Analysis of Least Mean Square Adaptive Beam forming Algorithm of the Adaptive Antenna for Improving the Performance of the CDMA20001X BaseMobile Radio Network

Abstract

This paper focused on improving the performance ofcode division multiple access 20001x base mobile radio network using Least Mean Square adaptive beamforming algorithm. Code division multiple access 20001x(CDMA20001x)ischosen astheplatformforthispapersinceithasbeenadoptedastheair-interfacetechnologyby the3Gwirelesscommunicationsystems.But,the performance of the CDMA20001x mobile radio network is limited by both multiple access interference and multipath fading. Thus, this paper concentrates on using adaptive antennas algorithm in minimizing the effect of multiple access interference and multipath fading in order to achieve greater performance on the network and accommodate more subscribers per base station. The result for the performance of CDMA20001x with various adaptive beamforming algorithms is simulated in Matlab.The simulation results show that LMS adaptivebeamforming algorithm achieved the desired maximum narrow beam towards the desired user and placed nulls on the interfering user in order to suppress the interfering signal.
DOI: 10.17762/ijritcc2321-8169.1505170