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  • 1
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    Rain-fade simulation and power augmentation for satellite communication systems (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The design and implementation of an automated rain-fade simulation and power augmentation system is presented. The system experimentally simulates and measures the effects of radiofrequency power fade on a 20 GHz communication link using a multimode travelling wave tube amplifier for loss compensation. Precision, computer-controlled attenuators are used in the fade simulation. Test plans for analog and digital testing are discussed.
    Keywords: COMMUNICATIONS AND RADAR
    Type: NASA-TM-103134 , E-5476 , NAS 1.15:103134
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Effects of amplitude distortions and IF equalization on satellite communication system bit-error rate performance (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Satellite communications links are subject to distortions which result in an amplitude versus frequency response which deviates from the ideal flat response. Such distortions result from propagation effects such as multipath fading and scintillation and from transponder and ground terminal hardware imperfections. Laboratory experiments performed at NASA Lewis measured the bit-error-rate (BER) degradation resulting from several types of amplitude response distortions. Additional tests measured the amount of BER improvement obtained by flattening the amplitude response of a distorted laboratory-simulated satellite channel. This paper presents the results of these experiments.
    Keywords: COMMUNICATIONS AND RADAR
    Type: AIAA PAPER 90-0878 , AIAA International Communication Satellite Systems Conference and Exhibit; Mar 11, 1990 - Mar 15, 1990; Los Angeles, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Effects of amplitude distortions and IF equalization on satellite communication system bit-error rate performance (1990)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Satellite communications links are subject to distortions which result in an amplitude versus frequency response which deviates from the ideal flat response. Such distortions result from propagation effects such as multipath fading and scintillation and from transponder and ground terminal hardware imperfections. Bit-error rate (BER) degradation resulting from several types of amplitude response distortions were measured. Additional tests measured the amount of BER improvement obtained by flattening the amplitude response of a distorted laboratory simulated satellite channel. The results of these experiments are presented.
    Keywords: COMMUNICATIONS AND RADAR
    Type: NASA-TM-102415 , E-5180 , NAS 1.15:102415 , AIAA PAPER 90-0878 , International Communication Satellite Systems Conference; Mar 11, 1990 - Mar 15, 1990; Los Angeles, CA; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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