Peak to Average Power Ratio Reduction of OFDM Signal using Companding Transforms

Peak to Average Power Ratio Reduction of OFDM Signal using Companding Transforms
Author(s):
Jyoti Gurjar, Shivraj Singh, Rohit Bhayre
DOI Number:
10.6084/m9.figshare.5263573
Keywords:
Complementary cumulative distribution function (CCDF), Nonlinear companding transform (NCT), Orthogonal frequency division multiplexing (OFDM), Peak-to-average power ratio (PAPR).
Abstract
The major drawbacks which is yet to be solved in orthogonal frequency division multiplexing (OFDM) system is its high peak-to-average power ratio (PAPR). In this paper, a new companding transform has been proposed which is nonlinear in nature and which transforms the Gaussian-distributed OFDM signals into a desired piecewise function. variable slopes and inflexion points are introduced in the target probability density function, to impart more flexibility in the companding form and an effective trade-off between the PAPR and bit error rate performances can be achieved along with a relatively low complexity. The theoretical analyses of different techniques and trade-off between PAPR reduction and bit error ratio (BER) performance are presented well.
Article Details
Unique Paper ID: 144746 Publication Volume & Issue: Volume 4, Issue 3 Page(s): 10 - 15
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