Analog Coding.
Abstract
The report is concerned with a systematic approach to the development and understanding of nonlinear modulation techniques. Rate distortion theory is used as the basis of determining the potential improvement which is possible by efficient utilization of available bandwidth. It is shown that the performance of a typical communication link could be improved by orders of magnitude through proper modulator/demodulator design. The performance of modulation techniques are evaluated and are compared with applicable bounds. The technique of minimizing the upper bound on the distortion is applied to establish what is the optimum modulator within the class of a certain structure. Further investigation in this area is recommended. Results indicate that to achieve theoretically attainable performance, the modulator must not only be nonlinear but must also make efficient use of memory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0721228
Entities
People
- Herbert Gish
- Julian J. Bussgang