Secure layered transmission in multicast systems with wireless information and power transfer

Derrick Wing Kwan Ng, Robert Schober, Hussein Alnuweiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Citations (Scopus)

Abstract

This paper considers downlink multicast transmit beamforming for secure layered transmission systems with wireless simultaneous information and power transfer. We study the power allocation algorithm design for minimizing the total transmit power in the presence of passive eavesdroppers and energy harvesting receivers. The algorithm design is formulated as a non-convex optimization problem. Our problem formulation promotes the dual use of energy signals in providing secure communication and facilitating efficient energy transfer. Besides, we take into account a minimum required power for energy harvesting at the idle receivers and heterogeneous quality of service (QoS) requirements for the multicast video receivers. In light of the intractability of the problem, we reformulate the considered problem by replacing a non-convex probabilistic constraint with a convex deterministic constraint which leads to a smaller feasible solution set. Then, a semidefinite programming relaxation (SDR) approach is adopted to obtain an upper bound solution for the reformulated problem. Subsequently, sufficient conditions for the global optimal solution of the reformulated problem are revealed. Furthermore, we propose two suboptimal power allocation schemes based on the upper bound solution. Simulation results demonstrate the excellent performance and significant transmit power savings achieved by the proposed schemes compared to isotropic energy signal generation.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Communications, ICC 2014
PublisherIEEE Computer Society
Pages5389-5395
Number of pages7
ISBN (Print)9781479920037
DOIs
Publication statusPublished - 1 Jan 2014
Event2014 1st IEEE International Conference on Communications, ICC 2014 - Sydney, NSW
Duration: 10 Jun 201414 Jun 2014

Other

Other2014 1st IEEE International Conference on Communications, ICC 2014
CitySydney, NSW
Period10/6/1414/6/14

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ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Ng, D. W. K., Schober, R., & Alnuweiri, H. (2014). Secure layered transmission in multicast systems with wireless information and power transfer. In 2014 IEEE International Conference on Communications, ICC 2014 (pp. 5389-5395). [6884178] IEEE Computer Society. https://doi.org/10.1109/ICC.2014.6884178