Timing Recovery and Carrier Synchronization Using Ldpc Codes: Using Soft Decision Feedback to Aid Timing and Carrier Recovery - Esteban Luis Valles - Books - VDM Verlag - 9783639081770 - September 3, 2008
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Timing Recovery and Carrier Synchronization Using Ldpc Codes: Using Soft Decision Feedback to Aid Timing and Carrier Recovery

Esteban Luis Valles

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Timing Recovery and Carrier Synchronization Using Ldpc Codes: Using Soft Decision Feedback to Aid Timing and Carrier Recovery

This book provides techniques for symbol tracking andcarrier acquisition in a Low-Density Parity-Check(LDPC) coded transmission. In traditional receiverarchitectures, acquisition and tracking are performedusing phase-lock techniques that are independent ofthe channel-code decoding process. In burst receptionscenarios, bandwidth inefficientpiloting must often be embedded in a transmission inorder to accelerate acquisition to aid symbol timetracking at low signal-to-noise ratios. In this bookwe show that outputs from an iterative decoder can beused to improve the estimation of symbol frequencyand phase in either a pilotless environment orcomplementing available pilot information. Wedescribe a method capable of handling very largeoffsets with complexity that grows linearly with themaximum offset size. Combining information from theset of parity-check equations of a LDPC codeobservations with a properlycalibrated phase locked loop allows successfultracking in very high noise scenarios. The problem ofcarrier frequency estimation under these high noiseconditions is also addressed.

Media Books     Paperback Book   (Book with soft cover and glued back)
Released September 3, 2008
ISBN13 9783639081770
Publishers VDM Verlag
Pages 160
Dimensions 222 g
Language English