Fifth generation (5G) cellular networks promise to support multi-radio access technologies
(multi-RATs) with low and high frequencies aiming at delivering good coverage, several …

Optimal capacity analysis in multi-radio multi-channel wireless networks by nature incurs the
formulation of a mixed integer programming, which is NP-hard in general. The current state …

Throughput maximization is a key challenge for wireless applications in cognitive Vehicular
Ad-hoc Networks (C-VANETs). As a potential solution, cooperative communications, which …

Cognitive Radio (CR) technology enables secondary users (SUs) to opportunistically access
unused licensed spectrum owned by the primary users (PUs). Therefore, it can potentially …

Cellular networks are faced with serious congestions nowadays due to the recent booming
growth and popularity of wireless devices and applications. Opportunistically accessing the …

Due to the emerging various data services, current cellular networks have been
experiencing a surge of data traffic and are already overloaded; thus, they are not able to …

In this paper, we develop an opportunistic spectrum-scheduling scheme for multichannel
cognitive radio networks. In the proposed scheme, the primary user activity and channel …

To alleviate the spectrum shortage for sensor networks with tremendous sensors, cognitive
radio technology enabling multi-hop opportunistic networking and concurrent transmissions …

Wireless mesh networks (WMNs) are considered to be an economical solution for last-mile
broadband Internet access. In this paper, we study end-to-end bandwidth allocation in …

Spectrum trading creates more accessing opportunities for secondary users (SUs) and
economically benefits the primary users (PUs). However, it is challenging to implement …