MIMO Beamforming for Secure and Energy-Efficient Wireless Communication

Nguyen T. Nghia, Hoang D. Tuan, Quang Duong, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
293 Downloads (Pure)


Considering a multiple-user multiple-input multipleoutput (MIMO) channel with an eavesdropper, this letter develops a beamformer design to optimize the energy efficiency in terms of secrecy bits per Joule under secrecy quality-of-service constraints. This is a very difficult design problem with no available exact solution techniques. A path-following procedure, which iteratively improves its feasible points by using a simple quadratic program of moderate dimension, is proposed. Under any fixed computational tolerance the procedure terminates after finitely many iterations, yielding at least a locally optimal solution. Simulation results show the superior performance of the obtained algorithm over other existing methods.
Original languageEnglish
Number of pages5
JournalIEEE Signal processing Letters
Early online date05 Jan 2017
Publication statusEarly online date - 05 Jan 2017


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