MIMO CDMA系统中一种新的循环空时分组编译码方法
doi: 10.3724/SP.J.1146.2005.00069
A Novel Cyclic STBC Encoding and Decoding Scheme In MIMO CDMA System
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摘要: 该文提出了MIMO CDMA系统中一种新的空时分组编译码方法，称为循环空时分组码(Cyclic Space-Time Block Code，C-STBC)，它是将输入信息进行分组循环编码，然后对循环编码后的码字通过不同的天线分别采用不同的扩频码扩频后发射出去。这种CDMA系统下的循环空时分组码对任意的发射天线数都能达到满编码速率和满分集度，且其译码与传统的空时分组码一样简单。仿真结果验证了这种循环空时分组码优于传统的空时分组码。Abstract: A novel space-time block encoding and decoding method in MIMO CDMA system is proposed in this paper. It is called Cyclic Space-Time Block Code (C-STBC). The input data stream is circularly encoded in block, and then the encoded data streams are transmitted through different antenna by multiplying different spread code respectively. The proposed C-STBC scheme in CDMA system can achieve full coding rate and full diversity gain but the decoding method is simple as the conventional STBC. Simulation results show that the proposed C-STBC is superior to the conventional STBC.
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