discus throw

Track-and-field sport of hurling for distance a disk-shaped object known as a discus. The discus is 8.6 in. (219 mm) in diameter and is thicker in the centre than at the perimeter; it must weigh at least 4.4 lbs (2 kg) for men's events, 2.2 lbs (1 kg) for women's. It is thrown by means of a whirling movement made by the athlete within a circle 8.2 ft (2.5 m) in diameter. The sport dates back to the ancient Greek Olympics.

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For the American trade association that has the same acronym, see Distilled Spirits Council of the United States

DISCUS is an acronym for Distributed Source Coding Using Syndromes.

Introduction

DISCUS is a compression algorithm used to compress correlated data sources.

DISCUS is a particular scheme used in source coding which is designed to achieve the Slepian-Wolf bound (David Slepian) 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 construction published in the Information Theory, IEEE Transactions on, 2003.

Variations

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

See also

• Modulo-N code is a simpler technique for compressing correlated data sources.

External links

• "Distributed source coding using syndromes (DISCUS): design and construction" by Pradhan, S.S. and Ramchandran, K.
• "DISCUS: Distributed Compression for Sensor Networks"
• Distributed Source Coding can also be implemented using Convolutional Codes or using Turbo Codes