Data Transmission and Reception in Spatial Modulation MIMO Wireless Systems and Analysis in Nakagami-m Fading Channels

This research paper provides binary data transmission in spatial modulation (SM) multiple input multiple output (MIMO) wireless systems, its reception in Nakagami-m fading channel and its analysis by pairwise error probability. In spatial modulation MIMO systems data is transmitted through the selected antenna via its index where data bits are sent via Nakagami-m fading channel whenever there is large cluster of multipath waves and large delay period. In the receiver data bits are detected using optimal detection or suboptimal detection from the corresponding antenna index where data bits are separately detected or simultaneously detected. Simulations are performed in matrix laboratory (MATLAB) for different values of modulation order M, number of transmitting antennas Nt, number of receiving antennas Nr and shape parameter m or the fading parameter. Results obtained for simulation of spatial modulation MIMO system shows that the performance in terms of pairwise error probability degrades as the order of modulation increases. However, the fact is that in spatial modulation MIMO system since antenna index is selected for transmission, the number of radio frequency (RF) chain decreases which results in reducing hardware complexity. The obtained results can be useful for research perspective for 5G and 6G wireless systems to cater the requirements of data transmission and reception.