Peer-Reviewed Journal Details
Mandatory Fields
Varahram, P;Dooley, J;Finnerty, K;Farrell, R
2017
May
International Journal of Communication Systems
A low complexity pre-distortion scheme for power amplifier linearization in wideband applications
Published
0 ()
Optional Fields
DIGITAL PREDISTORTION OFDM SYSTEM SIGNALS MEMORY MODEL
30
In this paper, a nonlinear autoregressive with exogenous inputs (NARX) digital pre-distortion scheme to linearize power amplifiers is proposed. The proposed NARX digital pre-distortion gives better accuracy and spectral leakage suppression compared with other commonly used Volterra-based techniques. The stability criterion of the NARX digital pre-distortion is derived from the frequency domain analysis. Simulation is carried out with a 20MHz single carrier long-term evolution signal and two-carrier long-term evolution signal and instantaneous to average ratio of 6.2 dB at 0.01% complementary cumulative distribution function (CCDF). The results of simulation analysis show a slight improvement in adjacent channel leakage ratio performance with 30% reduction in the number of floating point operations compared with conventional pre-distortion techniques. Copyright (C) 2016 John Wiley & Sons, Ltd.
HOBOKEN
1074-5351
10.1002/dac.3177
Grant Details