| 基于匹配追踪的MB-OFDM时域信道估计 |
| |
| 引用本文： | 张先玉,刘郁林,罗颖光.基于匹配追踪的MB-OFDM时域信道估计[J].安徽大学学报(自然科学版),2009,33(1). |
| |
| 作者姓名： | 张先玉 刘郁林 罗颖光 |
| |
| 作者单位： | 重庆通信学院,DSP实验室,重庆,400035 |
| |
| 基金项目： | 国家自然科学基金，重庆市自然科学基金 |
| |
| 摘 要： | 针对超宽带信道的稀疏特性,基于MB-OFDM系统提出一种基于匹配追踪的时域信道估计算法(MP-TD).首先利用OFDM数据块的循环卷积特性建立一种时域模型,然后采用匹配追踪(MP)算法探测出非零抽头的位置,最后利用非零抽头位置信息降低了估计维数并通过时域方法估计出信道.仿真证实了算法的有效性.
|
| 关 键 词： | 多频带正交频分复用 超宽带 抽头探测 匹配追踪 |
Channel estimation for MB-OFDM systems based on matching pursuit in the frequency domain |
| |
| ZHANG Xian-yu,LIU Yu-lin,LUO Ying-guang.Channel estimation for MB-OFDM systems based on matching pursuit in the frequency domain[J].Journal of Anhui University(Natural Sciences),2009,33(1). |
| |
| Authors: | ZHANG Xian-yu LIU Yu-lin LUO Ying-guang |
| |
| Institution: | DSP Lab;Chongqing Communication Institute;Chongqing 400035;China |
| |
| Abstract: | A novel channel estimation algorithm was proposed for MB-OFDM Ultra Wide-Band systems based on matching puisuit by exploiting the sparse property of channel impulse response.Firstly,a model in the time domain was established by utilizing the cyclic convolution property of the OFDM block.Then the nonzero taps were detected by exploiting the Matching Pursuit(MP) algorithm.Finally,the model was simplified and the channel parameters were gained by LS algorithm in the time domain.And the simulation results demon... |
| |
| Keywords: | MB-OFDM ultra wide-band tap detecting matching pursuit(MP) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
