Elixir Online Journal

CATEGORIES

Architecture and Design

Cement and Concrete Composites Historic Preservation Sustainable Architecture

Arts and Social Science

Literature Linguistics and Translation Social Science

Biomedical and Life Sciences

Applied Botany Applied Biology Aquaculture Bio-Physics Bio Technology Food Science Hormones and Signaling Semen Dilution and Freezing Biomedical Science and Technology

Business Administration, Management and Economics

Finance Management International Business Management Human Resource Management Marketing Management Management Arts Production Management Tourism Management Project Management

Chemistry and Materials Science

Applied Chemistry Chemical Physics Computational Chemistry Corrosion Chemical Physics Letters Organic Chemistry Optical Materials Nanocomposite Materials Semiconductor Materials Nanotechnology Liquid Crystal Technology Dye Chemistry Magnetic Materials

Discrete Mathematics and Cryptography

Applied Mathematics Cryptology Discrete Mathematics Statistics Advances in Pure Mathematics

Earth and Environmental Science

Agriculture Bio-Diversity Pollution Remote Sensing Meteorology Geoscience Infrastructure Management Horticultural Science

Engineering

Advanced Engineering Informatics Adoc Network Chemical Engineering Control Engineering Electrical Engineering Computer Science and Engineering Mechanical Engineering Network Engineering Power Electronics Engineering Thermal Engineering Nanosensors Image Processing Renewable Energy Engineering

Education

Educational Technology Leadership Management Psychology Social Studies Mathematics Education

Humanities and Law

Criminal Law International Law

Medical Science

Human-Physiology Pharmacy Virus Research Dentistry Forensic Serology

Physics and Astronomy

Advanced Powder Technology Crystal Growth Crystal Research Technology Polymer Space Science Vibrational Spectroscopy Ultrasonics Thin Film Technology Nuclear and Radiation Physics

Short Communication

Comments Criticism

Announcement

Editor-in-Chief

ISSUE

Current Issues

May2013

Past Issues

April 2013
March 2013
February 2013
January 2013
2012
2011

An improved multiple description scalable coding for video transmission over unreliable networks

Author:Nagabhushana and G Mahadevan

Abstract:
Developing real time multimedia applications for best effort networks such as the Internet requires prohibitions against jitter delay and frame loss. This problem is further complicated in wireless networks as the rate of frame corruption or loss is higher in wireless networks while they generally have lower data rates compared to wired networks. On the other hand, variations of the bandwidth and the receiving device characteristics require data rate adaptation capability of the coding method. Multiple description Scalable Coding (MDS) methods are used to solve the jitter delay and frame loss problems by making the transmitted data more error resilient, however, this results in reduced data rate because of the added overhead. MDS methods do not address the bandwidth variation and receiver characteristics differences. In this paper a new method based on integrating MDS and the scalable coding extension of H.264 standard is proposed. Our method can handle both jitter delay and frame loss, and data rate adaptation problems. Our method utilizes motion compensating scheme and, therefore, is compatible with the current video coding standards such as MPEG-4 and H.264. Based on the simulated network conditions, our method shows promising results and we have achieved up to 38.3607dB for average Y-PSNR.