Timing Recovery and Carrier Synchronization Using Ldpc Codes - Couverture souple

Valles, Esteban Luis

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.

Détails de l'édition

• 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