Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 17, Issue 6, Pages 3737-3751Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2018.2815626
Keywords
Interference network; secure communication; energy-efficient communication; power allocation; path-following algorithms
Funding
- Australian Research Council [DP130104617]
- King Fahd University of Petroleum and Minerals [SR161003]
- U.K. Royal Academy of Engineering Research Fellowship [RF1415/14/22]
- U.S. National Science Foundation [CNS-1702808, ECCS-1647198]
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Considering a multi-user interference network with an eavesdropper, this paper aims at the power allocation to optimize the worst secrecy throughput among the network links or the secure energy efficiency in terms of achieved secrecy throughput per Joule under link security requirements. Three scenarios for the access of channel state information are considered: the perfect channel state information; partial channel state information with channels from the transmitters to the eavesdropper exponentially distributed; and not perfectly known channels between the transmitters and the users with exponentially distributed errors. The paper develops various path-following procedures of low complexity and rapid convergence for the optimal power allocation. Their effectiveness and viability are illustrated through numerical examples. The power allocation schemes are shown to achieve both high secrecy throughput and energy efficiency.
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