Generalized Spatial Modulation Based on Quaternary Quasi-Orthogonal Sequences

Yulong SHANG  Hojun KIM  Hosung PARK  Taejin JUNG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E101-A   No.3   pp.640-643
Publication Date: 2018/03/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E101.A.640
Type of Manuscript: LETTER
Category: Communication Theory and Signals
spatial modulation,  generalized spatial modulation,  MIMO,  quaternary quasi-orthogonal sequences,  pair-wise error probability,  

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The conventional generalized spatial modulation (GSM) simultaneously activates multiple transmit antennas in order to improve the spectral efficiency of the original SM. In this letter, to lessen the hardware burden of the multiple RF chains, we provide a new scheme that is designed by combining the GSM scheme using only two active antennas with quaternary quasi-orthogonal sequences of a length of two. Compared with the other SM schemes, the proposed scheme has significant benefits in average error performances and/or their hardware complexities of the RF systems.