A Smoother HD Streaming Media System with AL-FEC over Wi-Fi Multicast Channel

• Main Authors: Tseng, Pei-Shan, 曾姵珊
• Other Authors: Sun, Hung-Min
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/14064936504478942578

碩士 === 國立清華大學 === 資訊工程學系 === 100 === In this paper, we present a FEC(Forward Error Correction) scheme based on Raptor codes to protect the transmission of RTP-multimedia streams. Wireless network is a more terrible environment than wired network caused by higher packet lose rate while transporting data. It often lost packets. In this case, we choose a Forward Error Correction scheme based on Raptor codes for our system to recovery the data which is missing while transporting in a terrible environment. We demonstrate it through implementing with VLC media player on Linux system and transporting data by wireless network. So we can know that how good its capability is for restoring missing data. Otherwise, we also use a variety of methods to enhance the playback quality of audio and video on real-time transmission. Even though in the case of high packet loss rate, the audio and video still can be played stably and smoothly. We show that our system improves the usability and quality of media service greatly. We believe that this work makes the real-time multimedia service better and more comfortable in human life.