Abstract
In this paper a non-linear companding transform is proposed which can effectively reduce the PAPR value in OFDM systems. High value of PAPR has undesirable effects on the performance of wireless communication systems. Various companding schemes are used to reduce the problem of PAPR in orthogonal frequency division multiplexing schemes. High PAPR drives the power amplifiers used at the transmitter’s side into non-linear region and leads to high power dissipation in hand held devices. The proposed NCT has the capability to transform power and amplitude of the original OFDM signal into a uniform distribution which leads to the reduction of PAPR.
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