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Performance Study of MIMO Transmissions with Joint Channel Allocation and Relay Assignment

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Abstract

Multiple-input multiple-output (MIMO) techniques have shown numerous benefits in improving communication reliability and spectrum efficiency in wireless communication. In this paper, performance of MIMO transmission schemes with joint channel allocation and relay assignment (JCARA) in MIMO cooperative cognitive radio network (CRN) is studied. The problem of maximizing the spectrum efficiency among multiple CR source–destination pairs under different number of antenna configurations is studied. In order to improve the spectrum efficiency, multiple antennas are exploited at cognitive radio (CR) sources, CR relays, and CR destinations in a cooperative CRN . In this concern, we obtain the spectrum efficiency for various settings of MIMO maximum ratio transmission (MIMO-MRT) and MIMO transmit antenna selection (MIMO-TAS) schemes, which are applied at CR transmitter (i.e., CR sourc/relay) and maximum ratio combining (MRC) is applied at CR receivers (i.e., CR relay/destination), with JCARA. Extensive numerical results are presented to show the effectiveness of the MIMO-MRT and MIMO-TAS schemes. It is also shown that as the number of transmit–receive antenna increases the spectrum efficiency of both the MIMO-MRT and MIMO-TAS schemes increases as compared to single transmit–receive antenna case. Moreover, it is shown that relay assignment offers more benefit of maximization of minimum transmission rate with the MIMO-TAS scheme than the MIMO-MRT scheme.

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Authors and Affiliations

  1. Department of Information and Communication Technology, ABV-Indian Institute of Information Technology and Management, Gwalior, 474015, India

    Sadhana Mishra & Aditya Trivedi

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  1. Sadhana Mishra
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  2. Aditya Trivedi
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Correspondence to Sadhana Mishra.

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Mishra, S., Trivedi, A. Performance Study of MIMO Transmissions with Joint Channel Allocation and Relay Assignment. Wireless Pers Commun 96, 2651–2665 (2017). https://doi.org/10.1007/s11277-017-4317-x

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  • DOI: https://doi.org/10.1007/s11277-017-4317-x

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