This paper considers the artificial noise (AN) scheme, proposed by Goel and Negi for
securing wireless communications over multiple-input multiple-output multiantenna …

This paper investigates the power allocation problem for artificial noise (AN) secure
precoding systems, and proposes closed-form solutions for maximizing the achievable …

We consider secure communications over MIMO wiretap channels, in the presence of a
passive eavesdropper with an unlimited number of antennas. In this scenario, we …

The artificial noise (AN) scheme, proposed by Goel and Negi, is being considered as one of
the key enabling technology for secure communications over multiple-output multiple-input …

Security and privacy have become increasingly critical demands in wireless networks,
which, however, are particularly susceptible to eavesdropping attacks due to the broadcast …

This correspondence paper studies how correlation of the wiretap channel affects the
secrecy rate of the artificial noise (AN) scheme. To this end, we first develop a simple but …

This paper provides a closed-form expression for the secrecy capacity of the multiple-input
multiple output (MIMO) Gaussian wiretap channel, under a power-covariance constraint …

We consider the problem of secure communication with multiantenna transmission in fading
channels. The transmitter simultaneously transmits an information-bearing signal to the …

In this paper, we study the secure multiantenna transmission with artificial noise (AN) under
imperfect channel state information (CSI) in the presence of spatially randomly distributed …

We consider the problem of secure communication in the multiuser downlink with an
external eavesdropper. The transmitter simultaneously transmits concurrent information …