United States Department of Transportation
i
Performance Evaluation of Data Modems for the Aeronautical Satellite Channel.
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1975-09-01
[PDF-1.55 MB]
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Abstract:Several modems and satellite subsystems were tested with the aid of an aeronautical channel simulation facility. The modems tested included a high performance DPSK modem, a high performance CPSK modem, two hybird voice/data modems, and a lower performance CPSK modem. Data Performance results are presented in the form of Probability of Bit Error versus Signal to Noise Density and Signal to Multipath Ratios with Doppler Spread as a parameter. Some tests were conducted with a hard limiting IF processor in cascade with channel simulator to simulate satellit characteristics. The characteristics of the aeronautical satellot channel simulator are also described. The discussion concluded with a general evaluation of the effect of aeronautical satellite channel characteristics on modem performance as derived from the simulatoon experiments.
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Content Notes:Introduction, Channel characteristics and simulator design, Test conditions, Test configuration, Modem tested, Test results, Analysis of results, Conclusions, References,
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