Title :
Iterative Synchronization: EM Algorithm Versus Newton-Raphson Method
Author :
Herzet, C. ; Wautelet, X. ; Ramon, V. ; Vandendorpe, L.
Author_Institution :
Commun. Lab., Univ. Catholique de Louvain, Louvain-la-Nueve
Abstract :
This paper deals with iterative maximum-likelihood synchronization of a scalar parameter. An efficient implementation of the Newton-Raphson (NR) maximum-search method is proposed. Considering the latter implementation, the NR approach is shown to be an attractive alternative to synchronization methods based on the expectation-maximization (EM) algorithm. Simulation results for the case of phase-offset synchronization show that NR method usually increases the speed of convergence of the synchronization algorithm
Keywords :
Newton-Raphson method; expectation-maximisation algorithm; signal processing; synchronisation; EM algorithm; Newton-Raphson maximum-search method; expectation-maximization algorithm; iterative maximum-likelihood synchronization; phase-offset synchronization; scalar parameter; Convergence; Expectation-maximization algorithms; Iterative algorithms; Iterative methods; Laboratories; Maximum likelihood estimation; Newton method; Parameter estimation; Signal to noise ratio; Sum product algorithm;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660988
