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Compensations of Nonlinear Effects of TWTA for Signal Super-Positioning Satellite Communication Systems

  • Kenta Kubo
  • Shigeo Naoi
  • Yozo Takeda
  • Ryusuke Miyamoto
  • Takao Hara
  • Minoru Okada
Conference paper
  • 660 Downloads
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 43)

Abstract

The Carrier Super-Positioning Satellite System is a promising telecommunication system because the frequency efficiency is double that of existing satellite systems. In this technique, we can use the same frequency band for inbound and outbound signals which are currently used in separated bands. Interference canceller used in the carrier super-positioning system is degraded a lot by the nonlinear distortion of satellite TWTA. This paper proposes and verifies a method of compensation of nonlinearity for the interference canceller. It becomes clear that, by intentionally giving the same nonlinearity as that of the satellite to the generated replica, significant part of the interference caused by the nonlinearity can be removed.

Keywords

satellite communication interference canceller nonlinear distortion frequency reuse technology TWTA 

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Copyright information

© ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering 2010

Authors and Affiliations

  • Kenta Kubo
    • 1
  • Shigeo Naoi
    • 2
  • Yozo Takeda
    • 2
  • Ryusuke Miyamoto
    • 1
  • Takao Hara
    • 1
  • Minoru Okada
    • 1
  1. 1.Nara Institute of Science and TechnologyGraduate School of Information ScienceIkoma, NaraJapan
  2. 2.SKY perfect JSAT CorporationTokyoJapan

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