Simplified online coefficients updating for digital predistortion of wideband/multi-band RF power amplifiers

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Title: Simplified online coefficients updating for digital predistortion of wideband/multi-band RF power amplifiers
Authors: Guo, Yan
Yu, Chao
Zhu, Anding
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Date: 9-Dec-2015
Online since: 2019-05-01T10:00:38Z
Abstract: In this paper, a simplified online coefficients updating technique is proposed to realize real-time timing of digital predistortion (DPD) for RF power amplifiers (PAs), particularly focusing on wideband and concurrent multi-band scenarios. It is achieved by equally weighting the memory terms in conventional DPD models that leads to a significant reduction of numerical calculation complexity in the coefficients updating process and thus saves time and power during real system operation. To validate the proposed method, both wideband LTE- A (100 MHz) and concurrent dual-band (20 MHz + 20 MHz) cases have been tested. Experimental results show that the proposed method can achieve excellent performance with significant reduction of system complexity compared to the conventional approaches.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Publisher: IEEE
Copyright (published version): 2015 IEEE
Keywords: Digital predistortionDual-bandModel extractionOn-line updatingPower amplifierWideband
DOI: 10.1109/apmc.2015.7411574
Language: en
Status of Item: Not peer reviewed
Is part of: 2015 Asia-Pacific Microwave Conference (APMC2015) Proceedings
Conference Details: The 2015 Asia-Pacific Microwave Conference (APMC2015), Nanjing, China, 6-9 December 2015
ISBN: 9781479987658
Appears in Collections:Electrical and Electronic Engineering Research Collection

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