Combining Clipping and Channel Coding for Effective PAPR Reduction in OFDM System with GNU Radio-USRP

The high value of Peak to Average Power Ratio (PAPR) is one of the problems in modulation schemes such as Orthogonal Frequency Division Multiplexing (OFDM). It will trigger negative impacts such as being susceptible to non-linear distortion and increasing the bit error rate resulting in degraded signal quality. This research uses innovative methods of clipping and channel coding to reduce the PAPR value in the performance of Digital Video Broadcasting - Terrestrial (DVB-Terrestrial) systems. The main focus of this research is OFDM, with evaluation of various performance metrics such as PAPR value, Complementary Cumulative Distribution Function (CCDF), Bit Error Rate (BER) and 64-QAM constellation diagram. This research involves a comprehensive analysis of clipping and channel coding methods, integrated with DVB-Terrestrial systems, and implemented using Software-Defined Radio (SDR). As a versatile transceiver, SDR is comprised of two components: GNU Radio for software and Universal Software Radio Peripheral (USRP, herein referred to as USRP N2920) for hardware. The purpose of this work is to construct a transmitter and receiver for Digital Video Broadcasting - Terrestrial/Satellite (DVB-T/T2/S/S2) using the 64 QAM modulation technology. The video is then broadcast in real-time on GNU Radio and USRP. The results of this simulation and research are presented in the form of analysis of the resulting PAPR value, OFDM DVBT frequency spectrum, OFDM DVBT constellation diagram, and bit error rate (BER) value.