Title :
SNR threshold indicator in data-aided frequency synchronization
Author :
Atallah, Leïla Najjar ; Barbot, Jean-Pierre ; Larzabal, Pascal
Author_Institution :
Ecole Normale Superieure de Cachan, Lab. SATIE, Cachan, France
Abstract :
The signal-to-noise ratio (SNR) threshold behavior is studied in the frame of data-aided carrier synchronization in additive white Gaussian noise. The closed form expression of the Chapman-Robbins bound, relative to the carrier frequency offset estimation is first established then used to derive an indicator of the SNR threshold. For a given sequence of pilot symbols, the threshold region is localized at the departure of the Chapman-Robbins bound from the Cramer-Rao bound. The data-aided maximum likelihood estimator is considered to examine the derived indicator usefulness.
Keywords :
AWGN; digital communication; maximum likelihood estimation; synchronisation; AWGN; Chapman-Robbins bound; Cramer-Rao bound; SNR; additive white Gaussian noise; carrier frequency offset estimation; carrier synchronization; data-aided frequency synchronization; data-aided maximum likelihood estimator; signal-to-noise ratio; threshold indicator; Additive white noise; Bayesian methods; Digital communication; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; Mean square error methods; Parameter estimation; Signal to noise ratio; Testing; Carrier synchronization; Chapman-Robbins bound; Cramer-Rao bound; threshold effect;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2004.831683
