Title :
Baseband predistorter using direct spline computation
Author :
Acciari, G. ; Giannini, F. ; Limiti, E. ; Rossi, M.
Author_Institution :
Dept. of Electron. Eng., Univ. of Roma ´´Tor Vergata´´, Italy
fDate :
6/3/2005 12:00:00 AM
Abstract :
A baseband predistorter is presented. Key features of the predistorter reside in the use of cubic spline interpolation to generate predistorted input data to the power amplifier, without the time convergence problems of classical approaches, with the goal of a reduction in the computational effort. Simulated behaviour of the proposed scheme is presented, demonstrating the effectiveness of the approach.
Keywords :
digital circuits; linearisation techniques; nonlinear distortion; nonlinear network synthesis; radio transmitters; signal processing; signal processing equipment; splines (mathematics); baseband predistorter; computational effort; cubic spline interpolation; digital realisation; direct spline computation; linearisation techniques; power amplifier; time convergence problems; transmitter;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
DOI :
10.1049/ip-cds:20040135
