September 1993 | Technical Report NTIA TR-93-298
Digital Emission Spectrum Model
Cite This Publication
David Anderson and David J. Cohen, “Digital Emission Spectrum Model,” Technical Report NTIA TR-93-298, U.S. Department of Commerce, National Telecommunications and Information Administration, Institute for Telecommunication Sciences, September 1993.
Abstract:
The Digital Emission Spectrum Model report was released in September 1993. A computer program was developed to calculate the power spectral density (PSD) and the fractional power containment bandwidth for various digital modulation techniques. The power containment capability was used to provide guidance for determination of necessary bandwidth in support of Annex J of the NTIA Manual. This report documents the models contained in the computer program and illustrates the models with various sample problems. The report also shows the verification of the computer program implementation.
The digital modulation techniques that are presently included in the computer program are:
- Phase shift keying (PSK) with non–return-to-zero modulation
- Quadrature amplitude modulation (QAM)
- Frequency shift keying (FSK)
- Minimum shift keying (MSK)
- Bi-phase shift keying with raised cosine modulation
- Bi-phase shift keying with Manchester modulation
Keywords: spectrum; emission spectrum; digital modulation; bandwidth; necessary bandwidth; power spectral density; transmitter spectrum
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Disclaimer:
Certain commercial equipment, components, and software may be 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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