A QoE-based cell range expansion scheme in heterogeneous cellular networks SCIENCE CHINA Information Sciences 58, 082313 (2015); A study of power allocation in multi-MRN aided multiuser networks SCIENCE CHINA Information Sciences 60, 022303 (2017); Joint subcarrier, code, and power allocation for parallel multi-radio access in heterogeneous wireless networks SCIENCE CHINA Information Sciences 57, 089301 (2014); Joint subcarrier and power allocation in uplink OFDMA systems based on stochastic game SCIENCE CHINA Information Sciences 53, 2557 (2010);. RESEARCH PAPER. SCIENCE CHINA Information Sciences
This paper considers a two-user multiple-input single-output (MISO) interference channel with confidential messages (IFC-CM), where the beamforming vectors at the two transmitters are jointly optimized using the closed-form Pareto-optimal parameterization. We prove that artificial noise cannot improve the secrecy rate performance, and coordinated beamforming is secrecy-rate optimal which is achieved by agreeing on the parameters between the two transmitters. We analyze the feasible set of the beamforming parameters that guarantees positiveness of the secrecy rates when the transmitters know only statistical CSI, and then analysis in the ergodic secrecy rate region is discussed. More importantly, we derive the closed form of the ergodic secrecy rates and illustrate the Pareto-optimal structure of the beamforming vectors.
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