DISCUS

DISCUS is an acronym for Distributed Source Coding Using Syndromes.

Introduction

DISCUS is a particular scheme used in source coding which is designed toachieve the Slepian-Wolf bound by using channel codes.

History

DISCUS was invented by researchers SS Pradhan and K Ramachandran, in their seminal paper Distributed source coding using syndromes (DISCUS): design and constructionpublished in the Information Theory, IEEE Transactions on, 2003.

Principle

DISCUS is a source coding scheme for correlated sources, which are common in the caseof sensor readings from a dense group of . DISCUStries to model a particular source correlation as a channel noise, and tries tofind a channel code that performs well for this channel noise. This channel code,is then proved to be the best code that can perform as a source code for thecorrelated data sources.

Variations

Many variations of DISCUS are presented in related literature. One such popular schemeis the Channel Code Partitioning scheme, which is an a-priori scheme, to reach theSlepian-Wolf bound. Many papers illustrate simulations and experiments on channel code partitioning using theTurbo codes, Hamming codes and Irregular Repeat Accumulate Codes.