基于极大似然理论的瑞利多普勒频率估计器

1999 2nd IEEE Workshop on Signal Processing Advances in Wireless Communications (Cat. No.99EX304) Pub Date : 1999-05-09 DOI:10.1109/SPAWC.1999.783098

H. Hansen, S. Affes, P. Mermelstein

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引用次数: 20

摘要

可靠的瑞利多普勒频率估计有助于自适应多址无线接收机的优化。这种接收机的自适应参数对多普勒信号量敏感，对终端移动速度的自动重构可以在低速和高速情况下优化小区容量。我们利用瑞利衰落信道的最大似然法和Jakes模型(1974)推导了一个多普勒频率估计器。这个估计器只需要FFT和简单的后处理。通过仿真验证了其性能，取得了良好的效果。

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A Rayleigh Doppler frequency estimator derived from maximum likelihood theory

Reliable estimates of Rayleigh Doppler frequency are useful for the optimization of adaptive multiple access wireless receivers. The adaptation parameters of such receivers are sensitive to the amount of Doppler and automatic reconfiguration to the speed of terminal movement can optimize cell capacities in low and high speed situations. We derive a Doppler frequency estimator using the maximum likelihood method and Jakes model (1974) of a Rayleigh fading channel. This estimator requires an FFT and simple post-processing only. Its performance is verified through simulations and found to yield good results.

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来源期刊

1999 2nd IEEE Workshop on Signal Processing Advances in Wireless Communications (Cat. No.99EX304)

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