%0 Journal Article
%T Joint source-channel coding/decoding based on unequal error protection in space communication<br>面向空间通信不平等差错保护的联合信源信道编解码方法
%A LIU Xiao-Min
%A TU Guo-Fang
%A <br>刘晓敏
%A 涂国防
%J 中国科学院研究生院学报
%D 2009
%I 
%X In this paper we proposed a joint source-channel coding/decoding approach based on unequal error protection in space communication since the DC coefficients are especially significant for image quality in CCSDS IDC. A reversible coding/decoding scheme was adopted for the DC coefficients for special protection, in which the output bit stream of the DC coefficients was encoded by using alternating run-length encoding and then the run-lengths were encoded by reversible variable length codes (RVLC). Meanwhile, variable length coding/decoding scheme was adopted for the AC coefficients. The experiment showed that this approach could greatly alleviate error propagation and improve the error-resilient performance of the DC coefficients,and the approach thereby could improve transmitted image quality.
%K unequal error protection
%K source-channel coding/decoding
%K reversible coding/decoding
%K error propagation<br>不平等差错保护
%K 信源信道编解码
%K 可逆编解码
%K 错误扩散
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=67CDFDECD959936E166E0F72DE972847&aid=4E75D596E43E12E3580A90582C8CF50A&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=94C357A881DFC066&sid=46FF101E7ECF9F15&eid=B10D796AE1B3FEBD&journal_id=1002-1175&journal_name=中国科学院研究生院学报&referenced_num=0&reference_num=14