Comparative Analysis of Various Modulation Techniques for LTE System

Abstract

Communication play very prime role in indivisual life. In short span of time we come across digital modulation techniques from analog modulation techniques. The basic criterion for most excellent modulation method depends on BER, Signal to Noise Ratio, accessible Bandwidth, Power efficiency, better QoS, cost effectiveness. Modulation techniques which are proficient of transmitting more bits per symbol are more vulnerable to error caused by noise. QAM and M-PSK are digital modulation techniques which are used for OFDM-LTE (4G) system. In this paper our main focus is to analyze BER of QAM and QPSK for different challen against various SNR to recognize a appropriate digital modulation technique for OFDM application. The research has been performed by using MATLAB SIMULINK for simulation and evaluation of Bit Error Rate (BER) and Signal-to-Noise Ratio (SNR) for OFDM system models