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论文类型： 期刊论文

发表时间： 2017-01-26

发表刊物： IET COMMUNICATIONS

收录刊物： SCIE、EI、Scopus

卷号： 11

期号： 2

页面范围： 249-257

ISSN号： 1751-8628

关键字： space-time block codes; phase shift keying; phase coding; orthogonal codes; trellis coded modulation; spectral efficiency; super-orthogonal space-time trellis code; STBC-SM; M-ary phase shift keying; space-time block coded spatial modulation; modified codeword design

摘要： 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.