A Theoretical Framework for Iterative Synchronization Based on the Sum-Product and the Expectation-Maximization Algorithms

This paper deals with maximum-likelihood (ML) estimation of synchronization parameters for coded transmission systems. In particular, we present a unified framework based on both the sum-product (SP) algorithm and the expectation-maximization (EM) algorithm for the design of iterative synchronizers....

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Bibliographic Details
Published in:IEEE transactions on signal processing Vol. 55; no. 5; pp. 1644 - 1658
Main Authors: Herzet, C., Ramon, V., Vandendorpe, L.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.05.2007
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithm design and analysis
Algorithms
Applied sciences
Bit error rate
Carriers
Coding, codes
Computer simulation
Convolutional codes
Design engineering
Exact sciences and technology
Expectation-maximization algorithms
Information, signal and communications theory
Iterative algorithms
Iterative methods
Maximum likelihood estimation
message passing
Parameter estimation
Signal and communications theory
Synchronism
Synchronization
Synchronizers
Telecommunications and information theory
Time measurements
Timing
Turbo codes
Performance evaluation
Convolutional code
Bit error rate
Iterative method
Turbo code
Synchronization
Mean square error
maximum-likelihood estimation
Message passing
Simulation
Frequency offset
Maximum likelihood
Timing
Iterative methods
EM algorithm
ISSN:1053-587X, 1941-0476
Online Access:Get full text
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Summary:This paper deals with maximum-likelihood (ML) estimation of synchronization parameters for coded transmission systems. In particular, we present a unified framework based on both the sum-product (SP) algorithm and the expectation-maximization (EM) algorithm for the design of iterative synchronizers. The proposed approach is shown to encompass some known iterative synchronizers. In particular, we revisit a previously proposed framework based on the EM algorithm only by means of our "SP-EM" approach. The performance of the proposed synchronization method is assessed in terms of mean-square error and bit-error rate by simulation results. In particular, we consider the joint synchronization of the timing epoch and the carrier phase offset in the case of convolutionally coded and turbo-coded transmissions
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ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2006.890828