derived. In both traditional and keyhole scenarios, theoretical analysis which has been further verified through Monte-Carlo simulations demonstrate that the DF-AF selection MIMO relaying has better performance than the AF MIMO relaying and the DF MIMO relaying.