Abstract
This paper investigates two efficient relay selection algorithms on the performance of an IEEE 802.16j MMR WiMAX network. The relay selection algorithms considered here are max-min relay selection and harmonic mean of SNR relay selection. The WiMAX transmitter comprises of OFDMA transmission technique and the receiver with maximum likelihood (ML) detection method is adopted for reliable detection of transmitted bits. The relays used here are the Amplify-Forward (AF) relay and Decode-Forward (DF) relay. Both selection combining (SC) and maximal ratio combining (MRC) techniques are applied and the performance metrics are symbol error rate (SER) and channel capacity. The analysis of the network is performed using the MATLAB software. It is observed that the DF relay along with MRC combination technique outperforms the other relay-diversity combining techniques in terms of providing improved SER and channel capacity. Again in providing less SER, the harmonic mean of SNR relay selection algorithm is superior in comparison to max-min relay selection algorithm. Further, the max-min based relay selection algorithm provides better channel capacity about the harmonic mean of SNR relay selection algorithm for the considered MMR WiMAX network.
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Swain, C.M.K., Das, S. (2018). Study and Impact of Relay Selection Schemes on Performance of an IEEE 802.16j Mobile Multihop Relay (MMR) WiMAX Network. In: Sa, P., Sahoo, M., Murugappan, M., Wu, Y., Majhi, B. (eds) Progress in Intelligent Computing Techniques: Theory, Practice, and Applications. Advances in Intelligent Systems and Computing, vol 719. Springer, Singapore. https://doi.org/10.1007/978-981-10-3376-6_53
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DOI: https://doi.org/10.1007/978-981-10-3376-6_53
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