We study user cooperation to enhance the physical layer security. Specifically, the source
cooperates with friendly intermediate nodes to transmit message securely in the presence of …

In this paper, we consider a new cognitive radio network (CRN), where cooperative
beamforming is designed to enhance the physical-layer security for both primary users …

Spectrum auction is considered a suitable approach to efficiently allocate spectrum among
unlicensed users. In a typical spectrum auction, secondary users (SUs) bid to buy spectrum …

This paper investigates the secure communication issue for cognitive radio networks with
nonaltruistic users. The design objective is to improve the secrecy rate of the primary user …

Heterogeneous networking (HetNet) is a promising solution to meet the ever increasing
demands of wireless applications. However, it is a significant challenge for mobile network …

This paper investigates the secure information transfer issue for cognitive radio networks
that have multiple non-altruistic primary users, secondary users and eavesdroppers. The …

This brief examines current research on improving Vehicular Networks (VANETs),
examining spectrum scarcity due to the dramatic growth of mobile data traffic and the limited …

We study the achievable secure degrees of freedom (DoF) in a cooperative MIMO cognitive
radio system consisting of one primary source-destination pair, one or two secondary …

This paper investigates the game theory based cooperation method to optimize the PHY
security in both primary and secondary transmissions of a cognitive radio network (CRN) …

针对协作通信系统中信息安全传输这一问题, 在包括窃听节点的安全协作网络中,
提出一种基于信道判断的中继选择方法, 使用概率分布差异度量判断信道类型 …