The combination of nonorthogonal multiplex access and unmanned aerial vehicles (UAVs)
can improve the energy efficiency (EE) for Internet of Things (IoT). On the condition of …

The proliferation of unmanned aerial vehicles (UAV), ie, drones, in communication systems
has recently attracted both industry and academia. This is mainly due to their flexible …

Enhancing energy efficiency, content distribution, latency, and transmission speeds are vital
components of communication systems. Multiple access methods hold great promise for …

In this paper, an active-user cooperative scheme for overlay cognitive radio (OCR) vehicle-to-
vehicle (V2V) communication system based on three-dimensional (3D) channel model is …

Cooperative communication combining non-orthogonal multiple access (NOMA) and
cognitive radio is a rapidly growing technique for wireless networks and beyond 5G Still …

Unmanned aerial vehicles (UAVs) are considered an important component of 6G wireless
technology. However, there are many challenges to the employment of UAVs, one of which …

In this paper, in order to improve the performance of wireless fifth generation (5G)
communication system and save power consumption, the research objectives of optimal …

Non-orthogonal multiple access (NOMA) is a potential technology to support high network
density, while satisfying the quality of service (QoS) demands. To maximize the attainable …

Cognitive Radio (CR) is developed to provide effective spectrum usage. CR is much
significant in improving the efficiency of the global internet in applications. The evolutionary …

Applying aerial devices to collect data from terrestrial sensors is a research hotspot in recent
years. In this paper, we consider a novel system model that terrestrial sensors' data are first …