NDLI: Turbo Trellis Coded Modulation (1996)

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Turbo Trellis Coded Modulation (1996)

Content Provider	CiteSeerX
Author	Blackert, W. J. Wilson, S. G.
Description	Turbo codes have excited the coding community with the promise of performing near channel capacity by using an iterative decoding technique that relies upon simple constituent codes. However, since the original turbo codes are low rate codes, a significant bandwidth penalty can be incurred by systems which utilize turbo codes. Since the constituent codes that make up turbo codes are convolutional codes, a natural extension of the turbo concept, in order to improve bandwidth efficiency, is its application to Trellis Coded Modulation (TCM) systems. This paper will discuss the conditions under which encoders with parallel transitions can be used as constituent codes in Turbo TCM systems and present results to compare systems with and without parallel transition constituent encoders. 1 Introduction Turbo coding, introduced in [1], is a coding technique that uses an iterative decoding algorithm to give performance near channel capacity. Since Turbo codes use convolutional codes as their co...
File Format	PDF
Language	English
Publisher Date	1996-01-01
Publisher Institution	in Proc. CISS’96
Access Restriction	Open
Subject Keyword	Simple Constituent Code Constituent Code Iterative Decoding Technique Bandwidth Efficiency Parallel Transition Constituent Encoders Convolutional Code Original Turbo Code Significant Bandwidth Penalty Trellis Coded Modulation Iterative Decoding Algorithm Turbo Tcm System Parallel Transition Low Rate Code Channel Capacity Coding Technique Natural Extension Turbo Code Introduction Turbo Coding Turbo Concept Present Result Turbo Trellis Coded Modulation
Content Type	Text
Resource Type	Article

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