Small cell base stations (SBSs) and multiple antennas are seen as fundamental
technologies in the emergence of the next generation [ie, 5th generation (5G)] of cellular …

Heterogeneous networks using a mix of macrocells and small cells are foreseen as one of
the solutions to meet the ever increasing mobile traffic demand. Nevertheless, a massive …

Device-to-device (D2D) communications and femtocell systems are the key technology in
the 4G LTE-A. Both D2D and femtocell systems can offload the traffic from macrocell …

In this paper, we consider a cognitive radio system, consisting of a primary user (PU), a
secondary user (SU) transmitter, and a SU receiver. The SUs are equipped with directional …

This study presents an efficient fractional frequency reuse scheme for macrocell network
which uses six directional antennas to cover the outer region and analyses the performance …

An optimal synthesis of a wideband log-periodic dipole array (LPDA) is introduced in this
paper. The LPDA optimization is performed under several requirements concerning the …

This paper presents a sequentially rotated quad-element, triple-band MIMO antenna,
operating in the sub 6 GHz frequency band. The individual antenna elements have three …

We study the benefits that antenna directivity and power control can bring to a cognitive
radio ad hoc network, in terms of concurrent transmission probability, throughput and energy …

Small cell networks are widely considered as an efficient low-cost solution to enhance the
coverage and capacity of cellular layers on top of being environmentally friendly due to their …

A mircostrip antenna is designed for multielement antenna coverage optimization in
femtocell network. Interference is the foremost concern for the cellular operator in vast …