| DS-UWB RAKE接收机多径合成性能分析 |
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| 引用本文： | 杨欣,姜弢.DS-UWB RAKE接收机多径合成性能分析[J].齐齐哈尔大学学报(自然科学版),2007,23(2):45-48. |
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| 作者姓名： | 杨欣 姜弢 |
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| 作者单位： | 哈尔滨工程大学信息与通信工程学院,哈尔滨,150001 |
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| 基金项目： | 人事部留学人员科技活动项目择优资助项目 |
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| 摘 要： | 首先介绍了DS-UWB系统的的发射与接收模型，然后分析了利用滑动相关法对信道进行估计，并由此给出了不同RAKE接收机RAKE合成权系数选取方案。对接收机采用最大比（MAC）、最小均方误差（MMSE）及带均衡器的（MRC）合并系数选取的误码性能进行了仿真和对比。结果表明了带均衡器的MRC—RAKE只用较少的分支就可以达到接收性能明显优于MMSE—RAKE的程度。尤其在信噪比比较大时。这种优势更加明显。
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| 关 键 词： | 信号检测 |
| 文章编号： | 1007-984X（2007）02-0045-04 |
| 收稿时间： | 2007-01-10 |
| 修稿时间： | 2007年1月10日 |
Performance of DS-UWB RAKE receivers with multi-path synthesize |
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| YANG Xin,JIANG Tao.Performance of DS-UWB RAKE receivers with multi-path synthesize[J].Journal of Qiqihar University(Natural Science Edition),2007,23(2):45-48. |
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| Authors: | YANG Xin JIANG Tao |
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| Abstract: | The channel of UWB has the characteristics of dense multi-path, so we can adopt rake receiver technology in multi-path environment. In this paper, first of all, we introduce the DS-UWB transmit and receive system model,then analyze to use the general sliding correlator method for the channel estimation.Meanwhile,we pointed out the selection method of the weight coefficient of different stategies for exploiting diversity. The presented simulation includes the BER comparison of different rakes, such as MRC-Rake, MMSE-Rake and MRC-Rake-equalizer. It is observed that MRC-Rake-equalizer can achieve the better BER than MMSE-Rake with less multi-paths, especially when SNR increase, this advantage become more obvious. |
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| Keywords: | RAKE DS-UWB |
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