This paper studies the information-theoretic limits of a secondary or cognitive radio (CR)
network under spectrum sharing with an existing primary radio network. In particular, the …

Green communications is an inevitable trend for future communication network design,
especially for a cognitive radio network. Power allocation strategies are of crucial …

We introduce a general adaptive coding scheme for Nakagami multipath fading channels.
An instance of the coding scheme utilizes a set of 2L-dimensional (2L-D) trellis codes …

In this paper, we analyze the capacity gains of opportunistic spectrum-sharing channels in
fading environments with imperfect channel information. In particular, we consider that a …

When adaptive modulation is used to counter short-term fading in mobile radio channels,
signaling delays create problems with outdated channel state information. The use of …

We investigate the effects of fading correlations on wireless communication systems
employing multiple antennas at both the receiver and the transmitter side of the link, so …

We consider the problem of transferring data with a xed level of reliability over a discrete
time channel whose characteristics vary with time, with a constraint on the average delay su …

A communication link aided by a Reconfigurable Intelligent Surface (RIS) is studied, in
which the transmitter can control the state of the RIS via a finite-rate control link. Prior work …

This paper studies the optimal power allocation for outage probability minimization in point-
to-point fading channels with the energy-harvesting constraints and channel distribution …

Ensuring the confidentiality of communications is fundamental to securing any network. This
requirement becomes particularly important for wireless systems, where eavesdropping is …