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Secure Resource Allocation for OFDMA Two-Way Relay Wireless Sensor Networks Without and With Cooperative Jamming

Research output: Contribution to journalArticle

Haijun Zhang, Hong Xing, Julian Cheng, Arumugam Nallanathan, Victor Victor C.M. Leung

Original languageEnglish
Pages (from-to)1714-1725
JournalIEEE Transactions on Industrial Informatics
Volume12
Issue number5
Early online date12 Oct 2016
DOIs
Publication statusPublished - 12 Oct 2016

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  • Secure Resource Allocation_ZHANG_Publishedonline12October2017_GREEN AAM

    Haijun_Industrial_Informatics.pdf, 1 MB, application/pdf

    23/02/2016

    Accepted author manuscript

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King's Authors

Abstract

We consider secure resource allocations for orthogonal frequency division multiple access two-way relay wireless sensor networks. The joint problem of subcarrier assignment, subcarrier pairing and power allocations is formulated under scenarios of using and not using cooperative jamming to maximize the secrecy sum rate subject to limited power budget at the relay station and orthogonal subcarrier allocation policies. The optimization problems are shown to be mixed integer programming and non-convex. For the scenario without cooperative jamming, we propose an asymptotically optimal algorithm based on the dual decomposition method, and a suboptimal algorithm with lower complexity. For the scenario with cooperative jamming, the resulting optimization problem is non-convex, and we propose a heuristic algorithm based on alternating optimization. Finally, the proposed schemes are evaluated by simulations and compared to the existing schemes.

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