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Star-QAM signaling constellations for spatial modulation

Yang, Ping, Xiao, Yue, Zhang, Bo, Li, Shaoqian, El-Hajjar, Mohammed and Hanzo, L. (2014) Star-QAM signaling constellations for spatial modulation IEEE Transactions on Vehicular Technology, PP, (99)

Record type: Article


The performance of spatial modulation (SM) assisted multiple-input multiple-output (MIMO) communication systems is highly dependent on the spe- cific amplitude/phase modulation (APM) signal con- stellation adopted. In this paper, we conceive new star- quadrature amplitude modulation (star-QAM) aid- ed spatial modulation (SM) schemes. Our goal is to minimize the system’s average bit error probability (ABEP). More specifically, a new class of star-QAM constellations is introduced for SM, which is capable of flexibly adapting ring ratios of the amplitude levels. Then, under a specific MIMO configuration and a predetermined transmission rate, a simple and efficient ring-ratio optimization algorithm is proposed for the sake of minimizing the ABEP. Moreover, in order to further improve the performance of our star-QAM aid- ed SM scheme, a diagonal precoding technique is pro- posed and a low-complexity minimum-distance based approach is conceived for extracting the precoding parameters. Our numerical results show that the pro- posed star-QAM aided SM arrangement provides ben- eficial system performance improvements compared to the identical-throughput maximum-minimum-distance (MMD) QAM and PSK benchmarkers. Moreover, our precoding scheme is capable of further improving the attainable system performance at a modest feedback requirement.

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Accepted/In Press date: 6 March 2014
Organisations: Southampton Wireless Group


Local EPrints ID: 362861
ISSN: 0018-9545
PURE UUID: 04e386ff-5f1c-4567-841c-364406eebede
ORCID for Mohammed El-Hajjar: ORCID iD

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Date deposited: 12 Mar 2014 17:22
Last modified: 01 Oct 2017 00:01

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Author: Ping Yang
Author: Yue Xiao
Author: Bo Zhang
Author: Shaoqian Li
Author: Mohammed El-Hajjar ORCID iD
Author: L. Hanzo

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