Abstract
This study introduces an enhanced index modulation scheme called repeated inphase (I) and quadrature (Q) index modulation-OFDM (ReIQ). This system uses activated subcarriers in each I and Q component to transmits the same data symbol. By doing so, ReIQ can attain improvement in both spectral efficiency and transmission reliability. The advanced detector, called as greedy detection (GD) for ReIQ is proposed to provide optimal reliability of the maximum likelihood (ML) detector and considerably decrease the computational complexity. Simulation results are introduced to demonstrate the superiority of ReIQ as well as low-complexity detector compared to benchmark systems even when the estimated channel errors appear at receivers.
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Nguyen, T.T. (2022). Greedy Detection for ReIQ System. In: Anh, N.L., Koh, SJ., Nguyen, T.D.L., Lloret, J., Nguyen, T.T. (eds) Intelligent Systems and Networks. Lecture Notes in Networks and Systems, vol 471. Springer, Singapore. https://doi.org/10.1007/978-981-19-3394-3_61
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DOI: https://doi.org/10.1007/978-981-19-3394-3_61
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