In-Sequence Zeros-Ones Patterns Exploiting Approach for Spatial Modulation Performance Enhancement

This paper presents a proposed approach for enhancing both the spectral efficiency of spatial modulation and symbol error rate. The main idea is to exploiting repeated long zeros and ones sequences in the transmitted data, and mapping them into the signal constellation of Three Dimension (3-D) spatial constellation of spatial modulation. The obtained results indicate that the symbol error rate (SER) performance of the proposed algorithm is better as compared to traditional spatial modulation (SM), at a certain number of modulated-symbol selecting bits. The performance enhancement is affirmed by Monte Carlo simulations that show a significant improvement in SER in favor of the proposed approach compared to traditional SM. In addition, the proposed approach provides more improvement of SER performance, especially, when the number of receiving antennas is increased. Furthermore, it provides an improvement of spectral efficiency as compared to traditional spatial modulation.