一种基于多模板的超宽带信道估计算法

徐微; 赵加祥; 王东; 艾小溪

doi:10.3724/SP.J.1146.2009.01462

一种基于多模板的超宽带信道估计算法

doi: 10.3724/SP.J.1146.2009.01462

基金项目:

天津市应用及前沿技术研究计划(08JCYBJC12600)资助课题

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出版历程
- 收稿日期: 2009-11-13
- 修回日期: 2010-04-16
- 刊出日期: 2010-10-19

A Channel Estimation Algorithm of Ultra-wideband System Using Multi-Templates

摘要

摘要: 该文针对码片率抽头间隔的脉冲超宽带(IR-UWB)系统离散信道，提出一种基于帧(frame)级采样速率的多模板信道估计算法。在该算法中引入了若干个复合信道参数，每个复合信道参数都是几个独立信道参数的线性组合。利用极大似然准则和从多个模板中获得的帧级采样数据，可以先获得所有复合信道参数的极大似然估计值。然后联合由不同模板得到的复合信道参数估计值，得到每个独立的信道参数的极大似然估计。通过仿真，验证了该方法的可行性。
- 超宽带通信 /
- 信道估计 /
- 多模板 /
- Frame级采样率
Abstract: For the chip rate sampled channel impulse response of the IR-UWB system, a novel optimum data-aided channel estimation scheme is proposed that utilizes multi-templates to extract the frame-level samples from the received signal. Each frame-level rate sample for any given template is decomposed to a sum of a composite channel parameter (i.e., a linear combination of some channel parameters) and a noise. Based on these frame-level rate data and the maximum likelihood (ML) criterion, the ML estimates can be obtained for the composite channel parameters contained in these samples. The channel parameters can be computed through solving a set of the linear equations determined by the composite channel parameters. The simulations are provided to demonstrate the effectiveness of the proposed approach.
- Ultra wideband communications /
- Channel estimation algorithm /
- Multi-templates /
- Frame-level rate samples

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参考文献(1)

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