PAPR Reduction of OFDM with DFT Spreading Method

Future communication systems will demand the transmission of huge amounts data, therefore require a highly linear power amplifier. The Orthogonal Frequency Division Multiplexing (OFDM) technique is widely used in multimedia services for providing high data rates and Quality Service. transmitter amplifier's range operation system linear. Signal distortion happens when input signal's amplitude exceeds Therefore, transmitter's signal has to have low peak average ratio (PAPR). OFDM been recognized as rate wireless radio channel transmission. it also be beneficial high-speed system. However, due extremely PAPR issue, using not simple. It results efficiency. crucial lower order employ By discrete Fourier matrix, Discrete Transform spreading strategy may significantly an signal. This paper describes reduction approach signals examines effectiveness OFDM.