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 …

In this paper, we study the secure multi-antenna transmission with artificial noise (AN) under
slow fading channels coexisting with randomly located eavesdroppers. We provide a …

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

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

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

In this paper, the dimension of artificial noise (AN) and corresponding transmit power in
multiple-input multiple-output single-eavesdropper channels are investigated. It is widely …

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

Utilizing artificial noise (AN) is a good means to guarantee security against eavesdropping
in a multi-input multi-output system, where the AN is designed to lie in the null space of the …

In this letter, we address physical layer security in MISO communications in the presence of
passive eavesdroppers, ie, the eavesdroppers' channels are unknown to the transmitter …

We design a novel artificial-noise-aided secure ON-OFF transmission scheme in a wiretap
channel. We consider a practical scenario, where the multi-antenna transmitter only obtains …