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http://dx.doi.org/10.7236/JIIBC.2019.19.5.129

Control Technique of Modem Output Level to improve Frequency Response Equalization of Satellite TX Terminals  

Cho, Tae-Chong (Defense Agency for Technology and Quality)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.19, no.5, 2019 , pp. 129-133 More about this Journal
Abstract
Frequency resource efficiency is important in satellite communication systems. One of the causes of a waste of frequency resource is bad flatness. In the case, flatness of satellite Tx terminals would be worse by ACI and guard band. In order to overcome this problem, this paper proposes a technique for frequency response equalization in satellite Tx terminals. First of all, a general linear polynomial expression which meets least squares of representative measurement data is calculated to interpolate unmeasured data. And then flatness can be adjusted using the polynomial expression. Simulation results illustrate adjusted data have lower peak to peak and standard deviation than original data, and these show that flatness be improved.
Keywords
Satellite communication; Tx terminals; Frequency response equalization; Least square interpolation;
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Times Cited By KSCI : 1  (Citation Analysis)
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