Code-Aided Turbo Synchronization
- 30 July 2007
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 95 (6) , 1255-1271
- https://doi.org/10.1109/jproc.2007.896518
Abstract
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
This publication has 40 references indexed in Scilit:
- Algorithms for iterative decoding in the presence of strong phase noiseIEEE Journal on Selected Areas in Communications, 2005
- The True Cramer–Rao Bound for Carrier Frequency Estimation From a PSK SignalIEEE Transactions on Communications, 2004
- Turbo synchronization: an EM algorithm interpretationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- True Cramer–Rao Bound for Timing Recovery From a Bandlimited Linearly Modulated Waveform With Unknown Carrier Phase and FrequencyIEEE Transactions on Communications, 2004
- The generalized distributive lawIEEE Transactions on Information Theory, 2000
- On the true and the modified Cramer-Rao bounds for the estimation of a scalar parameter in the presence of nuisance parametersIEEE Transactions on Communications, 1998
- The modified Cramer-Rao bound in vector parameter estimationIEEE Transactions on Communications, 1998
- The modified Cramer-Rao bound and its application to synchronization problemsIEEE Transactions on Communications, 1994
- Digital filter and square timing recoveryIEEE Transactions on Communications, 1988
- Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmissionIEEE Transactions on Information Theory, 1983