Under Channel Capacity Constraint - Joint Source/Channel Coding in Video Transmission

• Main Authors: Wei-Chen Huang, 黃偉誠
• Other Authors: Jia-Chyi Wu
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/89618596255742870538

碩士 === 國立臺灣海洋大學 === 導航與通訊系 === 93 === Abstract The objective of this thesis is to investigate the joint source/channel coding algorithm, which provides a uniform video transmission rate to achieve better system performance with limited channel capacity. In the proposed algorithm we provid MPEG2 video coding scheme , and turbo channel coding technique as well as BPSK/QPSK for modulation method. In general, source coding and channel coding have been separately designed in order to achieve the best system performance, but which does not show a better performance while simply connecting the best Source coding scheme with the best channel coding scheme together.. Consequently, this study employs joint source-channel coding scheme and considers modulation to get the best performance in the system design. The proposed assigned rates to MPEG2 source coding and turbo channel coding schemes based upon the feedback information from Performance Control Unit(PCU) as well as system channel capacity limitation, which ensures the given system can achieve the best performance compared to conventional systems.