Open AccessPhase rotation‐based precoding for spatial modulation systems
Author(s) -
Yang Ping,
Xiao Yue,
Zhang Bo,
ElHajjar Mohammed,
Li Shaoqian,
Hanzo Lajos
Publication year - 2015
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2014.1065
Subject(s) - precoding , modulation (music) , spatial modulation , computer science , phase (matter) , rotation (mathematics) , zero forcing precoding , mathematics , telecommunications , artificial intelligence , physics , mimo , acoustics , channel (broadcasting) , quantum mechanics
In this study, the authors investigate the benefits of phase‐rotation‐assisted precoding (PRP) technique in spatial modulation (SM) systems, which are based on maximum free distance d min . First, a closed‐form solution of the maximum‐ d min PRP matrix is derived for the scenario of having two transmit antennas ( N t = 2). Moreover, two numerical methods are proposed for dealing with the case of N t > 2. The complexity of the proposed algorithms is presented. The authors simulation results show that the proposed PRP algorithms provide beneficial bit error ratio performance improvements compared with both the conventional SM and with the existing adaptive SM.