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Truth-Telling Mechanism for Two-Way Relay Selection for Secrecy Communications With Energy-Harvesting Revenue

Khandaker, MRA; Wong, K-K; Zheng, G; (2017) Truth-Telling Mechanism for Two-Way Relay Selection for Secrecy Communications With Energy-Harvesting Revenue. IEEE Transactions on Wireless Communications , 16 (5) pp. 3111-3123. 10.1109/TWC.2017.2675402. Green open access

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Abstract

This paper brings the novel idea of paying the utility to the winning agents in terms of some physical entity in cooperative communications. Our setting is a secret two-way communication channel where two transmitters exchange information in the presence of an eavesdropper. The relays are selected from a set of interested parties, such that the secrecy sum rate is maximized. In return, the selected relay nodes' energy harvesting requirements will be fulfilled up to a certain threshold through their own payoff so that they have the natural incentive to be selected and involved in the communication. However, relays may exaggerate their private information in order to improve their chance to be selected. Our objective is to develop a mechanism for relay selection that enforces them to reveal the truth since otherwise they may be penalized. We also propose a joint cooperative relay beamforming and transmit power optimization scheme based on an alternating optimization approach. Note that the problem is highly non-convex, since the objective function appears as a product of three correlated Rayleigh quotients. While a common practice in the existing literature is to optimize the relay beamforming vector for given transmit power via rank relaxation, we propose a second-order cone programming-based approach in this paper, which requires a significantly lower computational task. The performance of the incentive control mechanism and the optimization algorithm has been

Type: Article
Title: Truth-Telling Mechanism for Two-Way Relay Selection for Secrecy Communications With Energy-Harvesting Revenue
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TWC.2017.2675402
Publisher version: http://dx.doi.org/10.1109/TWC.2017.2675402
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Keywords: Science & Technology, Technology, Engineering, Electrical & Electronic, Telecommunications, Engineering, Cooperative beamforming, energy harvesting, mechanism design, secrecy, two-way relay, PHYSICAL-LAYER SECURITY, SIMULTANEOUS WIRELESS INFORMATION, ARTIFICIAL-NOISE, POWER TRANSFER, OPTIMIZATION, EAVESDROPPERS, PROTOCOLS, NETWORKS, CHANNELS, SYSTEMS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1558647
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