Lower Bound for the Normalized Mean Square Error in Power Amplifier Linearization
Journal article, 2018
The normalized mean square error (NMSE) is a performance criteria commonly used in power amplifier (PA) linearization to quantify the amount of in-band distortion encountered at the output of a PA. This letter presents a closed-form expression for the minimum NMSE that could be obtained in a linearization scenario. The derived expression is verified through numerical simulations and is used to compare the performance of different digital predistortion linearization schemes proposed in the literature.
power amplifier (PA)
normalized mean square error (NMSE)
nonlinearity
Linearization
nonlinear systems
Author
Jessica Chani Cahuana
Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems
Christian Fager
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Thomas Eriksson
Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems
IEEE Microwave and Wireless Components Letters
1531-1309 (ISSN)
Vol. 28 5 425-427Subject Categories
Telecommunications
Control Engineering
Signal Processing
DOI
10.1109/LMWC.2018.2817021