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Code-aided turbo synchronization

delete2007-06-01
delete98
PRE
AI
C
Cédric Herzet *
N
Nele Noels
V
Vincenzo Lottici
H
Henk Wymeersch
M
Marco Luise
M
Marc Moeneclaey
L
Luc Vandendorpe
DOI：10.1109/JPROC.2007.896518delete
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Abstract

Abstract

En 中文
The introduction of turbo and low-density parity-check (LDPC) codes with iterative decoding that almost attain Shannon capacity challenges the synchronization subsystems of a data modem. Fast and accurate signal synchronization has to be performed at a much lower value of signal-to-noise ratio (SNR) than in previous less efficiently coded systems. The solution to this issue is developing specific synchronization techniques that take advantage of the presence of the channel code and of the iterative nature of decoding: the so-called turbo-synchronization algorithms. The aim of this paper within this special issue devoted to the turbo principle is twofold: on the one hand, it shows how the many turbo-synchronization algorithms that have already appeared in the literature can be cast into a simple and rigorous theoretical framework. On the other hand, it shows the application of such techniques in a few simple cases, and evaluates improvement that can be obtained from them, especially in the low-SNR regime.
Keywords:
iterative methods
maximum likelihood estimation
synchronization
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Journal

Proceedings of the IEEE cover
Proceedings of the IEEE
IF:
25.9
Papers:
9.9K
Citations:
4.5W

Organization

No organization information available