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A Combine Nonlinear Companding Transform Technique and Clipping Technique for Efficiently Reducing PAPR of OFDM Signals


Rana Giteshkumar Dineshbhai , U. V. Patel College of Engineering, Ganpat University, Kherva, Gujarat, India.


Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Nonlinear Companding Transform (NCT)


Orthogonal Frequency Division Multiplexing (OFDM) is one of most attractive technology in today’s wireless communication systems. But its practical implementation is mainly limited by its high Peak-to-Average Power Ratio (PAPR). We are hereby proposing a combine nonlinear companding transform (NCT) technique and clipping technique for reduce PAPR. First, Nonlinear companding transform is performed, where statistics of OFDM signal is transformed into the desirable statistics by maintaining average power. After NCT, clipping is performed on an OFDM signal. At the receiver, original information is recovered by decompanding operation and demodulation. The proposed technique reduces PAPR compared to conventional techniques.

Other Details

Paper ID: IJSRDV3I2593
Published in: Volume : 3, Issue : 2
Publication Date: 01/05/2015
Page(s): 837-840

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