| 未知衰落信道中MPSK信号的非数据辅助载波频率估计方法 |
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| 引用本文： | 闫 哲,许 华.未知衰落信道中MPSK信号的非数据辅助载波频率估计方法[J].电讯技术,2011,51(10):29-34. |
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| 作者姓名： | 闫 哲 许 华 |
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| 作者单位： | 北京理工大学 机电工程与控制国家重点实验室，北京 100081;空军工程大学 电讯
工程学院，西安 710077 |
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| 基金项目： | 国家高技术研究发展计划（863计划）项目(2010AA7010422) |
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| 摘 要： | 未知衰落信道中的MPSK信号的非数据辅助载波频率估计是通信参数估计中的复杂问题,目前尚缺乏有效的针对性研究成果.针对该问题,提出采用先补偿信道影响,再去调制,然后进行非衰落信道单频信号频率估计的方法.该方法比进行频率和信道冲激响应联合估计的方法简洁和高效,而且解决了联合估计中难以有效去调制的问题.通过和非衰落信道的频率...
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| 关 键 词： | 未知衰落信道 MPSK信号 频率估计 最大似然 非数据辅助 |
Non Data-aided Carrier Frequency Estimation Method for MPSK Signal in Unknown Fading Channel |
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| YAN Zhe and XU Hua.Non Data-aided Carrier Frequency Estimation Method for MPSK Signal in Unknown Fading Channel[J].Telecommunication Engineering,2011,51(10):29-34. |
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| Authors: | YAN Zhe and XU Hua |
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| Affiliation: | 1.National Key Laboratory of Mechatronic Engineering and Control,Beijing Institute of Technology,Beijing 100081,China;2.Telecommunication Engineering Institute,Air Force Engineering University,Xi′an 710077,China) |
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| Abstract: | The non data aided(NDA) carrier frequency estimation of MPSK signal in unknown
fading chan
nel is a complicated problem in the field of communication parameter e
stimation and there is no research result for this problem at present. The metho
d proposed in this paper is that the fading channel effects are compensated fir
stly and then the modulation of MPSK is removed, and finally the frequency estim
ation is only performed for unfading single frequency signal. This method is mor
e simple and efficient than the method which uses joint frequency and channel im
pulse response estimation, and furthermore it is much more convenient to remove
modulation for MPSK signal. Comparison with the frequency estimation research of
n
on fading channel demonstrates that the estimation performance decreases less t
han 3dB and this
method can satisfy most application requirements. |
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| Keywords: | |
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