| 一种适用于超宽带系统的低复杂度RAKE接收机 |
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| 引用本文： | 张新跃,陶小峰,张平,沈树群.一种适用于超宽带系统的低复杂度RAKE接收机[J].北京邮电大学学报,2005,28(3):93-95. |
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| 作者姓名： | 张新跃 陶小峰 张平 沈树群 |
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| 作者单位： | 北京邮电大学,电子工程学院,北京,100876;北京邮电大学,电信工程学院,北京,100876 |
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| 摘 要： | 根据超宽带室内信道特点，阐述了一种低复杂度RAKE接收合并方案，方案降低了采样速率. 此外,采用基于最小均方误差(MMSE)估计方法得到合并系数，使得接收机使用较少的分支数就能达到良好的性能. 仿真结果表明，在存在窄带干扰(NBI)和符号间干扰(ISI)的情况下，该MMSE RAKE接收机性能要优于传统的最大比率合并（MRC）RAKE接收机.
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| 关 键 词： | 超宽带 无线个域网 最小均方误差估计 RAKE接收机 |
| 文章编号： | 1007-5321(2005)03-0093-03 |
| 修稿时间： | 2004年5月18日 |
A Low Complexity RAKE Receiver for Ultra-Wideband Communication System |
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| ZHANG Xin-yue,TAO Xiao-feng,ZHANG Ping,SHEN Shu-qun.A Low Complexity RAKE Receiver for Ultra-Wideband Communication System[J].Journal of Beijing University of Posts and Telecommunications,2005,28(3):93-95. |
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| Authors: | ZHANG Xin-yue TAO Xiao-feng ZHANG Ping SHEN Shu-qun |
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| Affiliation: | 1 School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2 School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | Compared to the characteristic of ultra-wideband (UWB) signal and multi-path propagation within indoor environment, a low complexity RAKE receiver scheme was expatiated, which debases system sample rate. Moreover, an algorithm based on minimum mean-square error (MMSE) parameter estimation was proposed as well to reduce the finger number and to improve performance. The performance of simulation receiver bit error rate (BER) shows that the algorithm is adaptive to pulse-based UWB system when narrowband interference and inter-symbol interference (ISI) exist. |
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| Keywords: | ultra-wideband wireless person area network minimum mean-square error RAKE receiver |
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