NTIA Report TR-98-348

Software Implementation of a Wideband HF Channel Transfer Function

April 1998

David A. Sutherland Jr.

Abstract: This report presents an analytic model implemented as the computer program of the transfer function of a wideband HF channel model for use in a hardware simulator. The transfer function is the basic input to the hardware simulator. The mathematical basis of the program and the propagation model is presented. Parameters that characterize the skywave paths of a particular HF ionospheric condition are inputs to the program. The program code is listed and documentation is provided. Graphical verification using spectrally averaged scattering functions indicates that the transfer function program performs well and should find use as both an engineering tool and as the basis for a new standard propagation model.

Keywords: channel transfer function; HF channel model; HF propagation; scattering function; wideband HF

• Cover, Preface; Acknowledgments; Contents; Figures; Tables; Abbreviations

• Part I, Chapters 1-4

• Part II, Chapters 5 & 6

• Chapter 7. Code and Documentation; 7.1 Purpose and General Description; 7.2 Project File LEW1.CPP

• 7.3 Project File LEW2.CPP

• 7.4 Project File LEW3.CPP (7.2)

• 7.5 Project File LEW4.CPP; 7.6 Additional Information

• Chapter 8 Conclusion; Chapter 9 References

• Appendix: Scattering Function Program (6 MB)

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.

To request a reprint of this report, contact:
Margaret Luebs, Publications Officer
Institute for Telecommunication Sciences
Voice: (303) 497-3572
info@its.bldrdoc.gov