| 超宽带Rake接收机在密集多径信道下的性能 |
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| 引用本文： | 王德强, 刘丹谱, 乐光新. 超宽带Rake接收机在密集多径信道下的性能[J]. 电子与信息学报, 2005, 27(3): 415-418. |
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| 作者姓名： | 王德强 刘丹谱 乐光新 |
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| 作者单位： | 北京邮电大学电信工程学院,北京,100876;北京邮电大学电信工程学院,北京,100876;北京邮电大学电信工程学院,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 超宽带信号在室内环境中将经历密集多径传播,产生严重的时间弥敞。采用Rake接收是提高超宽带接收机性能的重要手段。该文针对采用BPSK调制的超宽带系统,推导出密集多径信道下Rake接收机的误码性能计算公式,揭示了Rake接收机性能与多径信道参数以及脉冲波形自相关系数之间的关系。针对典型信道模型和脉冲给出了计算实例。
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| 关 键 词： | 超宽带 Rake接收机 多径信道 |
| 文章编号： | 1009-5896(2005)03-0415-04 |
| 收稿时间： | 2003-11-28 |
| 修稿时间： | 2003-11-28 |
Performance of Ultra-wide Band Rake Receivers in Dense Multipath Channels |
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| Wang De-qiang, Liu Dan-pu, Yue Guang-xin. Performance of Ultra-wide Band Rake Receivers in Dense Multipath Channels[J]. Journal of Electronics & Information Technology, 2005, 27(3): 415-418. |
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| Authors: | WANG De-qiang LIU Dan-pu Yue Guang-xin |
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| Affiliation: | College of Telecomm. Eng.,Beijing Univ. of Posts and Telecomm.,Beijing 100876 China |
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| Abstract: | In indoor environments, ultra-wide band signals suffer from dense multipath propagation and severe time dispersion. Rake reception is an important way to boost the performance of ultra-wide band receivers. With the assumption that BPSK modulation is used, the equations used to compute BER performance of Rake receivers in dense multipath channels are derived. The BER performance is related to the multipath channel parameters and the pulse autocorrelation coefficients. With a typical channel model and specific pulse shapes, the computation has been done. |
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| Keywords: | Ultra-wide band Rake receiver Multipath channel |
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