Passive Equalization of Wideband Communication Systems
Abstract
This report describes a technique that produces high-performance passive equalization networks for wideband communication systems. The relationship between the time-domain and frequency-domain performance of a simple but important class of networks is derived. The results of this analysis provide an estimate of the precision of equalization required in the frequency domain, given the requirements for waveform quality in the time domain. The effects of equalization magnitude and phase errors on a system transfer function are described, and the optimum weighting function for the least-mean-square- error minimization of magnitude and phase errors is derived. An example is given of the baseband equalization of a 220-Mbit/sec 4-ary FSK optical communication system. High-quality equalization is achieved using this technique over a frequency range of DC to approximately 1 GHz using simple, economical networks. Appendices are provided, describing the APL computer functions that were written to optimize and synthesize the filter hardware.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 22, 1991
- Accession Number
- ADA236813
Entities
People
- Mark L. Stevens
Organizations
- Massachusetts Institute of Technology