ENHANCING THE PERFORMANCE OF ULTRA MOBILE BROADBAND NETWORK USING ADAPTIVE INTERFERENCE AND NOISE CANCELLING TECHNIQUE

Abstract

This paper focused on enhancing the performance of Ultra mobile broadband networks using Adaptive interference and noise cancelling technique. The test van used during the measurement was driven in the direction of one antenna sector, though there were overlaps from two sectors at some points. In addition, the Global Positioning System (GPS) was used to measure the distance between the base station and the mobile station, i.e., the transmitter–receiver (T-R) separation distances starting from 100m to several multiples of 100m. During the drive test, four numbers of functional base stations were seen and the ray tracer helped to pick the signal of the network of choice amongst several signals from various networks. This is achieved by setting the appropriate frequency on which the desired network operates. As the investigative base station operates at a frequency of 878.87MHz, the ray tracer helped to locate the base station that transmits at that particular frequency. However, the signal strengths of the signals were recorded at various points and the distance of these points from the reference point of the base station also recorded. Results obtained showed that using adaptive interference and cancelling technique yielded a bit error rate in the range of 10-2 to 10-3