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PAPR Reduction in OFDM System using DWT with Non linear High Power Amplifier

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Author(s): Dr. Pankaj Sharma, | Saumya Tripathi, | Abhinav Rastogi, | Kapil Sachdeva, | Mohit Sharma,

Journal: International Journal of Innovative Technology and Exploring Engineering
ISSN 2278-3075

Volume: 2;
Issue: 5;
Start page: 184;
Date: 2013;
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Keywords: DWT | FFT | HPA | OFDM | PAPR.

ABSTRACT
High Peak to Average Power Ratio (PAPR) of thetransmitted signal is a major problem in Orthogonal FrequencyDivision Multiplexing (OFDM) which induces the degradation ofbit error rate (BER) leading to a significant loss in thetransmission power efficiency. Simulation results of the proposedtechnique shows a prominent reduction of 1.63 dB in PAPR. Inthis paper, we have investigated the performance of DWT-OFDMagainst conventional FFT-OFDM in terms of PAPR and BER(Bit Error Rate) in the system.
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