Author : Samiksha Awachat 1
Date of Publication :26th April 2018
Abstract: The process of changing some characteristics of waveform with respect to the characteristics of other waveform is called modulation. To reduce practical antenna length, improve radiation efficiency of an antenna and to increase the operating range this process is needed. In digital modulation techniques there are different schemes such as BPSK, QPSK, QAM, PAM etc. The study, analysis, simulation and implementation of these techniques on different platforms are necessary such as MATLAB/SIMULINK, GNU radio and hardware platform like USRP. In this paper we have discussed about two basic techniques BPSK & QPSK and evaluated their parameters like constellation plot and BER using GNU radio on USRP and compared it with MATLAB results
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