The deployment of cellular systems is a success and as the number of subscribers grows, service providers may experience capacity problems due to limited frequency spectrum. Consequently, service providers need to find methods to enhance the coverage and capacity of their networks. Today’s systems are optimally designed for supporting speech traffic in circuit-switched services. The introductio...

A printed dipole antenna integrated with a duplex RF switch used for mobile base station antenna beam steering is presented. A coplanar waveguide to coplanar strip transition was adopted to feed the printed dipole. A novel RF switch circuit, used to control the RF signal fed to the dipole antenna and placed directly before the dipole, was proposed. Simulated and measured data for the CWP-to-CPS...

As a result of dense installations of public mobile base station, additional electromagnetic radiation occurs in the living environment. In order to determine the level of radio-frequency radiation generated by base stations, extensive electromagnetic field strength measurements were carried out for 664 base station locations. Base station locations were classified into three categories: indoor...

Adaptive antenna arrays can increase the capacity of wireless mobile communication systems by reducing cochannel interference. This thesis reviews current base station technology and examines the possibility of implementing an adaptive phased antenna array at a cellular CDMA base station. It is seen that a computationally simple beamforming system and direction-of-arrival estimator can signific...

In this paper, we present a configuration of wideband MIMO antenna array for 5G terminals. The single-element has compact size, dual polarization, wide operating bandwidth covering the N78 frequency band, and high isolation between two input ports (>40 dB). 4×1 radiation sub-array low mutuality spatial diversity characteristics over entire range. large-scale with single 4×8 can provide 8 ind...

The MC-CDMA (multi-carrier code division multiple access) technique is known to be appropriate for high data-rate wireless communications such as mobile multimedia communication due to its robustness to multipath fading and its capability of handling high data rates with a simple onetap equalizer. In this paper, the performance of an MC-CDMA system employing antenna array at the base station in...

Over the last few years, the use of fiber optic cable in place of more conventional coaxial cable has become viable in many applications due to advances in analog fiber technology. This paper presents Fiber-to-BTS i.e. Fiber in Base station Applications, a new system for feeding radio frequency (RF) signals from either the base station controller (BSC) or base transceiver station (BTS) directly...

In this paper, a vector channel madel is pposed and some statistical pmperties of the asymptotic efficiency of the decorrelating detector with base-station awys are investigated. It is shown that we can get gain over the conventional deamlator by employing antenna arrays and the gain i n " s as the number of antennas inneases and the angle dispersion It is also shown that we can increase the as...

In this paper, a design of CELL band dual polarized base station antenna having air dielectric substrates has been proposed. The study of dual polarized base station antenna and their radiation properties including return loss, isolation, beam width, directivity, and radiation patterns for a single element are discussed. The antenna has a relative bandwidth of 31.7% (VSWR<1.4) with return loss ...