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DISCRETE-SIGNAL ANALYSIS AND DESIGN- P34:Electronic circuit analysis and design projects often involve time-domain and frequency-domain characteristics that are difÞcult to work with using the traditional and laborious mathematical pencil-and-paper methods of former eras. This is especially true of certain nonlinear circuits and sys- tems that engineering students and experimenters may not yet be com- fortable with. | THE HILBERT TRANSFORM 151 expensive. Receivers very often combine the phasing and filter methods in the same or different signal frequency ranges to get greatly improved performance in difficult-signal environments. The comments for the SSB transmitter section also apply to the receiver and no additional comments are needed for this chapter which is intended only to show the Hilbert transform and its mathematical equivalent in a few specific applications. Further and more complete information is available from a wide variety of sources e.g. Sabin and Schoenike 1998 that cannot be pursued adequately in this introductory book which has emphasized the analysis and design of discrete signals in the time and frequency domains. REFERENCES Bedrosian S. D. 1963 Normalized design of 90 phase-difference networks IRE Trans. Circuit Theory vol. CT-7 June. Carlson A. B. 1986 Communication Systems 3rd ed. McGraw-Hill New York. Cuthbert T. R. 1987 Optimization Using Personal Computers with Applications to Electrical Networks Wiley-Interscience New York. See trcpep@aol.com or used-book stores. Dorf R. C. 1990 Modern Control Systems 5th ed. Addison-Wesley Reading MA p. 282. Krauss H. L. C. W. Bostian and F. H. Raab 1980 Solid State Radio Engineering Wiley New York. Mathworld http mathworld.wolfram.com AnalyticFunction.html. Sabin W. E. and E. O. Schoenike 1998 HF Radio Systems and Circuits SciTech Mendham NJ. Schwartz M. 1980 Information Transmission Modulation and Noise 3rd ed. McGraw-Hill New York. Van Valkenburg M. E. 1982 Analog Filter Design Oxford University Press New York. Williams A. B. and F. J. Taylor 1995 Electronic Filter Design Handbook 3rd ed. McGraw-Hill New York. APPENDIX Additional Discrete-Signal Analysis and Design Information This brief Appendix will provide a few additional examples of how Math-cad can be used in discrete math problem solving. The online sources and Mathcad User Guide and Help F1 are very valuable sources of information on specific questions .
