Open AccessSoft‐output space‐time block coded spatial modulation
Author(s) -
Govender Rasigan,
Pillay Narushan,
Xu HongJun
Publication year - 2014
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.2014.0174
Subject(s) - space–time block code , spatial modulation , detector , block code , computer science , algorithm , transmission (telecommunications) , modulation (music) , block (permutation group theory) , monte carlo method , performance improvement , propagation of uncertainty , bit error rate , channel (broadcasting) , decoding methods , mimo , telecommunications , mathematics , statistics , physics , acoustics , geometry , operations management , economics
Space‐time block coded spatial modulation (STBC‐SM) is a recently proposed multiple‐input–multiple‐output transmission scheme, which combines spatial modulation (SM) and Alamouti's space‐time block code (STBC) in such a manner so as to retain the primary advantages of SM and STBC, while avoiding their drawbacks, resulting in an improved system error performance. In this study, the authors propose a soft‐output maximum‐likelihood (ML) detector (SOMLD) and a soft‐output low‐complexity near‐ML detector (SOLCD) for STBC‐SM transmission. Monte‐Carlo simulations demonstrate that the error performance of the proposed schemes are able to closely match that of the hard decision ML detector for uncoded channel conditions, while significant improvement in error performance is demonstrated for coded systems. Furthermore, compared with SOMLD, SOLCD imposes a significantly lower computational complexity, while achieving near‐ML error performance.