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Cooperative Transmission Distance in Multi-relay Communication Systems

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Abstract

In this paper, we present the cooperative transmission distance with multiple decode-and-forward relays in a communication system. The investigation of the transmission distance is focused on how to achieve its maximum by minimizing the average symbol-error-ratio (SER) at the receiver. Firstly, we provide a closed-form formulation of the average SER in a multi-relay system, in which a signal is modulated and demodulated with M-quadrature amplitude modulation and is broadcast by the source and relays through narrow-band Rayleigh fading channels. Secondly, taking asymptotically tight approximation, we optimize the power allocation between the source and relays to minimize the SER. Thirdly, we provide a general expression of the transmission distance with the SER. Finally, we discuss the cooperative transmission distance with different parameters.

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Authors and Affiliations

  1. Faculty of Information Technology, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau

    Manlin Fang, Jianqing Li & Kun Liu

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  1. Manlin Fang
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  2. Jianqing Li
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  3. Kun Liu
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Correspondence to Jianqing Li.

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Fang, M., Li, J. & Liu, K. Cooperative Transmission Distance in Multi-relay Communication Systems. Wireless Pers Commun 94, 1511–1522 (2017). https://doi.org/10.1007/s11277-016-3695-9

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  • DOI: https://doi.org/10.1007/s11277-016-3695-9

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