| 自适应DBF中采样快拍数对系统输出SINR影响 |
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| 引用本文： | 刘玲,曾浩,曾孝平. 自适应DBF中采样快拍数对系统输出SINR影响[J]. 重庆大学学报(自然科学版), 2007, 30(2): 61-64 |
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| 作者姓名： | 刘玲 曾浩 曾孝平 |
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| 作者单位： | 重庆大学,通信工程学院,重庆,400030;重庆大学,通信工程学院,重庆,400030;重庆大学,通信工程学院,重庆,400030 |
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| 摘 要： | 在自适应数字波束合成(DBF)中,快拍数直接影响了协方差矩阵估计的效果,从而影响系统的输出信干噪比(SINR).文中分析了最大似然协方差矩阵估计和空间平滑协方差矩阵估计时,不同类型DBF系统采用快拍数大小同输出SINR关系.分析结论对于系统设计中快拍数确定具有重要意义.
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| 关 键 词： | 协方差矩阵 波束合成 快拍数 信干噪比 |
| 文章编号： | 1000-582X(2007)02-0061-04 |
| 修稿时间： | 2006-08-17 |
Effect of the number of snapshots on the SINR of adaptive DBF system |
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| LIU Ling,ZENG Hao,ZENG Xiao-ping. Effect of the number of snapshots on the SINR of adaptive DBF system[J]. Journal of Chongqing University(Natural Science Edition), 2007, 30(2): 61-64 |
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| Authors: | LIU Ling ZENG Hao ZENG Xiao-ping |
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| Affiliation: | College of Communication Enginerring, Chongqing University, Chongqing 400030, China |
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| Abstract: | In the most algorithms of adaptive DBF, the number of the snapshots used to estimate the covariance matrix decides the estimation error directly, and it also effects the SINR of the system. The relationship between the number of snapshots and SINR are present here with maximum likelihood estimation and spatial smoothing estimation algorithms, which is important for the system designer to take the fight number of snapshots. |
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| Keywords: | covariance matrix beam forming the number of snapshots signal-to-interference and noise ratio |
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