Joint estimation of channel parameters for very low signal-to-noise ratio environment in mobile radio propagations
Article first published online: 6 AUG 2010
Copyright 2010 by the American Geophysical Union.
Volume 45, Issue 4, August 2010
How to Cite
2010), Joint estimation of channel parameters for very low signal-to-noise ratio environment in mobile radio propagations, Radio Sci., 45, RS4010, doi:10.1029/2009RS004273., , , , , and (
- Issue published online: 6 AUG 2010
- Article first published online: 6 AUG 2010
- Manuscript Accepted: 7 MAY 2010
- Manuscript Revised: 22 APR 2010
- Manuscript Received: 5 SEP 2009
- radio propagation;
- parameter estimation;
- mobile communication
 Since signal-to-noise ratio (SNR) and Doppler shift are two important channel parameters affecting the reception performance in the radio propagation channel, we put forward a joint estimator to estimate the two parameters in very low SNR environments in radio systems. The proposed estimator exploits the relation between level crossing rate (LCR) and SNR, and realizes the estimation of the Doppler shift and SNR through double sampling rate (DSR) signal processing. Extensive simulations conducted under a wide range of noise corruption clearly show that our joint estimation algorithm substantially outperforms several existing estimators in terms of accuracy.