MIMO Beamforming for Secure and Energy-Efficient Wireless Communication

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

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Considering a multiple-user multiple-input multiple-output 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 (US)
Article number7807263
Pages (from-to)236-239
Number of pages4
JournalIEEE Signal Processing Letters
Issue number2
StatePublished - Feb 2017

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics


  • Energy efficiency (EE)
  • multipleinput multiple-output (MIMO) beamforming
  • secure communication


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