Dynamic error quantizer tuning systems and methods
US11239909B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2020 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Oct 23, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/697
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Dynamic error-quantizer tuning systems and methods prevent misconvergence to local minima by using a dynamic quantizer circuit that controls reference voltages of three or more comparators that are independently adjusted to modify the transfer function of the dynamic quantizer circuit. A weighted sum of the comparator outputs is subtracted from the input to form an error signal in a control loop. The ratio of the reference voltages is chosen to reduce or eliminate local minima during a convergence of the control loop and is set to values that minimize a mean squared error signal with respect to discrete modulation states of the input after the convergence of the control loop is complete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.