Title :
Performance evaluation of frequency estimators for nonlinear synchronizers
Author :
Velarde Montecinos, Romeo ; Onochie, Frank
Author_Institution :
Hughes Network Syst., San Diego, CA, USA
Abstract :
The performance of three data-aided frequency estimators is evaluated for their application in nonlinear synchronizers. Results are compared for the two known estimators and a proposed phase increment estimator (PIE). This estimator shows better performance in general. A possible improvement of the estimator is presented by using a decision directed (DD) approach. The PIE estimator is selected as the proper match for the DD scheme. Improvement is observed for low signal-to-noise ratio
Keywords :
frequency estimation; nonlinear estimation; phase shift keying; synchronisation; tracking; BPSK modulated signals; SNR; decision directed algorithm; digital communication systems; frequency estimators; frequency tracking system; nonlinear synchronizers; phase increment estimator; signal-to-noise ratio; Additive white noise; Binary phase shift keying; Frequency conversion; Frequency estimation; Frequency synchronization; Gaussian noise; Performance loss; Phase estimation; Signal to noise ratio; Timing;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965824
