Performance analysis of secured video transmission over 3G networks based on H.264/AVC

摘要

Video transmission in wireless environment is a challenging task calling for high-compression efficiency as well as network friendly design which is achieved by means of H.264/AVC. Video transmission for mobile terminals is a major application in 3G systems and is a key factor for its success. Wireless links are error-prone and unreliable and so video transmission over 3G networks experiences packet loss due to fading and interference causing substantial quality degradation to the video which may be avoided by appropriate error resilience features. Moreover, it is important that the video is transmitted in a secured manner in certain applications like video conferencing, medical applications etc. This is achieved with the help of suitable encryption techniques without affecting the quality of the decoded video. Encryption of video transmission in wireless environment with suitable error resilience techniques to achieve good quality is the main objective of this work. Performance analysis of secured video transmission over 3G networks is done through quality measurement such as PSNR, bit overhead analysis, encryption time measurement, key sensitivity analysis and security analysis.