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http://dx.doi.org/10.7236/JIIBC.2020.20.4.59

An artificial noise generation method for MODEM performance test in satellite communication system  

Cho, Tae-Chong (Defense Agency for Technology and Quality)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.20, no.4, 2020 , pp. 59-64 More about this Journal
Abstract
Occasionally, MODEM test in satellite communication systems are needed. But Rx terminals in satellite communications are designed to obtain high SNR generally, therefore artificial bad conditions and environments are demanded for the test. One of the typical method is satellite output power reduction. Using noise generator can be another method. However, these costs a lot of money, time, and procedures in reality. In order to overcome these problems, this paper proposes an artificial noise generation method for MODEM test in satellite communication systems. First of all, SNR of a general heterodyne Rx terminal is calculated. Based on the calculation, a new model which is including variable attenuator is proposed to increase noise level. Simulation results illustrate the variable attenuator can control SNR, and these show that MODEM test in satellite communication systems be possible.
Keywords
Satellite communication; Rx terminals; MODEM test; Artificial noise generation; SNR control;
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Times Cited By KSCI : 2  (Citation Analysis)
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