The popularity of smart mobile devices has brought significant growth of data services for
mobile service providers. Mobile users of data services are charged based on the amount of …

Continuous evaluation in Vehicular Ad-hoc Networks (VANET) will contribute to spectrum
scarcity problem in near future. Cognitive radio (CR) system aims to provide opportunistic …

The rapid growing of wireless multimedia applications increases the needs of spectrum
resources, but today's spectrum resources have become more and more scarce and large …

Non-orthogonal multiple access (NOMA) has attracted both academic and industrial interest
since it has been considered as one of the promising 5G technologies in order to increase …

The high mobility of automobiles causes channel estimation uncertainties in vehicle-to-
vehicle (V2V) communications. Moreover, scarce spectrum resources further bottlenecked …

In this paper, we investigate the Energy Efficiency (EE)-Spectrum Efficiency (SE) tradeoff
issue in an OFDM-based cognitive radio (CR) network. A multi-objective resource allocation …

Most of the resource allocation literature on the energy-efficient orthogonal frequency
division multiple access (OFDMA)-based wireless communication systems assume …

Taking full advantage of both heterogeneous networks and cloud access radio access
networks, heterogeneous cloud radio access networks (H-CRANs) are presented to …

In this paper, we study sustainable resource allocation for cloud radio access networks
(CRANs) powered by hybrid energy supplies (HES). Specifically, the central unit (CU) in the …

Cognitive radio (CR) is promising to improve spectrum efficiency. However, the performance
of the secondary users (SUs) is limited due to the channel fading and interference …