Abstract

The requirement for transmission systems which use software and hardware hybrid arrangement, recognized as\nSoftware Defined Radio (SDR), rises because of restricted channel capacity in wireless communication. The focus of this\npaper is to understand the basic methods for real time file transmission through an open source, flexible and low cost\nplatform – Universal Software Radio Peripheral (USRP) along with GNU radio. SDR is a technology in which software is\nchanged without varying the hardware to implement various communication applications. The GNU Radio along with USRP\nis a low cost, high speed SDR platform. GNU Radio is an open source software supporting SDR platform and USRP acts as\nthe hardware for GNU Radio. The main focus of this paper is on the implementation of PSK modulator and demodulator and\nevaluates the working and results of a file transfer using PSK modulation technique. The real time file signal transmission and\nreception is performed using USRP and GNU Radio.