Title :
Maximum likelihood delay-Doppler imaging of fading mobile communication channels
Author :
Davis, Lloyd M. ; Collings, Iain B. ; Evans, Robin J.
Author_Institution :
Global Wireless Syst. Res., Bell Labs., Australia
Abstract :
This paper presents a new recursive algorithm for maximum likelihood estimation of the delay Doppler characteristics of fast-fading mobile communication channels. The channel is modelled as an FIR filter with rapidly varying complex coefficients. The parameters of interest are the mean channel taps and the tap covariance. The structure of the channel tap covariance matrix is exploited to provide convergence to constrained channel estimates
Keywords :
Doppler effect; FIR filters; covariance matrices; fading channels; maximum likelihood estimation; mobile radio; recursive estimation; FIR filter; channel tap covariance matrix; constrained channel estimates; fading mobile communication channels; maximum likelihood delay-Doppler imaging; maximum likelihood estimation; mean channel taps; rapidly varying complex coefficients; recursive algorithm; Additive noise; Covariance matrix; Delay effects; Delay estimation; Fading; Finite impulse response filter; Maximum likelihood estimation; Mobile communication; Reflectivity; Signal processing;
Conference_Titel :
Statistical Signal and Array Processing, 2000. Proceedings of the Tenth IEEE Workshop on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-5988-7
DOI :
10.1109/SSAP.2000.870101
