Capacity-based Spatial Modulation Constellation and Pre-scaling Design
Abstract
Spatial Modulation (SM) can utilize the index of the transmit antenna (TA) to transmit additional information. In this paper, to improve the performance of SM, a non-uniform constellation (NUC) and pre-scaling coefficients optimization design scheme is proposed. The bit-interleaved coded modulation (BICM) capacity calculation formula of SM system is firstly derived. The constellation and pre-scaling coefficients are optimized by maximizing the BICM capacity without channel state information (CSI) feedback. Optimization results are given for the multiple-input-single-output (MISO) system with Rayleigh channel. Simulation result shows the proposed scheme provides a meaningful performance gain compared to conventional SM system without CSI feedback. The proposed optimization design scheme can be a promising technology for future 6G to achieve high-efficiency.
Cite
@article{arxiv.2310.15565,
title = {Capacity-based Spatial Modulation Constellation and Pre-scaling Design},
author = {Xinghao Guo and Hanjiang Hong and Yin Xu and Yi-yan Wu and Dazhi He and Wenjun Zhang},
journal= {arXiv preprint arXiv:2310.15565},
year = {2023}
}
Comments
6 pages,conference