高技术通讯(英文版)
高技術通訊(英文版)
고기술통신(영문판)
HIGH TECHNOLOGY LETTERS
2004年
4期
19-23
,共5页
陈钟麟%Zhu Guangxi
陳鐘麟%Zhu Guangxi
진종린%Zhu Guangxi
space-time code%differential modulation%amicable orthogonal design%maximum-likelihood detection
The authors propose an amicable-orthogonal-design-based differential space-time block code (ADSTBC) for multiple antennas. Compared with the existing differential modulation designs, their scheme imposes no restrictions on underlying signal constellation, and therefore can improve the spectral efficiency by exploiting efficient modulation techniques such as QAM and APSK. They then derive a non-coherent maximum-likelihood decoder (MLD) for flat Rayleigh fading channels. The amicable orthogonal property of data matrices assures that MLD has very low bit error rate and linear decoding complexity. Particularly, in two special cases of ADSTBC, the simplified MLDs which can greatly reduce the implementation cost are derived.
