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A LUT Baseband Digital Pre-Distorter For Linearization

Authors:
Feng Li
Bruno Feuvrie
Yide Wang
Anne-Sophie Descamps

Keywords: power amplifier; baseband predistortion procedure; nonlinear memory effect; digital predistortion; linearization.

Abstract:
This paper proposes a Look-Up-Table Digital Pre-Distorter (LUT DPD) for PA linearization with baseband predistorting procedure. Memory effect can be compensated with Memory Polynomial (MP) modelisation for the wideband applications. Measurements are realized on a PA ZFL-2500 driven by a modulated 16QAM signal with 3.84MHz bandwidth at the carrier frequency of 1.8GHz. The proposed solution achieves maximum ACPR reduction of 12.5dB and EVM correction of 3%.

Pages: 55 to 59

Copyright: Copyright (c) IARIA, 2012

Publication date: April 29, 2012

Published in: conference

ISSN: 2308-3964

ISBN: 978-1-61208-193-9

Location: Chamonix, France

Dates: from April 29, 2012 to May 4, 2012