Multiple symbol differential stack algorithm for unitary space-frequency modulation

被引：0
|
作者：
Li, Ying [1 ]
Wang, Xin [1 ]
Wei, Jibo [1 ]
机构：
[1] Natl Univ Def Technol, Dept Elect Sci & Engn, Changsha, Hunan, Peoples R China
来源：
2007 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-7 | 2007年
关键词：
differential unitary space-frequency modulation (DUSFM); multiple symbol differential detection (MSDD); sphere decoding (SD);
D O I：
10.1109/ISIT.2007.4557646
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Differential unitary space-frequency modulation reduces the complexity of multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) systems significantly. But the conventional single symbol differential detection (SSDD) results in a high error floor over a severe multipath spreading channel. To overcome this limitation, a multiple symbol differential stack algorithm is proposed by embedding a recursion of maximum-likelihood metric in the stack algorithm. The proposed algorithm is suitable for arbitrary nondiagonal unitary space-frequency constellations and enhances the flexibility to multipath spread compared with SSDD.
引用
收藏
页码：2821 / 2825
页数：5
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