Open AccessModified codewords design for space–time block coded spatial modulation
Author(s) -
Hua Yuhao,
Zhao Guannan,
Zhao Wenjing,
Jin Minglu
Publication year - 2017
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.2016.0122
Subject(s) - space–time block code , block code , algorithm , modulation (music) , code word , spatial modulation , computer science , mathematics , trellis modulation , code (set theory) , trellis (graph) , theoretical computer science , decoding methods , telecommunications , fading , mimo , physics , channel (broadcasting) , set (abstract data type) , acoustics , programming language
Two kinds of modified codewords for space–time block coded spatial modulation (STBC‐SM) are presented in this study. The first modified codeword introduces a concept of flexible coefficients into the M ‐ary phase shift keying STBC‐SM. A method is proposed to obtain the optimal flexible coefficients. Moreover, the first modified codewords can also be applied to the systems developed from the STBC‐SM. In the second provided codewords, super‐orthogonal space–time trellis codes are applied in STBC‐SM. Therefore, a higher spectral efficiency is obtained compared with the original STBC‐SM. Finally, the simulation results and theoretical analysis demonstrate these performance advantages of the two kinds of modified codewords for STBC‐SM.