Title :
On-line Bayesian Cramer-Rao Bounds for OFDM slowly varying rayleigh multi-path channel estimation
Author :
Hijazi, Hussein ; Ros, Laurent
Author_Institution :
Image & Signal Dept., GIPSA-Lab., France
Abstract :
The on-line Bayesian Cramer-Rao (BCRB) lower bound for the dynamic estimation of a time-varying multi-path Rayleigh channel in 4-QAM OFDM system is considered. In case of negligible channel variation within one symbol and delay related information, true BCRB for data-aided (DA) context, and two closed-form expressions for non-data aided (NDA) context are derived.
Keywords :
Bayes methods; OFDM modulation; Rayleigh channels; channel estimation; multipath channels; quadrature amplitude modulation; time-varying channels; 4-QAM system; OFDM system; Rayleigh multipath channel estimation; data-aided context; nondata aided context; on-line Bayesian Cramer-Rao bound; orthogonal frequency division multiplexing; quadrature amplitude modulation; time-varying channel; Bayesian methods; Channel estimation; Context; Delay effects; Delay estimation; Frequency estimation; OFDM; Parameter estimation; Quadrature phase shift keying; Rayleigh channels;
Conference_Titel :
Wireless Communication Systems. 2008. ISWCS '08. IEEE International Symposium on
Conference_Location :
Reykjavik
Print_ISBN :
978-1-4244-2488-7
Electronic_ISBN :
978-1-4244-2489-4
DOI :
10.1109/ISWCS.2008.4726045
