• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Subcarrier and Power Allocation for Multiuser MIMO-OFDM Systems with Various Detectors

Vol. 11, No.10, October 31, 2017
10.3837/tiis.2017.10.004, Download Paper (Free):

Abstract

Resource allocation plays a crucial role in multiuser multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) systems to improve overall system performance. While previously proposed resource allocation algorithms are mainly designed from the point of view of the information-theoretic, we formulate the resource allocation problem as an average bit error rate (BER) minimization problem subject to a total power constraint when considering employing realistic MIMO detection techniques. Subsequently, we derive the optimal subcarrier and power allocation algorithms for three types of well-known MIMO detectors, including the maximum likelihood (ML) detector, linear detectors, and successive interference cancellation (SIC) detectors. To reduce the complexity, we also propose a two-step suboptimal algorithm that separates subcarrier and power allocation for each detector. We also analyze the diversity gain of the proposed suboptimal algorithms for various MIMO detectors. Simulation results confirm that the proposed suboptimal algorithm for each detector can achieve a comparable performance with the optimal allocation with a much lower complexity. Moreover, it is shown that the suboptimal algorithms perform better than the conventional algorithms that are known in the literature.


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Cite this article

[IEEE Style]
Jing Mao, Chen Chen, Lin Bai, Haige Xiang and Jinho Choi, "Subcarrier and Power Allocation for Multiuser MIMO-OFDM Systems with Various Detectors," KSII Transactions on Internet and Information Systems, vol. 11, no. 10, pp. 4738-4758, 2017. DOI: 10.3837/tiis.2017.10.004

[ACM Style]
Mao, J., Chen, C., Bai, L., Xiang, H., and Choi, J. 2017. Subcarrier and Power Allocation for Multiuser MIMO-OFDM Systems with Various Detectors. KSII Transactions on Internet and Information Systems, 11, 10, (2017), 4738-4758. DOI: 10.3837/tiis.2017.10.004