Performance Analysis of PAPR reduction in OFDM on USRP-SDR platform

Abstract: Numerous compression strategies have been developed as a result of the work of different researchers. It has been observed that a signal's entropy has an impact on its compressibility. If there are few coefficients in the energy distribution, compressibility is high. This paper focused on peak to average power ratio (PAPR) reduction scheme for OFDM system. OFDM has several properties which make it an attractive modulation scheme for high speed transmission. The main drawback of OFDM is high PAPR. The high PAPR causes the interference and degraded the performance of the system while OFDM signal pass through the amplifier. Here a simple scheme, clip and filter is used to reduce the PAPR of OFDM system. The compressed signal is transmitted and received using OFDM system. This process is carried out using Software Defined Radios (USRP-SDR)

Keywords: NISDR, PAPR, clipping and filtering method, partial transmit sequence technique and selective mapping technique.