Timing Recovery and Carrier Synchronization Using Ldpc Codes - Couverture souple

Valles, Esteban Luis

 
9783639081770: Timing Recovery and Carrier Synchronization Using Ldpc Codes
Couverture souple
ISBN 10 : 3639081773 ISBN 13 : 9783639081770
Editeur : VDM Verlag Dr. Mueller E.K., 2008

Synopsis

This book provides techniques for symbol tracking and carrier acquisition in a Low-Density Parity-Check (LDPC) coded transmission. In traditional receiver architectures, acquisition and tracking are performed using phase-lock techniques that are independent of the channel-code decoding process. In burst reception scenarios, bandwidth inefficient piloting must often be embedded in a transmission in order to accelerate acquisition to aid symbol time tracking at low signal-to-noise ratios. In this book we show that outputs from an iterative decoder can be used to improve the estimation of symbol frequency and phase in either a pilotless environment or complementing available pilot information. We describe a method capable of handling very large offsets with complexity that grows linearly with the maximum offset size. Combining information from the set of parity-check equations of a LDPC code observations with a properly calibrated phase locked loop allows successful tracking in very high noise scenarios. The problem of carrier frequency estimation under these high noise conditions is also addressed.

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Éditeur
VDM Verlag Dr. Mueller E.K.
Date d'édition
2008
Langue
anglais
ISBN 10 
3639081773
ISBN 13 
9783639081770
Reliure
Broché
Nombre de pages
160
Coordonnées du fabricant
non disponible
Personne responsable
non disponible