| 基于混合结构导频和FFT低通滤波的OFDM信道估计 |
| |
| 引用本文： | 刘解华,杨东凯,常青,张其善.基于混合结构导频和FFT低通滤波的OFDM信道估计[J].电路与系统学报,2009,14(1). |
| |
| 作者姓名： | 刘解华 杨东凯 常青 张其善 |
| |
| 作者单位： | 北京航空航天大学,电子信息工程学院,北京,100083 |
| |
| 基金项目： | 航空科学基金，北京市科技新星计划 |
| |
| 摘 要： | 精确的估计精度、良好的跟踪能力,以及实现简单是信道估计的三个基本要求.本文提出一种混合结构导频的信道估计新方法,采用块状导频和基于FFT低通滤波的LS算法捕捉准确的信道频域响应,利用少数梳状导频和改进的LS算法跟踪信道变化和修正相位噪声.通过仿真证明,该方法估计精度高,频谱利用高,信道跟踪能力强,实现简单,满足了慢衰落信道环境下的应用要求.
|
| 关 键 词： | 正交频分复用 混合结构导频 FFT低通滤波 信道估计 |
Study on channel estimation based on hybrid type pilot and FFT lowpass filtering for OFDM |
| |
| LIU Jie-hua,YANG Dong-kai,CHANG Qing,ZHANG Qi-shan.Study on channel estimation based on hybrid type pilot and FFT lowpass filtering for OFDM[J].Journal of Circuits and Systems,2009,14(1). |
| |
| Authors: | LIU Jie-hua YANG Dong-kai CHANG Qing ZHANG Qi-shan |
| |
| Affiliation: | LIU Jie-hua,YANG Dong-kai,CHANG Qing,ZHANG Qi-shan(School Of Electronic , Information Engineering,BeiHang University,Beijing 100083,China) |
| |
| Abstract: | High estimation precision,good tracking performance and easy realization are essential to channel estimation.A novel channel estimation method based on hybrid type pilot is proposed.According to this method,block type pilots and a LS algorithm based on FFT lowpass filtering are adopted to capture accurate channel response in frequency domain;and a few of comb-type pilots and an improved LS algorithm are adopted to track channel change and correct phase noise.Simulation results show that this proposed method... |
| |
| Keywords: | OFDM hybrid type pilot FFT lowpass filtering channel estimation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
