信道状态信息和反馈对于一些广播信道容量和安全容量的影响

项目名称： 信道状态信息和反馈对于一些广播信道容量和安全容量的影响

项目编号： No.61271222

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 骆源

作者单位： 上海交通大学

项目金额： 75万元

中文摘要： 近年无线通信技术有了快速发展：在国内，宽带无线移动通信是面向国家重 大战略需求的基础研究内容；在国外，NASA 的火星探测、欧洲的伽利略计划蓬勃发展，而作为现代无线通信的动力与主要源泉之一的Shannon 信息论在国内相对研究较少。从通信环境来讲，无线通信的重要一环是干扰和相应安全问题。干扰可分为外在和内在，内在干扰多为模型内部信道之间的相互影响如干扰信道，外在干扰可以建模为边信息（又称信道状态信息），降低干扰的一种手段是反馈，分别影响编码器、信道物理属性等各个通信环节。另外，从通信目的来讲，多用户信息论中一个最基本的信道就是广播信道，一般广播信道的容量问题及纳入安全因素后的容量问题仍是多用户信息论中的困难问题之一。此次课题申请的主要研究内容为：以带边信息和反馈的一些广播信道安全容量问题或紧的可达区域问题为着眼点，主要使用Shannon信息论来研究相关的信道安全容量理论。

中文关键词： 广播信道；安全容量；信道状态信息；窃听信道；窃听策略

英文摘要： In recent years, wireless commnication maintains the fast development, the fundamental theory of which is strongly supported by the National Basic Research Program in China. Over the sea, there are also many important programs, for example, the Galileo Programme, the mars odyssey of NASA and so on.One of the big problems is of security. In this project, we focus on the capacity regions (including security parameters) of some broadcast channels affected by outside interference modelled as side information or channel state information,and with anti-interference means 'feedback'. In details, we first consider the model of wiretap channel (degraded broadcast channel) for the case that the main channel is controlled by channel state information (side information), and it is available at the transmitter in a noncausal manner or causal manner. Inner and outer bounds are derived on the capacity regions including security parameters for the noncausal and causal manners, and the secrecy capacity for both manners is also described and bounded, which provides the best transmission rate with perfect secrecy. Moreover, for the special case that the side information is available at the transmitter in a memoryless manner, both the capacity region and the secrecy capacity are determined. Second, the non-degraded wiretap channel

英文关键词： broadcast channel；secure capacity；channel state information；wiretap channel；observing strategy