Estimation of AM/PM Characteristics Impact on Performance of DVB-S2/S2X System with Digital Predistortion

Digital Satellite Broadcasting Systems DVB-S2 and DVB-S2X are good candidates for delivery of HDTV and UHDTV services to consumers. New types of APSK signal constellations with amplitude modulation are introduced in these standards to increase possible data rates. Use of digital predistortion techni...

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Bibliographic Details
Published in:	2022 International Conference on Electrical Engineering and Photonics (EExPolytech) pp. 134 - 138
Main Authors:	Puzko, Danila, Batov, Yuri, Tkachenko, Dmitry, Gelgor, Aleksandr, Angueira, Pablo, Montalban, Jon
Format:	Conference Proceeding
Language:	English
Published:	IEEE 20-10-2022
Subjects:	AM/AM AM/PM Digital Predistortion Phase distortion Predistortion Saleh Model Satellite broadcasting System performance Transponders TWTA Uplink
Online Access:	Get full text
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Summary:	Digital Satellite Broadcasting Systems DVB-S2 and DVB-S2X are good candidates for delivery of HDTV and UHDTV services to consumers. New types of APSK signal constellations with amplitude modulation are introduced in these standards to increase possible data rates. Use of digital predistortion techniques may considerably improve the performance of these systems and decrease required SNR thresholds. The paper investigates the impact of AM/PM phase distortions in high power amplifiers (HPA) of satellite systems and shows that for typical HPA amplifiers described by Saleh model the impact of AM/PM distortions is less considerable than impact of amplitude distortions AM/AM.
ISSN:	2771-697X
DOI:	10.1109/EExPolytech56308.2022.9950945