Title :
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
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;
Conference_Titel :
Signals, Systems and Computers, 2008 42nd Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2940-0
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2008.5074549
