… the problem of secure communication with multi-antenna transmission in fading channels. …
an achievable secrecy rate, and use it as the objective function to optimize the transmit power …

… Specifically, we consider secure downlink transmission in a … We investigate the resulting
achievable ergodic secrecy rate … matrix, where the AN is transmitted in the null space of the …

… and the maximum achievable rate takes a simple closed form. Meanwhile, we also find that
the maximum achievable rate scales with the logarithm of the number of transmit antennas. …

… to improve the legitimate users’ achievable secrecy rate. By taking into account … achievable
secrecy rate per energy consumption unit, by jointly optimizing the UAV trajectory, transmit …

… a framework for the artificial noise assisted secure transmission in multiple-input, multiple…
and feedback, we define the achievable effective ergodic secrecy rate (ESR), and investigate a …

… Note that the throughput maximization provided in this paper only gives an achievable
bound on the throughput of secure transmission. In what follows, we consider the …

… and an eavesdropper whose transmit informations are not completely known… transmit
beamforming, we aim to maximize the system achievable rate by jointly designing the BS’s transmit …

… In general, changing the order of optimization will result in a different rate region. To show
how the order of precoding can change the achievable rate region, we demonstrate an …

… the achievable security rate region of secure buffer-… secure sum-rate maximization problem
was formulated to derive the average achievable secrecy rate region, where transmission …

… that from the secure transmission point of view, the DAC distortion acts as, in some sense,
a special type of AN sequence since it can hamper the achievable rates of MTs and Eves …