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Logarithmic Companding using Firefly Algorithm for PAPR Reduction in OFDM System

Kratika Mittal, Rekha Gupta

Abstract


Orthogonal Frequency Division Multiplexing (OFDM) is a digital transmission method developed to meet the increasing demand for higher data rates in communications which can be used in both wired and wireless environments. However OFDM is handicapped with a major problem of high peak-to-average power ratio (PAPR), which gives rise to non-linear distortion, inter-symbol interference and out-of-band radiation. Several PAPR reduction techniques have been devised over the last few decades in order to surpass this problem of PAPR. In this paper we have analysed the effectiveness of Logarithmic Companding technique which is optimized using Firefly algorithm for PAPR reduction and the simulation results are compared with other techniques proposed in literature.
Keywords: A-law, CCDF, Companding, Firefly algorithm, OFDM, PAPR, SLM.

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References


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DOI: https://doi.org/10.37628/jdcas.v1i1.32

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