Title
Turbo Synchronization : An Em Algorithm Interpretation
Abstract
This paper is devoted to turbo synchronization, that is to say the use of soft information to estimate parameters like carrier phase, frequency offset or timing within a turbo receiver. It is shown how maximum-likelihood estimation of those synchronization parameters can be implemented by means of the iterative expectation-maximization (EM) algorithm [1]. Then we show that the EM algorithm iterations can be combined with those of a turbo receiver. This leads to a general theoretical framework for turbo synchronization. The soft decision-directed ad-hoc algorithm proposed in [2] for carrier phase recovery turns out to be a particular instance of this implementation. The proposed mathematical framework is illustrated by simulations reported for the particular case of carrier phase estimation combined with iterative demodulation and decoding [3].
Year
DOI
Venue
2003
10.1109/ICC.2003.1204575
2003 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5: NEW FRONTIERS IN TELECOMMUNICATIONS
Keywords
Field
DocType
iterative algorithm,expectation maximization,frequency offset,turbo codes,parameter estimation,synchronisation,maximum likelihood estimate,maximum likelihood estimation,demodulation,em algorithm
Turbo,Demodulation,Synchronization,Mathematical optimization,Expectation–maximization algorithm,Computer science,Turbo code,Frequency offset,Algorithm,Real-time computing,Turbo equalizer,Decoding methods
Conference
Citations 
PageRank 
References 
68
3.83
4
Authors
8
Name
Order
Citations
PageRank
Noels, N.116410.97
Cédric Herzet224724.06
A. Dejonghe3683.83
V. Lottici458641.25
H. Steendam529720.24
M. Moeneclaey61471274.44
M. Luise7683.83
L. Vandendorpe857882.38