| Summary: | 碩士 === 國立中山大學 === 資訊工程學系研究所 === 90 === Increases in bandwidth and computational speed lead to growing interests in real-time audio and video communication over the Internet. With dramatic increase in wireless access recently, a challenging problem associated with audio and video communication lies in how to cope with packet loss and achieve acceptable video quality at the receiver and utilizing the limited wireless bandwidth efficiently.
In this paper, we implement a system, Personal Mobile Communicator, to offer video and audio streaming communication. We employ MPEG-4 and GSM to compress video and audio data. MPEG-4 and GSM provide the standardized technological elements to compress video and audio data. MPEG-4 also takes a number of steps to enable robust transmission of compressed video data over noisy communication channels.
We implement error resilience tools for reliable transmission and error concealment technologies to provide better video quality when error occurred.
The goal of this paper, we design a communication system that is suitable for communication over wireless channel and offer a verification platform for further research.
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