办公室环境下的超宽带信道测量与建模

李德建; 周正; 李斌; 翟世俊; 蒋挺

办公室环境下的超宽带信道测量与建模

北京邮电大学信息与通信工程学院, 北京 100876

详细信息

作者简介:
李德建(1983-),男,河北人,北京邮电大学信息与通信工程学院博士生,主要从事压缩感知、超宽带信道估计与建模等方面的研究;周正(1945-),男,上海人,北京邮电大学教授,博士生导师,主要从事现代信号处理、短距离无线通信等方面的研究;李斌(1985-),男,甘肃人,北京邮电大学信息与通信工程学院博士生,主要从事低复杂度超宽带系统、人工智能算法等方面的研究。

通信作者:
李德建 E-mail:lidejian09@gmail.com

中图分类号: TN911
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出版历程
- 收稿日期: 2011-08-28
- 网络出版日期: 2020-12-30
- 发布日期: 2012-06-29

Ultra wideband channel measurement and modeling for the office environment

School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

摘要

摘要: 依据广泛的频域信道测量数据,提出了符合中国超宽带(UWB)技术频率使用规定的办公室室内信道模型。信道总体模型采用修正Saleh-Valenzuela (S-V)模型。在信道测量信号的后处理中,使用过渡带为高斯滚降特性的类高斯窗来提取符合中国超宽带频谱规范的测量信号。利用CLEAN算法从时域测量数据中提取高分辨率的离散信道响应,并为信道时域测量信号提出了一种基于小波分析的自动分簇算法,统计提取出了大尺度和小尺度信道模型参数。结果表明:提出的办公室超宽带信道模型和实测数据具有相近的时延扩展特性和平均多径数量,可以比IEEE 802.15.4a信道模型更好地反映中国办公室环境下的UWB信道特性。
- 超宽带 /
- 信道模型 /
- 办公室 /
- 分簇算法 /
- S-V模型
Abstract: A channel model for indoor office environment is proposed based on frequency-domain measurements according to the ultra wideband(UWB)frequency regulation specification of China.The modified Saleh-Valenzuela(S-V)model is exploited as the channel model.A quasi-Gaussian window with Gaussian transition band is used to extract the measurements that specified by the UWB frequency regulation of China from the time-domain measurements in the post-processing of channel modeling. Furthermore,the CLEAN algorithm is used to estimate the discrete channel response and a wavelet analysis based automatic cluster identification algorithm is proposed for the time-domain measurements.Both the large and small scale channel parameters are extracted based on statistical approach.Compared with the IEEE 802.15.4a channel model,simulation results show that the proposed office channel model matches the measurement data better on the channel characteristics of delay spread and the average number of paths.
- UWB /
- channel modeling /
- office environment /
- cluster identification algorithm /
- S-V Model

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参考文献(12)

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