Research and implementation of adaptive digital pre-distortion in high-speed 32-APSK satellite communication system

Celun Liu*, Wei Du, Ping Tang, Xinmeng Li, Zhulin Xiong

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Adaptive Digital Pre-distortion (DPD) is applied to the typical traveling wave tube amplifier for high-speed 32-APSK satellite communication system. The paper presents research and implementation of adaptive digital pre-distortion. We show first the transmission system model and the adaptive algorithm based on QR decomposition RLS algorithm to achieve adaptive digital pre-distortion. We also present the hardware architecture of the pre-distorter. Finally, we apply the pre-distorter to an actual satellite communication system whose the modulation is 32-APSK with symbol rate of 162.5MHz. The experimental results show that the linear effect and the performance of the system are greatly improved by the application of adaptive digital pre-distortion.

Original languageEnglish
Title of host publicationProceedings of the 2014 9th International Conference on Communications and Networking in China, CHINACOM 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages321-326
Number of pages6
ISBN (Electronic)9781479959709
DOIs
Publication statusPublished - 3 Mar 2015
Event9th International Conference on Communications and Networking in China, CHINACOM 2014 - Maoming, China
Duration: 14 Aug 201416 Aug 2014

Publication series

NameProceedings of the 2014 9th International Conference on Communications and Networking in China, CHINACOM 2014

Conference

Conference9th International Conference on Communications and Networking in China, CHINACOM 2014
Country/TerritoryChina
CityMaoming
Period14/08/1416/08/14

Keywords

  • 32-APSK
  • QRD-RLS
  • adaptive digital pre-distortion
  • satellite communication

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