In this paper, we consider coexistence of secondary and primary users who share particular
portions of the spectrum and propose a delay-constrained power and rate allocation scheme …

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 …

In this paper, we consider a cognitive radio (CR) network where a secondary (cognitive)
user shares the spectrum for transmission with a primary (non-cognitive) user over block …

In this paper, we study the optimal power allocation strategies to achieve the delay-limited
capacity and outage capacity for fading channels in cognitive radio networks considering …

This paper investigates the problem of spectrally efficient operation of a multiuser uplink
cognitive radio system in the presence of a single primary link. The secondary system …

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 …

In this paper, we investigate the problem of spectrally efficient operation of a cognitive radio,
also called secondary spectrum user, under an interference from the primary system. A …

Due to the highly-stochastic nature of wireless channels, how to provide efficient delay
quality-of-service (QoS) provisioning for primary users (PU) while optimizing the …

This paper considers a spectrum sharing based cognitive radio network where a M-user
fading multiple access network shares the same spectrum with an existing primary network …

A cognitive radio network (CRN) is formed by either allowing the secondary users (SUs) in a
secondary communication network (SCN) to opportunistically operate in the frequency …