Ultra Wideband (UWB) system uses extremely low signal power to coexist with other primary
users (PUs), which limits the use of the UWB's wide spectrum band. Cognitive Radio (CR) …

In this paper, we study resource allocation for a multicarrier-based cognitive radio (CR)
network. More specifically, we investigate the problem of secondary users' energy-efficiency …

Cognitive satellite communications (SatCom) is considered to be able to alleviate the
bottleneck of spectrum resource shortage due to traditional spectrum allocation. This paper …

In this paper, we investigate the energy-efficient resource allocation in orthogonal frequency
division multiplexing (OFDM)-based cognitive radio (CR) networks, where we try to …

The deployment of unmanned aerial vehicle (UAV)-enabled cognitive radio system in the
area covered by primary network is studied in this letter. The UAV shares the spectrum with …

Cognitive radio networks (CRNs) are expected to improve spectrum utilization efficiently by
allowing secondary users (SUs) to opportunistically access the licensed spectrum of primary …

Present-day wireless methods are necessary to support a variety of higher-speed data
communication facilities for its subscribers such as cloud-based video streaming facilities …

Current advancements in vehicular networking lead to amplifying the issue of spectrum
scarcity. Cognitive radio (CR) has emerged as the key technology that enables flexible …

To solve the problem of low throughput and fairness in cognitive vehicular networks, we
establish a multi-objective spectrum allocation model to maximize the average throughput …

Cognitive Radio (CR) is an attractive technology to deal with current spectrum scarcity
problem, while cooperative relay can make distributed receivers benefit from spatial diversity …