| Title | An improved cooperative jamming strategy for PHY security in a multi-hop communications system |
| Publication Type | Conference Paper |
| Year of Publication | 2017 |
| Authors | Cao, C., Zhang, H., Lu, T., Gulliver, T. A. |
| Conference Name | 2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) |
| Keywords | array signal processing, beamforming, composability, cooperative jamming (CJ), eavesdropper, jamming, Metrics, multi-hop communications, physical layer (PHY) security, privacy, pubcrawl, Relays, Resiliency, secrecy capacity, security, signal processing security, simulation, spread spectrum communication, Wireless communication |
| Abstract | In this paper, an improved cooperative jamming (CJ) strategy is developed for physical layer (PHY) security in a multi-hop wireless communication system which employs beamforming in the last hop. Users are assigned to independent groups based on the merger-and-split rule in a coalition game. The secrecy capacity for a valid coalition is a non-convex optimization problem which cannot easily be solved. Therefore, restrictions are added to transform this into a convex problem, and this is solved to obtain a suboptimal closed-form solution for the secrecy capacity. Simulation results are presented which show that the proposed strategy outperforms other methods such as non-cooperation, relay cooperation, and previous CJ approaches in terms of the secrecy capacity. Further, it is shown that the proposed multi-hop solution is suitable for long distance communication systems. |
| DOI | 10.1109/PACRIM.2017.8121886 |
| Citation Key | cao_improved_2017 |
An improved cooperative jamming strategy for PHY security in a multi-hop communications system