ALGEBRAIC CONSTRUCTION OF LDPC CODES FOR THE AWGN AND ERASURE CHANNELS

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" ALGEBRAIC CONSTRUCTION OF LDPC CODES FOR THE AWGN AND ERASURE CHANNELS "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	148836
Doc. No	:	ET20628
Main Entry	:	YING YU TAI
Title Proper	:	ALGEBRAIC CONSTRUCTION OF LDPC CODES FOR THE AWGN AND ERASURE CHANNELS
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	This dissertation is mainly concerned with construction of structured low-densityparity-check (LDPC) codes, especially in quasi-cyclic (QC) form, for three different typesof channels, namely the additive white Gaussian noise (AWGN), the binary random era-sure, and the binary burst erasure channels. Several new algebraic methods for systematicconstruction of QC-LDPC codes are presented. Also presented is a simple iterative algo-rithm for correcting erasure bursts. Codes constructed perform very well over all threetypes of channels and can be encoded using simple shift-registers with linear complexity.This encoding advantage is not shared by other types of LDPC codes and is importantin practice. In addition, codes constructed by these methods also show very encouragingperformance with high spectral efficiency transmission over fading channels..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL43768.pdf
Title and statement of responsibility and	:	ALGEBRAIC CONSTRUCTION OF LDPC CODES FOR THE AWGN AND ERASURE CHANNELS [Thesis]