Installation Uncertainty of Field Level Calculation around a Base Station Antenna

Installation Uncertainty of Field Level Calculation around a Base Station Antenna

In the near field, the antenna pattern provided by the antenna manufacturer is generally not applicable, or should be considered with caution, even for the single antenna in free space. In the real life, antenna is often surrounded by other conductive objects in the immediate vicinity. These objects tend to distort the antenna radiation pattern. Since the electromagnetic field calculation for t...

Field Trial with a Gsm/dcs1800 Smart Antenna Base Station

We present measurement results with a GSM1800 smart antenna base station. The base station is equipped with an adaptive antenna array processor that allows in every GSM frame full beam adaptation in uplink and downlink. The smart antenna processing is based on the estimation of the directions of arrival in uplink. It includes separate DOA trackers for uplink and downlink, angular diversity, and...

Base station antenna selection for LTE networks

High Capacity Adaptive Base-station Antenna Systems

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 Base Station Smart Antenna System for CDMA Cellular

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...