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PAPR Reduction in OFDM

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Svetislav Maric
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1 PAPR REDUCTION IN OFDM SYSTEMS USING COMPANDOR LAZAR VELIMIROVIC Mathematical Institute SASA, Belgrade, lazar.velimirovic@mi.sanu.ac.rs SVETISLAV MARIC RT-RK Computer Based Systems, Novi Sad, svetislav_maric@yahoo.com Abstract: High peak-to-average power ratio(PAPR) represents one of the biggest problems in OFDM systems. Therefore various methods for PAPR reduction are proposed. In this paper, we propose PAPR reduction method which is based on the new class of compandors. In order to reduce the complexity of the compandor model, we performed an approximation of nonlinear optimal compression function using the first degree spline functions. Simulation results show that OFDM system performances improve by reducing PAPR, which is performed by using the suggested compandor model. Keywords: PAPR, OFDM, compandor, spline functions.

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PAPR Reduction in OFDM

  • 1. 1 PAPR REDUCTION IN OFDM SYSTEMS USING COMPANDOR LAZAR VELIMIROVIC Mathematical Institute SASA, Belgrade, lazar.velimirovic@mi.sanu.ac.rs SVETISLAV MARIC RT-RK Computer Based Systems, Novi Sad, svetislav_maric@yahoo.com Abstract: High peak-to-average power ratio(PAPR) represents one of the biggest problems in OFDM systems. Therefore various methods for PAPR reduction are proposed. In this paper, we propose PAPR reduction method which is based on the new class of compandors. In order to reduce the complexity of the compandor model, we performed an approximation of nonlinear optimal compression function using the first degree spline functions. Simulation results show that OFDM system performances improve by reducing PAPR, which is performed by using the suggested compandor model. Keywords: PAPR, OFDM, compandor, spline functions.