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NTIA Report TR-05-419Interference Potential of Ultrawideband Signals Part 1: Procedures to Characterize Ultrawideband Emissions and Measure Interference Susceptibility of C-Band Satellite Digital Television ReceiversFebruary 2005Michael Cotton, Robert Achatz, Jeffery Wepman, Brent Bedford |
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Abstract: In this study, we hypothesize that ultrawideband (UWB) interference potential can be quantified in terms of UWB signal characteristics. To test this hypothesis, a test system was designed and built to inject UWB signals with known characteristics into a C-band satellite digital television receiver and quantitatively measure interference susceptibility via signal quality metrics (e.g., segment error rate, pre-Viterbi bit error rate, and modulation error ratio) taken from various points in the receiver signal processing chain. UWB signals are characterized by the amplitude probability distribution and power spectral density. Characterization measurements done with a vector signal analyzer provide amplitude and phase information to enable extensive post-measurement capability. This report describes the test setup and procedures in detail. Subsequent reports will provide assessment of interference potential for gated Gaussian noise bursts (Part 2) and modern UWB systems (Part 3). |
Keywords: digital television; interference; satellite communications; ultrawideband |
Disclaimer: Certain commercial equipment, components, and software are identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses. |
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