Unmanned aerial vehicles (UAVs) have found widespread commercial, civilian, and military
applications. Wireless communication has always been one of the core technologies for …

The increasing demand for wireless Internet of Things (IoT) calls for power efficient RF
energy harvesting approach. The current dominant single-band RF energy harvesting front …

This chapter presents the practical application of low‐cost printed‐circuit frequency‐
scanning antennas for efficient wireless networks with smart functionalities. The design …

Long Range (LoRa) is a popular technology used to construct Low-Power Wide-Area
Network (LPWAN) networks. Given the popularity of LoRa it is likely that multiple …

Directional antennas in wireless sensor networks (WSNs) have several advantages
including the enhanced capacity of the network, longer range of transmission, better spatial …

Accurate path loss prediction models are indispensable in modern wireless communication
systems. In recent times, several path loss prediction models have been proposed to …

Path loss prediction models are vital for accurate signal propagation in wireless channels.
Empirical and deterministic models used in path loss predictions have not produced optimal …

Being often deployed in remote or hostile environments, wireless sensor networks are
vulnerable to various types of security attacks. A possible solution to reduce the security …

In this paper, we investigate the secure transmission in two-way untrusted amplify-and-
forward relay networks with simultaneous wireless information and power transfer (SWIPT) …

There have been substantial technical and policy discussions about the spectrum needs of
5G and the necessity of expanding access to higher frequency spectrum, including in the …