• A. Lakshmi Narayana
• V.B.S. Srilatha Indira Dutt
• G. Sasibhushana Rao
• A.Abhishiktha

Orthogonal frequency division multiplexing is multicarrier wireless communication modulation scheme, which is a fascinating approach for wireless communication applications to achieve very high data rates. However, its key limitation is its large peak to average power ratio (PAPR), which results in significant distortion while passing through a nonlinear device, such as a transmitter high power amplifier (HPA). In this paper combination of Exponential companding (EC) with Discrete Hartley Transform (DHT) is proposed to reduce the PAPR in great extent when compared to EC with Walsh–Hadamard transform (WHT). Simulation results show that DHT with EC will obtain effective reduction of PAPR over WHT with EC.

OFDM; PAPR; Discrete Hartley Transform; Walsh–Hadamard transform, Companding Distortion; Piecewise linear companding.

"Hybrid PAPR reduction technique in OFDM system based on Exponential Companding", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.650-654, February-2019, Available :http://www.jetir.org/papers/JETIR1902A93.pdf

"Hybrid PAPR reduction technique in OFDM system based on Exponential Companding", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp650-654, February-2019, Available at : http://www.jetir.org/papers/JETIR1902A93.pdf