NDLI: Error-resilient first-order multiplexed source codes: performance bounds, design and decoding algorithms

Content Provider	IEEE Xplore Digital Library
Author	Jegou, H. Guillemot, C.
Copyright Year	1991
Abstract	This paper describes a new family of error-resilient variable-length source codes (VLCs). The codes introduced can be regarded as generalizations of the multiplexed codes described by Je/spl acute/gou and Guillemot. They allow to exploit first-order source statistics while, at the same time, being resilient to transmission errors. The design principle consists of creating a codebook of fixed-length codewords (FLCs) for high-priority information and in using the inherent codebook redundancy to describe low-priority information. The FLC codebook is partitioned into equivalence classes according to the conditional probabilities of the high-priority source. The error propagation phenomenon, which may result from the memory of the source coder, is controlled by choosing appropriate codebook partitions and index assignment strategies. In particular, a context-dependent index assignment strategy, called crossed-index assignment, is described. For the symbol error rate criterion, the approach turns out to maximize the cardinality of a set of codewords, called the code kernel, offering synchronization properties. The decoder resynchronization capability is shown to be further increased by periodic use of memoryless multiplexed codes. Theoretical and practical performances in terms of compression efficiency and error resilience are analyzed.
Sponsorship	IEEE Signal Processing Society
Starting Page	1483
Ending Page	1493
Page Count	11
File Size	468011
File Format	PDF
ISSN	1053587X
Volume Number	54
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Decoding Redundancy Error analysis Error correction codes Resilience Entropy Data compression Associate members Probability wireless communication Data communication data compression entropy codes source coding variable-length codes
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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