The MAC protocol of a cognitive radio (CR) device should allow it to access unused or under-
utilized spectrum without (or with minimal) interference to primary users dynamically. To …

A number of algorithmic and protocol assumptions taken for granted in the design of existing
wireless communication technologies need to be revisited in extending their scope to the …

In this paper, we propose a channel-hopping MAC protocol called dynamic hopping MAC
(DH-MAC) to improve the utilization of spectrum in cognitive radio networks. In DH-MAC …

Radio spectrum resource is of fundamental importance for wireless communication. Recent
reports show that most available spectrum has been allocated. While some of the spectrum …

Recently, cognitive radio technology has attracted more and more attention since it is a
novel and effective approach to improve the utilization of the precious radio spectrum. We …

Cognitive radio technology has emerged as the novel and effective approach to improve the
utilization of precious radio spectrum. Employing the cognitive radio technology, secondary …

We present a MAC protocol for opportunistic spectrum access (OSA-MAC) in cognitive
wireless networks. The proposed MAC protocol works in a multi-channel environment which …

Cognitive networks enable efficient sharing of the radio spectrum. Multi-hop cognitive
network is a cooperative network in which cognitive users take help of their neighbors to …

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 …

A cognitive radio (CR) network should be able to sense its environment and adapt
communication to utilize the unused licensed spectrum without interfering with licensed …