Wang, Ziming and Ibrahim, Sarah and Su, Han and Farrell, Ronan (2016) Generalised Digital Predistortion of RF Power Amplifiers with Low-Rate Feedback Signal. Microwave Conference (EuMC), 2016 46th European. ISSN 978-2-87487-043-9

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Abstract

Assuming there is an infinite periodically sinusoidal signal x with known frequency, one can sample x at Nyquist zone or sampling-rate to recover the signal. In terms of digital predistortion (DPD) with modulated signal as input, this paper will show the same concept that theoretically one can sample the feedback signal at arbitrary sampling rate to obtain the same coefficient of DPD or behavioural models as the one calculated from the high sampling rate feedback signal. The performance of a generalised DPD technique using a traditional memory polynomial with low-rate analog-to-digital device(ADC) is experimentally validated. The NMSE and ACPR results indicate the same performance by using an ADC sampling from 100 MHz to 10 MHz.

Item Type:	Article
Keywords:	Probability; DPD; ADC; Sampling rate; High power amplifier; Behavioural modeling;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	8035
Identification Number:	https://doi.org/10.1109/EuMC.2016.7824472
Depositing User:	Ronan Farrell
Date Deposited:	21 Mar 2017 15:40
Journal or Publication Title:	Microwave Conference (EuMC), 2016 46th European
Publisher:	IEEE
Refereed:	Yes
Funders:	Science Foundation Ireland under Grant No. 10/CE/I1853, Centre for Telecommunications Research (CTVR)
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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