Title :
OFDM PAPR reduction by convex optimization: A power amplifier point-of-view
Author :
Nader, Charles ; Händel, Peter ; Björsell, Niclas
Author_Institution :
Center for RF Meas. Technol., Univ. of Gavle, Gavle, Sweden
Abstract :
In this paper we evaluate the application of convex optimization for PAPR reduction on OFDM 802.11a signal type. A radio frequency power amplifier is measured and characterized while excited by both original and optimized OFDM signals. A state-of-art test setup was used for the purpose. Figure of merits such as power added efficiency, in-band errors, and out-of-band spectral emissions are investigated for their relevance and a study of the power distribution in the excitation signal is evaluated.
Keywords :
OFDM modulation; power amplifiers; wireless LAN; OFDM 802.11a signal type; OFDM PAPR reduction; OFDM signals; convex optimization; excitation signal; in-band errors; out-of-band spectral emissions; power added efficiency; power distribution; radio frequency power amplifier; Frequency measurement; OFDM; Peak to average power ratio; Power amplifiers; Power distribution; Power measurement; RF signals; Radio frequency; Radiofrequency amplifiers; Testing; Communication system performance; convex optimization; dirty radio; power added efficiency; power amplifiers; spectrum mask;
Conference_Titel :
RF Front-ends for Software Defined and Cognitive Radio Solutions (IMWS), 2010 IEEE International Microwave Workshop Series on
Conference_Location :
Aveiro
Print_ISBN :
978-1-4244-5751-9
DOI :
10.1109/IMWS.2010.5440994
