This dissertation investigates covert communication in dynamic wireless communication
environments. A key goal is to provide insight about the capabilities of a transmitter desiring …

Covert communication aims to shield the very existence of wireless transmissions in order to
guarantee a strong security in wireless networks. In this work, for the first time we examine …

This paper investigates covert communications with finite blocklength in the presence of
multiple randomly distributed wardens, which are modeled as a Poisson point process …

In future sixth-generation (6G) wireless applications, high levels of security and privacy are
expected due to the soaring volume of confidential and sensitive data. To achieve this …

In this letter, we investigate the covert communication in wireless networks with intelligent
reflecting surface (IRS), where the Gauss-Poisson process (GPP) is invoked to model the …

In this work, we consider a covert communication scenario, where a transmitter Alice
communicates to a receiver Bob with the aid of a probabilistic and uninformed jammer …

Fundamental limits of covert communication have been studied for different models of scalar
channels. It was shown that, over n independent channel uses, O (√ n) bits can transmitted …

In this work, we investigate a delay-constrained covert communication system wherein a
multi-antenna transmitter is considered for the first time. Under the assumption of Rayleigh …

In this chapter, we examine the performance gain achieved by deploying an IRS in covert
communications. To this end, we formulate the joint design of the transmit power and the IRS …

Inspired by the challenges of designing a robust, and undetectable covert channel, in this
paper we introduce a design methodology for timing covert channels that achieve provable …