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Reseach Article

Cumulative Distribution of the Peak to Average Power Ratio in an OFDM System

Published on December 2015 by Lokesh C., Mamatha C.g., Rekha K.r.
National Conference on Power Systems and Industrial Automation
Foundation of Computer Science USA
NCPSIA2015 - Number 1
December 2015
Authors: Lokesh C., Mamatha C.g., Rekha K.r.
953ee0ef-0132-40ca-a299-51c8cec58b60

Lokesh C., Mamatha C.g., Rekha K.r. . Cumulative Distribution of the Peak to Average Power Ratio in an OFDM System. National Conference on Power Systems and Industrial Automation. NCPSIA2015, 1 (December 2015), 25-28.

@article{
author = { Lokesh C., Mamatha C.g., Rekha K.r. },
title = { Cumulative Distribution of the Peak to Average Power Ratio in an OFDM System },
journal = { National Conference on Power Systems and Industrial Automation },
issue_date = { December 2015 },
volume = { NCPSIA2015 },
number = { 1 },
month = { December },
year = { 2015 },
issn = 0975-8887,
pages = { 25-28 },
numpages = 4,
url = { /proceedings/ncpsia2015/number1/23329-7222/ },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Proceeding Article
%1 National Conference on Power Systems and Industrial Automation
%A Lokesh C.
%A Mamatha C.g.
%A Rekha K.r.
%T Cumulative Distribution of the Peak to Average Power Ratio in an OFDM System
%J National Conference on Power Systems and Industrial Automation
%@ 0975-8887
%V NCPSIA2015
%N 1
%P 25-28
%D 2015
%I International Journal of Computer Applications
Abstract

An OFDM signal consists of a number of independently modulated SCs, which can give a large peak-to-average power (PAP) ratio when added up coherently. The peak power is defined as the power of a sine wave with amplitude equal to the maximum envelope value. Hence, an unmodulated carrier has a PAP ratio of 0 dB. An alternative measure of the envelope variation of a signal is the Crest factor, which is defined as the maximum signal value divided by the RMS signal value. For an unmodulated carrier, the Crest factor is 3 dB. This 3-dB difference between the PAP ratio and Crest factor also holds for other signals, provided that the center frequency is large in comparison with the signal bandwidth.

References
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Index Terms

Computer Science
Information Sciences

Keywords

Subcarriers (scs) Peak-to-average Power (pap) Orthogonal Frequency Division Multiplexing (ofdm) Forward Error Correction (fec) Quadrature Phase Shift Keying (qpsk) Cumulative Distribution Function (cdf) Signal-to-noise Ratio (snr) Coded Ofdm (cofdm) Parallel-to-serial (p/s).