Initial efforts on wireless power transfer (WPT) have concentrated toward long-distance
transmission and high power applications. Nonetheless, the lower achievable transmission …

The increasing number of mobile users has given impetus to the demand for high data rate
proximity services. The fifth-generation (5G) wireless systems promise to improve the …

This monograph presents a unified framework for energy efficiency maximization in wireless
networks via fractional programming theory. The definition of energy efficiency is introduced …

Among the LTE-A communication techniques, Device-to-Device (D2D) communication
which is defined to directly route data traffic between spatially closely located mobile user …

Analogous to the way humans use the Internet, devices will be the main users in the Internet
of Things (IoT) ecosystem. Therefore, device-to-device (D2D) communication is expected to …

A constant need to increase the network capacity for meeting the growing demands of the
subscribers has led to the evolution of cellular communication networks from the first …

Intelligent transportation systems (ITS) are becoming a crucial component of our society,
whereas reliable and efficient vehicular communications consist of a key enabler of a well …

The number of devices is expected to radically increase in near future, with an estimate of
above 50 billion connected devices by 2020. The subscribers demand improved data rates …

Device-to-device (D2D) communication enables the user equipments (UEs) located in close
proximity to bypass the cellular base stations (BSs) and directly connect to each other, and …

Device-to-device communication underlaying cellular networks allows mobile devices such
as smartphones and tablets to use the licensed spectrum allocated to cellular services for …