"What we need to do is optimize transparency on these issues, but at the same time, optimize secrecy and the protection of our national security," he said.
His reporting helped make the drone issue part of the confirmation hearings, leading to this statement on Thursday to the Senate Intelligence Committee from Mr. Brennan, which sounded like a parody of Washington doublespeak: "What we need to do is optimize transparency on these issues, but at the same time, optimize secrecy and the protection of our national security".
The objective is to optimize the secrecy capacity under the constraints of maximal jamming power.
The source can be modeled as a buyer who wants to optimize its secrecy capacity minus cost by modifying the "service" (jamming power ) from the friendly jammers, that is, (4).
The ultimate goal of this work is to find the best partition (prod ) that could optimize the secrecy capacity of the MUEs while guarantee a good performance of the SBSs.
Robust transmit designs for multiple-input single-output (MISO) wiretap channels under both individual and global power constraints for the source and the helper were presented in [21], where transmit covariance matrices at the source and the helper were jointly optimized to maximize the secrecy rate.
Figure 10 Secrecy Rate, dB,, optimized over Figure 11 Secrecy Rate, dB, dB, optimized over, power control at the source node enabled.
Our objective is to maximize the achievable secrecy rate at the destination by jointly optimizing the transmit beamforming vector of information signals and the covariance matrix of jamming signals at the relay subject to its total transmit power constraint.
In this paper, we adopt the ACA-A mechanism [12] to optimize the relay power allocation to improve the system sum secrecy rate.
Taking into account the eavesdropper channel uncertainties, we attempt to maximize the worst-case secrecy rate (WCSR) at the receiver by jointly optimizing the information beamforming and energy covariance at the transmitter and the artificial noise (AN) covariance at the FD receiver, subject to the power constraint at the transmitter and the minimum energy required at the EH receiver.
This paper aims to jointly optimize the input covariance matrices of the multicast message, confidential message, and AN, to maximize the achievable secrecy and multicast rates simultaneously, or, equivalently, to maximize the achievable secrecy rate region.
