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发布时间：2019-03-12

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：Scopus、EI、SCIE

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.