Peak-to-average power ratio versus instantaneous-to-average power ratio for OFDM

Author

Liu, Qijia ; Ma, Xiaoli ; Zhou, G. Tong ; Wu, Jie

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Tech, Atlanta, GA

fYear

2008

fDate

26-29 Oct. 2008

Firstpage

938

Lastpage

942

Abstract

In the literature, peak-to-average power ratio (PAR) is often used as an indicator for the dynamic range of OFDM signals. PAR is an extreme value statistic and can present an overly pessimistic view of the signal. Instantaneous-to-average power ratio (IAR), on the other hand, reflects more accurately the characteristics of the sample population. In this paper, we show that depending on whether clipping is allowed to occur, PAR or IAR may be a more suitable metric.

Keywords

OFDM modulation; statistical analysis; OFDM; extreme value statistic; instantaneous-to-average power ratio; peak-to-average power ratio; Dynamic range; Frequency division multiplexing; Nonlinear distortion; OFDM; Peak to average power ratio; Power amplifiers; Power engineering and energy; Power engineering computing; Statistics; Time domain analysis; Orthogonal frequency division multiplexing (OFDM); instantaneous-to-average power ratio (IAR); nonlinear distortion; peak-to-average power ratio (PAR); power efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2008 42nd Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

978-1-4244-2940-0

Electronic_ISBN

1058-6393

Type

conf

DOI

10.1109/ACSSC.2008.5074549

Filename

5074549