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SubCarrier Index - QAM, A New Hybrid Modulation Scheme for OFDM

Mohammad Irfan, Oka Danil Saputra, Soo Young Shin
2015 The Proceedings of the 2nd International Conference on Industrial Application Engineering 2015   unpublished

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In this paper, we present a new hybrid modulation scheme based on quadrature amplitude modulation (QAM) and the idea behind frequency shift keying (FSK) for multicarrier systems. The proposed scheme is a request based modulation scheme where the QAM modulated message signal bits are encoded to different subcarriers based on the message signal bits. This way the subcarrier index also carries some message signal bits without its physical transmission. Perfect utilization of all subcarriers is
more » ... med. The proposed scheme shows considerable improvement in spectral efficiency.
doi:10.12792/iciae2015.017 fatcat:uznraongrnhy7khgztuyw5ukei
Citation

Mohammad Irfan, Oka Danil Saputra, Soo Young Shin. "SubCarrier Index - QAM, A New Hybrid Modulation Scheme for OFDM." The Proceedings of the 2nd International Conference on Industrial Application Engineering 2015 (2015)