Performance Analysis of OFDM-IM Systems over Generalized $\kappa-\mu$ and $\eta-\mu$ Fading Channels

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.