No abstract

Video communication through wireless channels is still a major problem due to the limitations in bandwidth and the presence of channel errors. The other limitations within the mobile networks is low transmission bit rate which demands the reduction of the used video resolution and a high efficient video compression technique. Video transmission in wireless environments is a challenging task calling for high-compression efficiency as well as a network-friendly design. The network-friendly design of H.264/AVC is addressed via the network abstraction layer that has been developed to transport the coded video data over any existing and future networks including wireless systems. Exploiting this feature, we present a modified temporal-spatial error concealment algorithm for H.264 coded video. Simulations were carried out in computing environment Matlab using the standard video-sequences.

This paper discusses transmission channels evaluation, error models and their subsequent simulations for the transmission of video content. To create a network topology and error channel models, NS-2 environment is used. In this paper, we simulated two basic error channel models, namely Gilbert-Elliot and Binary Symmetric channel model. Network traffic in topology is created by NT-MyEvalvid2 toolkit, which also serves to evaluate the data transferred and their subsequent visualization. In paper, we compare the measure of packet loss when using these error models with different input parameters and their impact on the quality of video transmission parameter evaluated by PSNR.

ABSTRACT

No abstract