Research Article
On the Conditioning Channel Capacity of MIMO Two-Way Relay Networks against Eavesdropper
@INPROCEEDINGS{10.4108/eai.15-8-2015.2260771, author={Jia You and Zhangdui Zhong and Feifei Gao and Gongpu Wang}, title={On the Conditioning Channel Capacity of MIMO Two-Way Relay Networks against Eavesdropper}, proceedings={10th EAI International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={9}, keywords={secure wireless communication security perfor- mance analysis multiple antenna two-way relay network noisy amplify-and-forward}, doi={10.4108/eai.15-8-2015.2260771} }- Jia You
Zhangdui Zhong
Feifei Gao
Gongpu Wang
Year: 2015
On the Conditioning Channel Capacity of MIMO Two-Way Relay Networks against Eavesdropper
CHINACOM
IEEE
DOI: 10.4108/eai.15-8-2015.2260771
Abstract
In this paper, we consider the two-way relay net- work (TWRN) in the presence of an eavesdropper, and construct a noisy amplify-and-forward (AF) algorithm to enhance the physical (PHY) layer security capacity. All the source nodes, the relay and the eavesdropper are equipped with multiple antennas. In the proposed noisy AF scheme, the relay first receives signals from both source nodes, adds weighted artificial noise (AN), and then amplifies and forwards the modified signal to both source nodes. In this scenario, we analyze the effects of AN and the number of relay antennas on the secrecy sum rate for different conditioning channel matrices. It is shown that AN will result in an increased secrecy sum rate, and the channel condition is a key parameter of the system in deciding the sum secrecy rate. Finally, simulation results demonstrate the validity of proposed studies.