这是一组小波分解与重构代码，大家可以交流学习
标签： 小波分解
上传时间： 2020-01-02
上传用户：461494244lcz
MATLAB7.0_从入门到精通，求是科技。。。。
标签： MATLAB7
上传时间： 2020-01-02
上传用户：dxtrine
软件维护协议，欢迎大家下载。。。。。。。。。。。。。。。。。。。。。。。。
上传时间： 2020-01-02
上传用户：5zouyi
深度学习，神经网络，卷积神经网络 Analysis of Deep Learning Models using CNN Techniques
上传时间： 2020-01-02
上传用户：wzy2020
安国U盘量产工具 并不适用于所有U盘，只给有缘人和懂的人
上传时间： 2020-01-03
上传用户：HYHol
是欧姆龙编程软件自带的是32位系统驱动，这里的是64位系统的驱动。
上传时间： 2020-01-03
上传用户：hukui8682
J.K. Rowling - HP 0 - Harry Potter Prequel.pdf
标签： J.K. Rowling Prequel Potter Harry
上传时间： 2020-01-03
上传用户：nothingtiger
labview读取表格数据，自己做的一个子vi，简单高效
上传时间： 2020-01-03
上传用户：15584153385
在线教学辅助系统在线教学辅助系统在线教学辅助系统在线教学辅助系统在线教学辅助系统在线教学辅助系统在线教学辅助系统在线教学辅助系统
上传时间： 2020-01-04
上传用户：重度拖延症233
Abstract—In the future communication applications, users may obtain their messages that have different importance levels distributively from several available sources, such as distributed storage or even devices belonging to other users. This scenario is the best modeled by the multilevel diversity coding systems (MDCS). To achieve perfect (information-theoretic) secrecy against wiretap channels, this paper investigates the fundamental limits on the secure rate region of the asymmetric MDCS (AMDCS), which include the symmetric case as a special case. Threshold perfect secrecy is added to the AMDCS model. The eavesdropper may have access to any one but not more than one subset of the channels but know nothing about the sources, as long as the size of the subset is not above the security level. The question of whether superposition (source separation) coding is optimal for such an AMDCS with threshold perfect secrecy is answered. A class of secure AMDCS (S-AMDCS) with an arbitrary number of encoders is solved, and it is shown that linear codes are optimal for this class of instances. However, in contrast with the secure symmetric MDCS, superposition is shown to be not optimal for S-AMDCS in general. In addition, necessary conditions on the existence of a secrecy key are determined as a design guideline.
标签： Fundamental Limits Secure Class on of
上传时间： 2020-01-04
上传用户：kddlas
