Conference paper
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
Language: | English |
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Publisher: | IEEE |
Year: | 1999 |
Pages: | 382-386 |
Proceedings: | 1999 2nd IEEE Workshop on Signal Processing Advances in Wireless Communications |
Journal subtitle: | Spawc'99 |
ISBN: | 0780355997 and 9780780355996 |
Types: | Conference paper |
DOI: | 10.1109/SPAWC.1999.783098 |
Additive noise Business Doppler effect FFT Fading Frequency estimation Jakes model Maximum likelihood estimation Oscillators Performance gain Rayleigh Doppler frequency estimator Rayleigh channels Rayleigh fading channel Transmitters Wireless sensor networks adaptation parameters adaptive multiple access wireless receivers automatic reconfiguration cell capacities cellular radio channel capacity fast Fourier transforms frequency estimation high speed low speed maximum likelihood estimation maximum likelihood method maximum likelihood theory mobile channel mobile receivers multi-access systems multipath channels multipath propagation multiuser channels optimization performance verification post-processing radio receivers reliable estimates signal processing simulations terminal movement speed