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- W2166321009 abstract "Transmitter/receiver motion in mobile radio channels may cause frequency shifts in each received path due to Doppler effects. Most blind equalization methods, however, assume time-invariant channels and may not be applicable to fading channels with severe Doppler spread. We address the problem of simultaneously estimating the Doppler shift and channel parameters in a blind setup. Both deterministic and stochastic maximum likelihood methods are developed and iterative solutions proposed. The stochastic maximum likelihood solution is based on the modified version of the Baum-Welch (1970) algorithm, which originated in the study of hidden Markov models. The proposed methods are well suited for short data records appearing in TDMA systems. Identifiability and performance analysis issues are discussed, and Cramer-Rao bounds are derived. In addition, some illustrative simulations are presented." @default.
- W2166321009 created "2016-06-24" @default.
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- W2166321009 date "1999-06-01" @default.
- W2166321009 modified "2023-10-13" @default.
- W2166321009 title "Maximum likelihood blind channel estimation in the presence of Doppler shifts" @default.
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- W2166321009 doi "https://doi.org/10.1109/78.765125" @default.
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