中文摘要：

Wang Yue, received M.S. degree in communication and information system from Lan Zhou University, Ganshu province, P. R. China, in 1997. Now she is a Ph. D. candidate in Institute of Image Communication ＆ Information Processing Research in Shanghai Jiaotong University. The research interests include video coding and mobile communication. To whom correspondence should be addressed. E-mail：yuewang23@sjtu.edu.cn