Abstract
Orthogonal frequency division multiplexing with index modulation (OFDM-IM) has recently attracted numerous research interests, which enhances the spectral efficiency and the reliability of wireless communication by well transplanting the core idea of spatial modulation (SM) into the OFDM system such as the index of subcarrier. Due to that double spatial modulation (DSM) improves the spectral efficiency and the uncoded bit error rate (BER) as compared with SM, in this paper, a new design of OFDM with DSM (OFDM-DSM) is further investigated. Specifically, the design of the OFDM-DSM system is elaborately introduced. Based on the maximum-likelihood (ML) detector, the average bit error probability is presented. Finally, compared to conventional schemes such as OFDM, OFDM-IM, simulation results show that the OFDM-DSM system has better BER performance than other schemes over Rayleigh distribution and additive white Gaussian noise (AWGN) in wireless communication network.
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