Paper Info
Title
EVM Derivation for Multicarrier Signals: Joint Impact of Non-Linear Amplification and Predistortion
Abstract
Orthogonal Frequency Division Multiplexing (OFDM) systems are extremely sensitive to nonlinear distortions brought by the Power Amplifier (PA) because of the inherent high peak-to-average power ratio (PAPR) of the signal. In this paper, we analyze the impact of the non-linearities on the output signal, assuming that the transmitter is equipped with a linearization stage before the PA. Therefore, the expression of the Error Vector Magnitude (EVM) of the output signal is analytically derived with or without the use of the linearization process. We provide analytical expressions of the EVM in the form of a series expansion that depends on the transition factors of the PA and predistortion characteristics. Simulations results confirm the accuracy of our analytical expressions, even when limiting the series expansion to an order of 4.
Year
DOI
Venue
2015
10.1109/VTCSpring.2015.7145831
Vehicular Technology Conference
Keywords
Field
DocType
OFDM modulation,error statistics,nonlinear distortion,power amplifiers,EVM,OFDM systems,PAPR,error vector magnitude,linearization process,linearization stage,multicarrier signals,nonlinear distortions,orthogonal frequency division multiplexing systems,peak-to-average power ratio,power amplifier,predistortion characteristics,transition factors,transmitter
Transmitter,Nonlinear system,Expression (mathematics),Computer science,Control theory,Series expansion,Electronic engineering,Linearization,Predistortion,Orthogonal frequency-division multiplexing,Amplifier
Conference
ISSN
Citations 
PageRank 
2577-2465
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Cheaito, A.111.08
M. Crussiere2151.97
Y. LouëT3374.20
Jean-François Hélard4275.32