Open AccessOn the coding advantages of the quasi‐orthogonal space–frequency block codes
Author(s) -
Shahabinejad Mostafa,
Morsali Alireza,
Talebi Siamak,
Shahabinejad Mohammad
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.2013.0049
Subject(s) - block code , computer science , coding (social sciences) , algorithm , block (permutation group theory) , mathematics , decoding methods , statistics , combinatorics
In this study, the authors show that the coding advantage (CA) of quasi‐orthogonal space–frequency block codes (QOSFBCs) could be decomposed into two parts, namely intrinsic CA (ICA) and extrinsic CA (ECA). Then, by using the ICA, the authors demonstrate that the optimum precoder of the QOSFBCs could be analytically derived without any requirement of the exhaustive search. Then, by improving the ECA, the authors enhance performances of the QOSFBCs efficiently – up to 4 dB. Finally, the authors show that a very fast optimisation process for the QOSFBCs is viable over any arbitrary frequency‐selective channel.