A rapidly converging equalizer with variable tap weight adjusting coefficients
Abstract
In operating the transversal filter-type automatic equalizer, the tap weight adjusting coefficient is kept constant, while in the equalizer proposed in this paper, this coefficient is altered at every tap weight adjustment to minimize the adjustment error and thus achieve high-speed convergence. The coefficient is calculated from the convolution of the tap weight and input and the correlation between the tap output and the equalizer output errors. This equalizer is equipped with the tap weight adjusting coefficient calculation circuit and registers in addition to the conventional equalizer configuration. The convergence is about 2-4 times faster than that of the ordinary equalizer.
- Publication:
-
Electronics Communications of Japan
- Pub Date:
- June 1977
- Bibcode:
- 1977JElCo..60...77S
- Keywords:
-
- Adaptive Control;
- Automatic Control;
- Electronic Filters;
- Equalizers (Circuits);
- Maximum Likelihood Estimates;
- Network Synthesis;
- Convergence;
- Eigenvalues;
- Error Analysis;
- Instrument Errors;
- Optimization;
- Power Series;
- Pseudonoise;
- Signal Processing;
- Stochastic Processes;
- Weighting Functions;
- White Noise;
- Electronics and Electrical Engineering