Connectivity of cognitive radio ad hoc networks with directional antennas

Y Wang, Q Wang, HN Dai, H Wang, Z Shi - Wireless Networks, 2018 - Springer
In cognitive radio ad hoc networks, omni-directional antennas are typically used at both
primary users (PUs) and secondary users (SUs), which can cause high interference. We …

On local connectivity of cognitive radio ad hoc networks with directional antennas

Y Wang, Q Wang, HN Dai, H Wang… - 2016 IEEE …, 2016 - ieeexplore.ieee.org
In conventional cognitive radio ad hoc networks, both primary users (PUs) and secondary
users (SUs) are typically equipped with omni-directional antennas, which can cause high …

[HTML][HTML] Impact of beamforming on the path connectivity in cognitive radio ad hoc networks

LT Dung, TD Hieu, SG Choi, BS Kim, B An - Sensors, 2017 - mdpi.com
This paper investigates the impact of using directional antennas and beamforming schemes
on the connectivity of cognitive radio ad hoc networks (CRAHNs). Specifically, considering …

Connectivity of underlay cognitive radio networks with directional antennas

Q Wang, HN Dai, O Georgiou, Z Shi… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
In underlay cognitive radio networks (CRNs), the connectivity of secondary users (SUs) is
difficult to be guaranteed due to the existence of primary users. Most prior studies only …

A modeling framework for supporting and evaluating connectivity in cognitive radio ad hoc networks with beamforming

LT Dung, B An - Wireless Networks, 2017 - Springer
In this paper, we present an analytical modeling framework for supporting and evaluating
the impact of shadowing and beamforming on the topological connectivity of cognitive radio …

How does beamforming influence the connectivity of cognitive radio ad-hoc networks?

TD Hieu, B An, BS Kim - 2016 International Symposium on …, 2016 - ieeexplore.ieee.org
In this paper, we investigate the impact of using directional antennas and beamforming
schemes on the connectivity of cognitive radio ad-hoc networks (CRAHNs). Specifically …

Local connectivity of cognitive radio ad hoc networks

D Zhai, M Sheng, X Wang… - 2014 IEEE Global …, 2014 - ieeexplore.ieee.org
We investigate the local connectivity of cognitive radio ad hoc networks (CRAHNs), ie, node
degree and probability of node isolation. The local connectivity of CRAHNs depends on not …

Simulation modeling and analysis of the hop count distribution in cognitive radio ad-hoc networks with beamforming

SG Choi - Simulation Modelling Practice and Theory, 2018 - Elsevier
Due to the spatial–temporal spectrum mobility in cognitive radio ad-hoc networks
(CRAHNs), multi-hop communication paths among secondary users have to detour or even …

[HTML][HTML] Connectivity analysis of cognitive radio ad-hoc networks with multi-pair primary networks

L The Dung, SG Choi - Sensors, 2019 - mdpi.com
In this paper, we study the connectivity of cognitive radio ad-hoc networks (CRAHNs) where
primary users (PUs) and secondary users (SUs) are randomly distributed in a given area …

Connectivity of large-scale cognitive radio ad hoc networks

D Lu, X Huang, P Li, J Fan - 2012 Proceedings IEEE INFOCOM, 2012 - ieeexplore.ieee.org
Connectivity of large-scale wireless networks has received considerable attention in the past
several years. Different from traditional wireless networks, in Cognitive Radio Ad-hoc …