Extended Kalman filter channel estimation for line-of-sight detection in WCDMA mobile positioning
EURASIP Journal on Applied Signal Processing
Soft input channel estimation for turbo equalization
IEEE Transactions on Signal Processing - Part I
Factor graphs and the sum-product algorithm
IEEE Transactions on Information Theory
Unified design of iterative receivers using factor graphs
IEEE Transactions on Information Theory
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In this paper, we discuss a novel method for channel estimation. The approach is based on the idea of modeling the complex channel gains by a Markov random field. This graphical model is used to capture the statistical dependencies between consecutive taps in time and delay. The sum-product algorithm is finally employed to infer a MAP channel estimate from given observations.