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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 language | English |
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Title of host publication | Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International |
Place of Publication | Montreal, QC, Canada |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1 |
Number of pages | 3 |
DOIs | |
Publication status | Published - Jun 2012 |
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- 2 Finished