Title :
Cramer-Rao bounds and estimators for the parameters of time selective fading channels
Author :
Ghogho, Mounir ; Swami, Ananthram
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
Abstract :
We consider the problem of estimating the Doppler shift and rate of a linearly modulated digital signal subject to time selective Rician fading. We derive the Cramer-Rao bounds for the parameters; we propose an estimator, based on the higher-order ambiguity function (HAF), and show that it is consistent. We also establish some interesting results in the context of estimating the parameters of a polynomial phase signal in complex multiplicative noise
Keywords :
Doppler shift; Gaussian noise; Rician channels; mobile satellite communication; modulation; parameter estimation; white noise; Cramer-Rao bounds; Doppler shift estimation; complex multiplicative noise; higher-order ambiguity function; linearly modulated digital signal; mobile communication; nongeosynchronous satellite system; parameter estimators; polynomial phase signal; rate estimation; time selective Rician fading; time selective fading channels; white Gaussian noise; Additive noise; Doppler shift; Fading; Frequency; Parameter estimation; Phase estimation; Phase noise; Rician channels; Satellites; Timing;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783104
