项目名称: 基于协作转发和协作干扰的物理层安全技术研究
项目编号: No.61302088
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 无线电电子学、电信技术
项目作者: 龙航
作者单位: 北京邮电大学
项目金额: 25万元
中文摘要: 安全性是衡量通信系统质量的重要指标之一,而无线通信系统的开放性和移动性等特征为其安全性带来了巨大的挑战。近年来,物理层传输技术的发展和无线传播信道的唯一性和互易性等特征推动了物理层安全技术研究的发展,使其逐渐成为研究界的热点问题。其中,协作干扰技术的提出是物理层安全技术研究中的一大突破,将干扰这一消极因素变为积极因素,丰富了通信实体的行为。另一方面,协作通信在过去的十数年间取得了长足的发展。本项目将研究协作通信和物理层安全技术的结合,研究以系统保密容量为设计和优化目标的协作中继和协作干扰技术,提出协作节点的"中继/干扰"自适应角色选择方案设计,提升无线协作通信系统的保密容量。此外,现实系统中较难获得完美的与窃听节点相关的信道状态信息,因此,本项目将重点研究部分信道状态信息下的协作中继和协作干扰方案设计。
中文关键词: 窃听信道;保密容量;安全通信;;
英文摘要: Security is one of the most important measurements of the communication systems. The broadcasting and mobility characters of the wireless communication systems bring up a huge challenge of their security. Recently, the development of the physical layer techniques and the uniqueness and reciprocity of the wireless channels give rise to the physical layer security research, which is currently an attractive research topic. In physical layer security, the cooperative jamming technique is a great break, since it turns the jamming signals into a positive factor of the system secrecy capacity and increases the behaviors of cooperative nodes. On the other hand, the cooperative communication technique has attained great improvement in the past ten years. In this program, we will investigate the combination of cooperative communication and physical layer security. The cooperative relaying and jamming schemes aimed to enhance the system secrecy capacity will be proposed. Adaptive relaying/jamming schemes of the cooperative nodes will also be investigated. The cooperative relaying/jamming schemes with partial channel state information will be an important part of this program since the perfect channel information related to the eavesdroppers is difficult to obtain.
英文关键词: wiretap channel;securcy capacity;secure communication;;