Spatial Modulation (SM), as a type of index modulation (IM), 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 is a general scheme that can be used as a reference and easily extended to more scenarios with various SM schemes, so it is a promising design paradigm for future wireless communication to achieve high-efficiency.


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    Title :

    Design of Capacity-Approaching Constellation and Pre-scaling for Spatial Modulation


    Contributors:
    Guo, Xinghao (author) / Xu, Yin (author) / Hong, Hanjiang (author) / Peng, Size (author) / He, Dazhi (author) / Zhang, Wenjun (author) / We, Yi-Yan (author)


    Publication date :

    2024-06-24


    Size :

    619879 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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