Performance Comparison of Spatial Channel Modulation with Two/Three-Dimensional Constellations
DOI:
https://doi.org/10.54097/pc8szb80Keywords:
Spatial channel modulation, 3D constellation, AI vector set A, BER performance.Abstract
In this paper, in view of merit of both the index modulation (IM) and the spatial channel modulation (CM), a new scheme, named as spatial channel modulation with multidimensional constellation (SCM-MDC), is designed to enhance the throughput and the reliability of communication systems. In the SCM-MDC, according to the employment of the signal constellations, it has two cases: Firstly, if modulating the QAM constellation, the antenna index (AI) vector set A and B are constructed by one active transmit antenna. Secondly, if modulating the 3D signal constellation, the AI vector set A and B are constructed by two and one active transmit antenna, respectively. Then, in order to be capable of enhancing the additional information, each transmit antenna is equipped with several radio frequency mirrors for carrying channel index information. Furthermore, the spectral efficiency and the bit error probability are provided. In the comparisons of the simulation results with the bit error rate (BER) performance, it can be seen that, the SCM-MDC achieves the better BER performance than the SM-MBM and QSM-MBM schemes.
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