Joint Power Allocation and Match Access for Physical Layer Security of Heterogeneous Network

Shiwei Yan; Yong Shang; Xiguang Zhang

doi:10.31130/jst.2017.58

Shiwei Yan School of Electrical Engineering and Computer Science, Peking University, Beijing, China
Yong Shang School of Electrical Engineering and Computer Science, Peking University, Beijing, China
Xiguang Zhang School of Electrical Engineering and Computer Science, Peking University, Beijing, China

DOI: https://doi.org/10.31130/jst.2017.58

Abstract

In this paper, we investigate the Physical Layer Security (PLS) of a multiple friendly jammers and multiple users wireless system in Device-to-Device (D2D) communications underlaying cellular networks with an eavesdropper. The aim is to maximize the increase of secrecy capacity of the entire system through optimal power allocation and jamming matching under various practical constraints. Firstly, the total increase secrecy capacity of D2D pairs with the help of jamming is derived, then we obtain optimal jamming power for each D2D pair and formulate the D2D pairs and jammers matching problem in the weighted bipartite graph via designing the Kuhn-Munkres (KM) algorithm. Finally, numerical results demonstrate that our scheme could greatly improve the secrecy performance of heterogeneous D2D and cellular networks.

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