| 一种新的V-BLAST系统分段检测算法 |
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| 引用本文： | 屈代明,桂波. 一种新的V-BLAST系统分段检测算法[J]. 华中科技大学学报(自然科学版), 2004, 32(7): 85-87 |
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| 作者姓名： | 屈代明 桂波 |
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| 作者单位： | 华中科技大学,电子与信息工程系,湖北,武汉,430074;华中科技大学,电子与信息工程系,湖北,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划资助项目 (2 0 0 1AA1 2 30 1 4 ) |
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| 摘 要： | 因为垂直分层空时传输(V-BLAST)系统在平坦衰落信道中的传统检测方法判决反馈均衡(DFE)方法有错误扩散的问题，使得系统的总体性能取决于最初检测的分层信号的误符号率性能，针对这一问题提出了分段检测的概念，用性能最好的最大似然(ML)算法来联合检测最初的几个分层信号，以此来提高整个检测算法的性能，对于后续的几个分层信号，仍采用较为简单的DFE的方法．同时还提出了基于最小均方误差(MMSE)准则的新的分段检测方法．新分段检测方法和传统的DFE方法相比，在增加较小的复杂度的情况下，明显地改善了检测性能，仿真结果也验证了这一点．
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| 关 键 词： | V-BLAST 分段检测算法 MMSE ML |
| 文章编号： | 1671-4512(2004)07-0085-03 |
| 修稿时间： | 2003-07-21 |
The algorithm of segmented detection for V-BLAST system |
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| Qu Daiming Gui Bo Qu Daiming Dr., Dept. of Electronics , Information Eng.,Huazhong Univ. of Sci. , Tech.,Wuhan ,China.. The algorithm of segmented detection for V-BLAST system[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2004, 32(7): 85-87 |
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| Authors: | Qu Daiming Gui Bo Qu Daiming Dr. Dept. of Electronics & Information Eng. Huazhong Univ. of Sci. & Tech. Wuhan China. |
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| Affiliation: | Qu Daiming Gui Bo Qu Daiming Dr., Dept. of Electronics & Information Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | Detection algorithms for the Vertical Bell Laboratories Layered Space Time (V BLAST) system in a flat fading environment were studied. The concept of segmented detection was proposed. The segmented detection method was used to perform the maximum likelihood (ML) detection for the first layers and the DFE procedure for the remaining layers. A segmented detection algorithm based on minimum mean square error (MMSE) criterion was given. Compared with DFE method, the segmented detection improved the detection performance with the increase of limited complexity. The computer simulation verified it. |
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| Keywords: | V BLAST segmented detection algorithm MMSE ML |
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