This study addresses the achievable rate of single cell and sum rate of multi-cell orthogonal frequency division multiplexing (ofdm) indexmodulation (IM). The single-cell achievable rate of ofdm-IM with Gaussian inpu...
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This study addresses the achievable rate of single cell and sum rate of multi-cell orthogonal frequency division multiplexing (ofdm) indexmodulation (IM). The single-cell achievable rate of ofdm-IM with Gaussian input is calculated using a multi-ary symmetric channel. Then, the cumulative distribution function of multi-cell ofdm-IM is investigated by stochastic geometry. Furthermore, it is proved in this study that the probability density function of noise plus inter-cell interference in multicell ofdm-IM with quadrature-amplitude modulation follows a mixture of Gaussians (MoGs) distribution. Next, parameters of the MoG distribution are estimated using a simplified expectation maximisation algorithm. Upper bound of sum rates of multi-cell ofdm-IM is derived. Furthermore, analytic and simulated results are compared and discussed.
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