Max-min energy-efficient optimization for cognitive heterogeneous networks with spectrum sensing errors and channel uncertainties

Y Xu, M Yang, Y Yang, Y Ye, RQ Hu… - IEEE Wireless …, 2021 - ieeexplore.ieee.org
In this letter, we design a robust resource allocation algorithm for a non-orthogonal multiple
access (NOMA)-based cognitive heterogeneous network under spectrum sensing errors and …

Distributed resource allocation with imperfect spectrum sensing information and channel uncertainty in cognitive femtocell networks

X Huang, L Shi, C Zhang, D Zhang, Q Chen - EURASIP Journal on …, 2017 - Springer
To meet the ever-increasing demands of mobile traffic, femtocells are considered as one of
the promising solutions. In this paper, we study a sensing-based resource allocation …

Joint energy-efficient resource allocation and transmission duration for cognitive HetNets under imperfect CSI

Y Xu, Y Yang, Q Liu, Z Li - Signal Processing, 2020 - Elsevier
Cognitive heterogeneous network (CR-HetNet) has been deemed a promising technique to
improve spectral efficiency and system capacity. Designing effective resource allocation …

Robust resource allocation for multi-tier cognitive heterogeneous networks

Y Xu, Y Hu, Q Chen, T Song… - 2017 IEEE International …, 2017 - ieeexplore.ieee.org
How to improve system capacity and spectral efficiency is a key issue for next generation
wireless communication. Heterogeneous network (HetNet) has been considered as a new …

Energy‐efficiency resource allocation for cognitive heterogeneous networks with imperfect channel state information

J Chen, Y Zhou, Y Kuo - IET Communications, 2016 - Wiley Online Library
In this study, the authors focus on the downlink resource allocation to optimise energy‐
efficiency (EE) of orthogonal frequency division multiplexing‐based cognitive …

Distributed resource allocation for interference management and QoS guarantee in underlay cognitive femtocell networks

TM Ho, NH Tran, SMA Kazmi… - 2016 18th Asia-Pacific …, 2016 - ieeexplore.ieee.org
Cognitive femotcell networks can opportunistically access the licensed spectrum to enhance
spectrum utilization. However, interference management plays a crucial role to effectively …

Distributed resource allocation for cognitive HetNets with cross-tier interference constraint

Y Xu, Y Hu, Q Chen, R Chai, G Li - 2017 IEEE Wireless …, 2017 - ieeexplore.ieee.org
With the development of the fifth generation communication technology, how to improve
system capacity and spectral efficiency is a key issue, which has attracted more and more …

Resource allocation for cognitive radio-enabled femtocell networks with imperfect spectrum sensing and channel uncertainty

Y Zhang, S Wang - IEEE Transactions on Vehicular Technology, 2015 - ieeexplore.ieee.org
Deploying femtocells underlaying macrocells is a promising way to improve the capacity and
enhance the coverage of cellular systems. However, such a two-tier network also gives rise …

Optimal and robust interference efficiency maximization for multicell heterogeneous networks

Y Xu, G Li - IEEE Access, 2019 - ieeexplore.ieee.org
To improve energy efficiency and reduce the interference to macro users (MUs), this paper
investigates the robust resource allocation (RA) problem for maximizing the interference …

Robust rate maximization for heterogeneous wireless networks under channel uncertainties

Y Xu, Y Hu, G Li - Sensors, 2018 - mdpi.com
Heterogeneous wireless networks are a promising technology in next generation wireless
communication networks, which has been shown to efficiently reduce the blind area of …