Cognitive radio (CR) is a promising wireless technology that provides efficient spectral
usage. Medium Access Control (MAC) has an important role in several cognitive radio …

Dynamic spectrum access (DSA) is an important design aspect for cognitive radio networks.
Most of existing DSA schemes are to govern unlicensed user (ie, secondary user, SU) traffic …

Design of an efficient medium access control protocol is critical for proper functioning of a
distributed cognitive radio network and better utilization of the channels not being used by …

Heterogeneous networks raise the challenge on ubiquitous connections among
heterogeneous devices and networking protocols. As a promising approach to meet this …

The core of cognitive radio paradigm is to introduce cognitive devices able to
opportunistically access the licensed radio bands. The coexistence of licensed and …

A new opportunistic cross‐layer MAC protocol involving channel allocation and packet
scheduling for cognitive radio networks is proposed. Cognitive radio allows secondary users …

Interference, which can be caused by Secondary Users (SUs) to other Primary Users (PUs)
or SUs, is of major concern for Cognitive Radio Networks (CRNs). We study a spectrum …

In wireless communication systems, the delay remains a crucial factor. In this work, we focus
on the design of a new opportunistic cross-layer MAC protocol involving channels allocation …

Dynamic spectrum access through Cognitive Radio Networks (CRNs) and exploiting
multiple radios on a single node are two different well accepted techniques for enhancing …

The idea to allow unlicensed users to utilize licensed bands whenever it would not cause
any interference is one of the fundaments of cognitive radio. In this paper we propose some …