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    Analysis of Average Bit Error Rate for OFDM-IM Systems with Hardware Impairments over Nakagami-m and Weibull Fading Channels
    (Institute of Electrical and Electronics Engineers Inc., 2022) Ceniklioğlu, Büşra; Develi, İbrahim; Canbilen, Ayşe Elif; Lafci, Mustafa
    Orthogonal frequency division multiplexing together with index modulation (OFDM-IM) is a brilliant key alternative to the traditional orthogonal frequency division multiplexing (OFDM) schemes for future communication technologies whereby it has high spectral and energy efficiency. However, there are still key issues that need to be adressed to evaluate possible applications in practical systems. Accordingly, we investigate the performance of OFDM-IM systems over Nakagami-m and Weibull fading channels that suffer from transceiver hardware impairments (HWIs) in this paper. Specifically, a maximum likelihood (ML) detector is applied for OFDM-IM-based transmission and the system performance is analyzed under the effect of HWIs considering average bit error rate (ABER) by utilizing computer simulations. The obtained results show that the HWIs have serious destructive effects on the overall system performance. © 2022 IEEE.
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    Öğe
    Performance Analysis of OFDM-IM Systems over Generalized \eta-\mu Fading Channels
    (Institute of Electrical and Electronics Engineers Inc., 2022) Lafci, Mustafa; Ceniklioğlu, Büşra; Canbilen, Ayşe Elif; Develi, İbrahim
    In this paper, average bit error rate (ABER) performance of an orthogonal frequency division multiplexing with index modulation (OFDM-IM) system, which is a strong transmission technology candidate for next-generation networks, has been analyzed over generalized fading models, namely eta-mu (\eta-\mu) and kappa-mu (\kappa-\mu) fading channels. These models have the advantage of simple algebraic notation, line-of-sight (LOS) and non-line-of-sight (NLOS) propagation effects. The \kappa-\mu fading channel model is a LOS distribution, that includes the Nakagami-m and the Rice (Nakagami-n) distributions. Similarly, the special cases of \eta-\mu fading channel model are Hoyt, Rayleigh, Nakagami-m and One-sided Gaussian distributions. The effect of \eta-\mu and \kappa-\mu fading channel characteristics on the ABER performance of OFDM-1M systems was shown via computer simulations. © 2022 IEEE.