An Analysis of Output Characteristics of a Nonlinear Satellite Transponder for Multi-Carrier Systems
Summary :
In multi-carrier satellite communication systems, many modulated carriers have to be co-amplified through a TWTA (Traveling Wave Tube Amplifier). In such a case, the intermodulation due to the TWTA nonlinearities i.e., AM/AM and AM/PM conversions degrades that system performance. This paper analyzes the combined effects of the AM/AM and AM/PM conversions on the output properties of the TWTA using a quadrature nonlinear model. A general formula of the output autocorrelation function is derived as a function of the input autocorrelation function with an arbitrary input power spectrum. Based on this formula, the effects of the TWTA nonlinearities (both AM/AM and AM/PM conversions) on the output characteristics such as the output signal and intermodulation power, the intermodulation power spectral distribution, and the output signal-to-intermodulation ratio (SIMR) are theoretically evaluated.
- Publication
- IEICE TRANSACTIONS on transactions Vol.E64-E No.5 pp.334-341
- Publication Date
- 1981/05/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Transmission Systems
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Mazen N. DAHABREH, Norihiko MORINAGA, Toshihiko NAMEKAWA, "An Analysis of Output Characteristics of a Nonlinear Satellite Transponder for Multi-Carrier Systems" in IEICE TRANSACTIONS on transactions,
vol. E64-E, no. 5, pp. 334-341, May 1981, doi: .
Abstract: In multi-carrier satellite communication systems, many modulated carriers have to be co-amplified through a TWTA (Traveling Wave Tube Amplifier). In such a case, the intermodulation due to the TWTA nonlinearities i.e., AM/AM and AM/PM conversions degrades that system performance. This paper analyzes the combined effects of the AM/AM and AM/PM conversions on the output properties of the TWTA using a quadrature nonlinear model. A general formula of the output autocorrelation function is derived as a function of the input autocorrelation function with an arbitrary input power spectrum. Based on this formula, the effects of the TWTA nonlinearities (both AM/AM and AM/PM conversions) on the output characteristics such as the output signal and intermodulation power, the intermodulation power spectral distribution, and the output signal-to-intermodulation ratio (SIMR) are theoretically evaluated.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e64-e_5_334/_p
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@ARTICLE{e64-e_5_334,
author={Mazen N. DAHABREH, Norihiko MORINAGA, Toshihiko NAMEKAWA, },
journal={IEICE TRANSACTIONS on transactions},
title={An Analysis of Output Characteristics of a Nonlinear Satellite Transponder for Multi-Carrier Systems},
year={1981},
volume={E64-E},
number={5},
pages={334-341},
abstract={In multi-carrier satellite communication systems, many modulated carriers have to be co-amplified through a TWTA (Traveling Wave Tube Amplifier). In such a case, the intermodulation due to the TWTA nonlinearities i.e., AM/AM and AM/PM conversions degrades that system performance. This paper analyzes the combined effects of the AM/AM and AM/PM conversions on the output properties of the TWTA using a quadrature nonlinear model. A general formula of the output autocorrelation function is derived as a function of the input autocorrelation function with an arbitrary input power spectrum. Based on this formula, the effects of the TWTA nonlinearities (both AM/AM and AM/PM conversions) on the output characteristics such as the output signal and intermodulation power, the intermodulation power spectral distribution, and the output signal-to-intermodulation ratio (SIMR) are theoretically evaluated.},
keywords={},
doi={},
ISSN={},
month={May},}
Copy
TY - JOUR
TI - An Analysis of Output Characteristics of a Nonlinear Satellite Transponder for Multi-Carrier Systems
T2 - IEICE TRANSACTIONS on transactions
SP - 334
EP - 341
AU - Mazen N. DAHABREH
AU - Norihiko MORINAGA
AU - Toshihiko NAMEKAWA
PY - 1981
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E64-E
IS - 5
JA - IEICE TRANSACTIONS on transactions
Y1 - May 1981
AB - In multi-carrier satellite communication systems, many modulated carriers have to be co-amplified through a TWTA (Traveling Wave Tube Amplifier). In such a case, the intermodulation due to the TWTA nonlinearities i.e., AM/AM and AM/PM conversions degrades that system performance. This paper analyzes the combined effects of the AM/AM and AM/PM conversions on the output properties of the TWTA using a quadrature nonlinear model. A general formula of the output autocorrelation function is derived as a function of the input autocorrelation function with an arbitrary input power spectrum. Based on this formula, the effects of the TWTA nonlinearities (both AM/AM and AM/PM conversions) on the output characteristics such as the output signal and intermodulation power, the intermodulation power spectral distribution, and the output signal-to-intermodulation ratio (SIMR) are theoretically evaluated.
ER -
English
