基于信道缩短的UWB信道最小二乘估计

Least square method for UWB channel estimation based on channel shortening

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摘要在使用最小二乘算法进行超宽带(UWB)信道估计时,当信道冲激响应的长度大于发送脉冲的帧长度,则在接收端会产生各个脉冲冲激响应之间的相互干扰,影响信道估计的效果。提出使用信道缩短技术,对实际信道的长度进行缩短,估计出缩短信道后再恢复成实际的超宽带信道。仿真实验表明,在信道长度大于脉冲帧长度时,仍然能很好地估计出信道,有效地解决干扰问题。 When the least square algorithm is used to estimate the channel in ultra wide band （UWB） communications, the inter-frame interference will lead to significant performance degradation in receiver if the frame duration of the transmitted pulses less than the duration of the channel. This problem could be effectively solved by using the channel shortening technique to compress the length of the combined channel. After the combined channel has been estimated, the actual UWB channel could be recovered. Simulation results demonstrate that the channel could be well estimated even when the duration of the channel is larger than the frame duration.

作者田来刘郁林邝杨

机构地区重庆通信学院重庆邮电大学

出处《重庆邮电大学学报（自然科学版）》北大核心 2010年第2期179-182,共4页 Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基金国家自然科学基金资助项目(60672157)~~

关键词信道缩短超宽带最小二乘 channel shortening ultra wide band （UWB） least square

分类号 TN911.5 [电子电信—通信与信息系统]

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1朱行涛,刘郁林,蔡凯,徐舜.基于信道缩短的TH-PPM UWB稀疏信道盲估计算法[J].数据采集与处理,2010,25(5):565-568.
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3吴国伟,司锡才.ADSL系统信道与回波冲激响应联合缩短算法研究[J].哈尔滨工程大学学报,2001,22(6):52-54.
4朱行涛,刘郁林,蔡凯,杨磊.一种基于信道缩短的MB-OFDM UWB稀疏信道估计算法[J].电路与系统学报,2010,15(5):127-130. 被引量：2
5黄贻培,游晓容.基于稀疏特性的TH-PPM UWB信道估计算法[J].重庆邮电大学学报(自然科学版),2010,22(1):23-26. 被引量：1
6何仕鹏,黄清,胡臻.盲自适应信道缩短的改进算法[J].有线电视技术,2007,14(2):73-76.
7张先玉,刘郁林.IR-UWB系统中基于信道缩短的信道估计[J].云南大学学报（自然科学版）,2009,31(4):358-363.
8罗颖光,刘郁林,王国鹏.基于导频序列信道缩短的超宽带信道估计[J].通信技术,2009,42(3):62-64. 被引量：2
9刘水生,沈元隆.一种改进的基于MMSE准则信道缩短算法[J].电力系统通信,2011,32(6):58-61.
10罗颖光,彭兴东,刘郁林,王国鹏.MB-OFDM UWB系统中基于信道缩短的信道估计[J].电讯技术,2008,48(11):10-14.

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基于信道缩短的UWB信道最小二乘估计

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