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| 基于导频信号的OFDM通信系统信道估计与跟踪 | |
| 引用本文： | 何修富,廖桂生,何映锋.基于导频信号的OFDM通信系统信道估计与跟踪[J].电路与系统学报,2008,13(6). |
| 作者姓名： | 何修富 廖桂生 何映锋 |
| 作者单位： | 1. 西安电子科技大学,雷达信号处理国家重点实验室,陕西,西安,710071;西安交通大学城市学院,陕西,西安,710018 2. 西安电子科技大学,雷达信号处理国家重点实验室,陕西,西安,710071 3. 西安理工大学,自动化与信息工程学院,陕西,西安,710048 |
| 摘 要： | 讨论了在正交频分复用(OFDM)通信系统中,基于导频信号,采用投影逼近子空间(PAST)算法实现信道的跟踪估计,在快速变化的信道中,信道阶数自动跟踪,与传统的信道估计方法相比,信道估计精度提高,均方误差减小.通过计算机模拟仿真,验证了信道估计的跟踪性能得到了改善. |
| 关 键 词： | 信道跟踪与估计 投影逼近子空间 均方误差 |
The channel estimation and tracking based on the pilot signal for OFDM systems |
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| HE Xiu-fu,LIAO Gui-sheng,HE Ying-feng.The channel estimation and tracking based on the pilot signal for OFDM systems[J].Journal of Circuits and Systems,2008,13(6). | |
| Authors: | HE Xiu-fu LIAO Gui-sheng HE Ying-feng |
| Affiliation: | HE Xiu-fu1,2,LIAO Gui-sheng1,HE Ying-feng3(1.National Key Lab.of Radar Signal Processing,Xidian University,Xi\'an 710071,China,2.Xi\'an Jiao Tong University City College,Xi\'an 710018,3.Xi\'an Li Gong University Automatic , Information College,Xi\'an 710048,China) |
| Abstract: | The channel estimation and tracking based on the pilot signal and the projection approximation subspace tracking(PAST) algorithm is discussed in the orthogonal frequency division multiplexing(OFDM) communication system.The channel order may be automatically tracked in this algorithm.Through the computer simulation and comparison with the traditional channel estimation methods, the precision of this channel estimation algorithm is higher, and the mean square error(MSE) is decreased.It proves that the trackin... |
| Keywords: | channel estimation and tracking projection approximation subspace tracking(PAST) the mean square error |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |