Cognitive radio networks (CRNs) are expected to be promising techniques for improving the
spectrum efficiency of wireless network utility in the squeezed sub-6-GHz frequency bands …

In this paper, we investigate dynamic channel and rate selection in cognitive radio systems
that exploit a large number of channels free from primary users. In such systems, transmitters …

Increasing spectrum-efficiency (SE) as well as energy-efficiency (EE) has attracted much
attention recently due to the fact that the future wireless networks need to address the issues …

This paper introduces a machine learning based collaborative multi-band spectrum sensing
policy for cognitive radios. The proposed sensing policy guides secondary users to focus the …

We consider a multichannel Cognitive Radio Network (CRN), where secondary users
sequentially sense channels for opportunistic spectrum access. In this scenario, the Channel …

Cognitive radio (CR) technology, which enables unlicensed secondary users to
opportunistically access the unused licensed spectrum, has attracted more and more …

This paper utilizes the cognitive radio (CR) spectrum to the fullest extent for extended
applications requiring discretion. The CR technology provides various supports for cognitive …

Researches on scheduling in cognitive radio (CR) networks (CRN) mostly focus on
spectrum efficiency before. With more portable devices supplied by energy-limited batteries …

In this paper, we address a cross-layer issue of long-term average utility maximization in
energy-efficient cognitive radio networks supporting packetized data traffic under the …

In this paper, we investigate the power and rate-control schemes for multiple cognitive radio
(CR) links in the same neighborhood, which operate over multiple channels (frequency …