Research Article
Compensations of Nonlinear Effects of TWTA for Signal Super-Positioning Satellite Communication Systems
@INPROCEEDINGS{10.1007/978-3-642-13618-4_4, author={Kenta Kubo and Shigeo Naoi and Yozo Takeda and Ryusuke Miyamoto and Takao Hara and Minoru Okada}, title={Compensations of Nonlinear Effects of TWTA for Signal Super-Positioning Satellite Communication Systems}, proceedings={Personal Satellite Services. Second International ICST Confernce, PSATS 2010, Rome, Italy, February 2010 Revised Selected Papers}, proceedings_a={PSATS}, year={2012}, month={5}, keywords={satellite communication interference canceller nonlinear distortion frequency reuse technology TWTA}, doi={10.1007/978-3-642-13618-4_4} }- Kenta Kubo
Shigeo Naoi
Yozo Takeda
Ryusuke Miyamoto
Takao Hara
Minoru Okada
Year: 2012
Compensations of Nonlinear Effects of TWTA for Signal Super-Positioning Satellite Communication Systems
PSATS
Springer
DOI: 10.1007/978-3-642-13618-4_4
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.