Ultra-dense deployment of small cell networks is widely regarded as a key role to meet the
increasing demand for huge capacity of wireless communication systems. Meanwhile …

The nature and scope of online communication have changed as a result of more social
networking platforms. The social network has drawn a lot of attention in the last 10 years …

Traditionally, primary users (PUs) in cognitive radio networks typically work in frequency
division duplex or time division duplex mode, and secondary users (SUs) can protect PUs by …

This paper proposes a novel polarization-based underlay spectrum sharing scheme in
cognitive heterogeneous cellular network (CHCN). Distinguished from traditional spectrum …

Cognitive heterogeneous cellular network (CHCN), comprised of small cells overlaid with
macrocells, is a promising topology to fulfill the explosive demand for high-data-rate …

Research in spectrum availability and its effective utilisation is becoming an epicentre of
research in recent times with the increasing scarcity of radio spectrum. An effective solution …