STBC and back propagation artificial neural network for improving the performance of orthogonal frequency division multiplexing with subcarrier power modulation

Orthogonal Frequency Division Multiplexing with Subcarrier-Power Modulation (OFDM-SPM) has recently been proposed as a promising, the OFDM-SPM technique is compounded with Alamouti space-time block coding (STBC) in a multiple-input-single-output (MISO) set up to study, investigate, and quantify the wireless system's performance of their combination over a multi-path Rayleigh fading channel. For making STBC work well with OFDM-SPM, a suitable equalizer is proposed for detecting the SPM power bits, and it is observed that there is a considerable improvement in the BER. It was found that the sub-carrier optimized power-reassignment scheme provides the best BER performance for the proposed transmission scheme.