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Published in:

Volume 5 Issue 4
April-2018
eISSN: 2349-5162

Unique Identifier

JETIR1804036

Page Number

176-181

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Title

Reduction of PAPR in OFDM System Using Combined DCT/Hadamard Transform with Nonlinear Companding Transform

ISSN

2349-5162

Cite This Article

"Reduction of PAPR in OFDM System Using Combined DCT/Hadamard Transform with Nonlinear Companding Transform", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 4, page no.176-181, April-2018, Available :http://www.jetir.org/papers/JETIR1804036.pdf

Abstract

OFDM is familiar and the most useful multi-carrier modulation technique used in different modern high speed wireless communication applications like, 3GPP and LTE standards. High peak-to-average power ratio (PAPR) is the considerable problem in OFDM (Orthogonal frequency division multiplexing) system. In this paper, proposed a technique i.e combination of DCT/Hadamard transform with nonlinear Companding transform to reduce PAPR more effectively. Basically nonlinear Companding transform enlarges the small magnitude values and compresses the large magnitude values of OFDM signal. So that PAPR is minimized in OFDM signal. DCT/Hadamard transforms are data compression techniques which reduces the autocorrelation in input data sequence. These transforms are applied on data prior to IFFT operation in OFDM system. The simulation results shows that the proposed combined technique gives better PAPR reduction compared to their individual performances.

Key Words

Orthogonal frequency division multiplexing (OFDM), Discrete cosine transform (DCT), Hadamard Transform, Nonlinear Companding transform and Peak-to-average power ratio (PAPR).

Cite This Article

"Reduction of PAPR in OFDM System Using Combined DCT/Hadamard Transform with Nonlinear Companding Transform", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 4, page no. pp176-181, April-2018, Available at : http://www.jetir.org/papers/JETIR1804036.pdf

Publication Details

Published Paper ID: JETIR1804036
Registration ID: 180978
Published In: Volume 5 | Issue 4 | Year April-2018
DOI (Digital Object Identifier):
Page No: 176-181
ISSN Number: 2349-5162

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Cite This Article

"Reduction of PAPR in OFDM System Using Combined DCT/Hadamard Transform with Nonlinear Companding Transform", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 4, page no. pp176-181, April-2018, Available at : http://www.jetir.org/papers/JETIR1804036.pdf




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