Overlapped segment piece-wise polynomial pre-distortion for the linearisation of power amplifiers in the presence of high PAPR OFDM signals

Souheil Ben Smida, Konstantinos Mimis, Kevin A. Morris, Mark A. Beach, Joe P. McGeehan, Jonathan Lees, Johannes Benedikt, Paul J. Tasker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

A modified piece-wise polynomial pre-distortion is proposed, investigated and compared against classic memoryless polynomial pre-distortion. The proposed enhanced piece-wise polynomial pre-distortion uses the overlap between segments to ensure continuity in the total pre-distortion function. The implementation of overlap allows the use of a simple error estimation algorithm to minimise hand over error. The classic and proposed piece-wise pre-distortion performances are assessed and compared for several sets of polynomial coefficients. The proposed method is shown to consistently outperform classical polynomial pre-distortion in terms of required coefficients and linearity improvement. The method is applied for the linearisation of an envelope tracking Class-J PA at 1.7GHz, under a 1.4MHz LTE signal with a 14.4dB PAPR.
Original languageEnglish
Title of host publication2012 IEEE/MTT-S International Microwave Symposium Digest
PublisherIEEE
ISBN (Electronic)978-1-4673-1088-8
ISBN (Print)978-1-4673-1085-7
DOIs
Publication statusPublished - 6 Aug 2012

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    Ben Smida, S., Mimis, K., Morris, K. A., Beach, M. A., McGeehan, J. P., Lees, J., Benedikt, J., & Tasker, P. J. (2012). Overlapped segment piece-wise polynomial pre-distortion for the linearisation of power amplifiers in the presence of high PAPR OFDM signals. In 2012 IEEE/MTT-S International Microwave Symposium Digest IEEE. https://doi.org/10.1109/MWSYM.2012.6259543