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Relay Selection Scheme Enhancing Reliability Based on MIMO-OFDM System

Yu-Jin Na, Won-Seok Lee, Jong-Gyu Ha, and Hyoung-Kyu Song
Department of Information and Communications Engineering, Sejong University, uT Communication Research Institute, Gunja-dong 98, Gwangjin-gu, Seoul 05006, Korea
Abstract—In this paper, a relay selection scheme is proposed in the Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system. The conventional relay selection schemes in the wireless cooperative communication system have high implementation complexity and overhead. The proposed scheme is an adaptive relay selection scheme using Singular Value Decomposition (SVD) to select a relay with channel coefficients that maximize channel capacity. Proposed scheme uses combining factor with singular value in order to combine received signal. Simulation result shows that the proposed scheme improves the Bit Error Rate (BER) performance, compared with the conventional schemes. The proposed scheme with combining factors has enhanced BER performance than the conventional schemes. 

Index Terms—MIMO-OFDM, relay selection, DF, SVD, channel capacity, combining factor

Cite: Yu-Jin Na, Won-Seok Lee, Jong-Gyu Ha, and Hyoung-Kyu Song, "Relay Selection Scheme Enhancing Reliability Based on MIMO-OFDM System," International Journal of Signal Processing Systems, Vol. 9, No. 1, pp. 7-10, March 2021. doi: 10.18178/ijsps.9.1.7-10

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