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    Compact undersampled digital predistortion for flexible single-chain multi-band RF transmitter


    Wang, Ziming and Guan, Lei and Farrell, Ronan (2017) Compact undersampled digital predistortion for flexible single-chain multi-band RF transmitter. In: 2017 IEEE MTT-S International Microwave Symposium (IMS). IEEE, pp. 1542-1545. ISBN 978-1-5090-6360-4

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    Abstract

    Compact multi-band RF transmitter solution will play a unique role in the forthcoming 4G-beyond and 5G wireless networks. The emerging RF class data convertor, i.e., RFDAC enables a promising single-chain multi-band RF transmitter solution. To combat the imperfections of practical nonlinear power amplifiers in the single-chain multi-band RF solution, we need multi-band RF signal conditioning unit. This paper presents a very compact single-chain multi-band digital predistortion (DPD) solution using only one under-sampling ADC and a low band-pass filter to replace the conventional DPD feedback paths. The experimental results verified the proposed compact multiband DPD architecture. Preliminarily, the proposed DPD scheme with a single real ADC at 76.8MSPS sampling rate can achieve satisfactory multi-band linearization performance, i.e., -55 dBc adjacent channel power ratio (ACPR) for 1GHz RF bandwidth.

    Item Type: Book Section
    Additional Information: This paper was presented at IEEE MTT-S International Microwave Symposium (IMS), 4-9 Jun 2017, Honololu, HI, USA.
    Keywords: analogue-digital conversion; band-pass filters; linearisation techniques; power amplifiers; radio transmitters; signal sampling; wideband amplifiers; compact multiband RF transmitter solution; 5G wireless networks; emerging RF class data convertor; single-chain multiband RF transmitter solution; single-chain multiband RF solution; multiband RF signal conditioning unit; single-chain multiband digital predistortion solution; low band-pass filter; compact multiband DPD architecture; single real ADC; multiband linearization performance; 1GHz RF bandwidth; nonlinear power amplifiers; compact undersampled digital predistortion; frequency 1.0 GHz; digital predistortion; multi-band transmitter; PA linearization; RFDAC; undersampling ADC;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 11911
    Identification Number: https://doi.org/10.1109/MWSYM.2017.8058923
    Depositing User: Ronan Farrell
    Date Deposited: 28 Nov 2019 15:50
    Publisher: IEEE
    Refereed: Yes
    URI:

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