In satellite communication downlinks, physical layer security is challenging to achieve due to
their broadcasting nature and Line-of-Sight channel characteristics. This paper provides a …

In this paper, we consider the problem of secure communications for a four-node system
consisting of one source, one destination, one eavesdropper, and one helper. We …

Secrecy rate achievability in three-node amplify-and-forward cooperative systems at the
presence of passive eavesdroppers without location information is statistically analyzed and …

Security is an important aspect for the future wireless networks. Since the number of network
nodes increases constantly, and, in addition, the networks are decentralized and ad-hoc in …

为提升移动通信系统的安全性, 研究了用户移动时的平均物理层安全容量. 在实际传播环境中,
用户移动会导致物理层安全容量在大范围内变化, 因此提出合法用户平均物理层安全容量以刻画 …

We consider a confidential communication system in which a source sends a confidential
information to the destination in the presence of an eavesdropper. Multiple relays are used …

The use of multiple network configurations for cooperative jamming with the aim to increase
the region with information-theoretic secrecy is analysed. The case with a single …

The use of cooperation to increase the information-theoretic secrecy in a decentralized ad-
hoc wireless network is investigated. In particular, four cases of cooperative relaying are …

To ensure security in data transmission is one of the most important issues for wireless relay
networks. In this paper, we consider a cooperative network, consisting of one source node …

Information-theoretic secrecy is combined with cryptographic secrecy to create a secret-key
exchange protocol for wireless networks. A network of transmitters, which already have …