基于QM算术编码器的CX序列的反推原理及实现  

Backstepping principle and implementation of CX sequence based on QM arithmetic encoder

作　　者：徐世寅[1] 徐妮妮[1] 杨雪玲[1] 王静[1] 

机构地区：[1]天津工业大学电子与信息工程学院,天津300387

出　　处：《天津工业大学学报》2013年第1期61-65,88,共6页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(60602036)

摘　　要：通过对ISO/IEC 10918-1:1993(E)中的QM算术编码器流程图和测试序列进行分析,得出CX序列反推原理.利用测试序列中已有的D、MPS、Qe 3列数据,结合QM算术编码器的概率推断状态机和最小化原则,将QM算术编码器的测试序列中所缺的CX序列补充完整,同时得到MPS、Index的初始值,然后将所得数据输入QM算术编码器,验证所产生CX序列的正确性.The backstepping principle of CX sequence is obtained by the analysis of the flow chart and test sequence about QM arithmetic encoder in ISO/IEC 10918-1 ： 1993 （E）. Using D, MPS, Qe, the three columns of data in test sequence, and combining probability estimation state machine of QM arithmetic encoder and the minimization principle, the test sequence of QM arithmetic encoder is supplemented with its lacking CX sequence, meanwhile, initial values of MPS and Index is gotten. Then, the obtained data are entered into QM arithmetic encoder and the correctness of produced CX sequence is verified.

关 键 词：CX序列 QM算术编码 最小化原则 反推原理 

分 类 号：TN911.7[电子电信—通信与信息系统]