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Trellis-based iterative decoding of block codes for satellite ATM


Trellis-based iterative decoding of block codes for satellite ATM

Vilaipornsawai, Usa (2001) Trellis-based iterative decoding of block codes for satellite ATM. Masters thesis, Concordia University.

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In power-limited channels such as satellite links, error control codes are needed to provide high performance at very low Signal-to-Noise Ratios (SNRs). Turbo Codes or concatenated codes with iterative decoding, can achieve a performance very close to the Shannon limit. They are the most powerful codes known so far and are considered for use in various applications. In this thesis, we present the turbo codes using Reed-Muller (RM) codes as their component codes, and where the decoding method used is the trellis-based iterative Maximum A posteriori Probability (MAP) algorithm which provides an optimal performance. We aim to apply our turbo coding scheme to Asynchronous Transfer Mode (ATM) applications in Digital Video Broadcast - Return Channel via Satellite (DVB-RCS). Therefore, the shortened versions of ordinary RM-turbo codes are proposed. As well, we investigate the effect of phase offset on the shortened RM-turbo code performance with Quadrature Phase Shift Keying (QPSK) modulation scheme and the effect of preamble size used to recover carrier phase due to the problem of synchronization which is usually raised in practical systems

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Thesis (Masters)
Authors:Vilaipornsawai, Usa
Pagination:xiii, 94 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Electrical and Computer Engineering
Thesis Supervisor(s):Soleymani, Mohammad Reza
ID Code:1297
Deposited By: Concordia University Library
Deposited On:27 Aug 2009 17:18
Last Modified:18 Jan 2018 17:16
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