… block fading channels, hence the fading … fading channels are considered, and the block
boundaries are synchronized among all the users. Due to the independent change of fading …

… static Rayleigh fading channels is examined in [15]. In this work, we explore the possibilities
and conditions of covert communications in quasi-static wireless fading channels, exploiting …

… We consider covert communications over the Rayleigh fading channel as shown in Fig. 1,
where Alice and Bob are legitimate users while Willie is a warden who tries to detect whether …

… improve covert communications. The authors in [29] have analyzed covert communications
… Willie, while covert communications over slow fading channels under finite blocklength has …

… channel uses are utilized. A covert communication system under block fading channels
was examined in [22], [23], where transceivers have uncertainty on the related channel state …

… Afterwards, we consider a worst-case covert communication scenario where W can always
adjust the detection threshold μ to fading channels and network geometry for improving its …

… Specifically, the covert principle and research … effective covert techniques in the existing
literature are reviewed. We also discuss the potential implementation of covert communications …

… Specifically, we address the problem of how to conduct covert communications without CSI
at a receiver in IoT with fading channels. To this end, we modify and then adopt the channel …

… Rayleigh block fading channels: the channel gains remain constant within a block of n symbols
(channel uses) … We assume that Alice can estimate the channel gains h1, ··· , hL perfectly …

… of channel correlation. In this paper, we consider the impact of the channel correlation in
an IRS-aided covert communication system… constraint and propose a channelcorrelation-aware …