Method and apparatus for aligning a digital receiver
US5479452A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Sep 6, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J7/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method is used in a receiver (100) for aligning the receiver (100). The method has a step of intercepting and demodulating the FM signal, which includes data symbols. The method has a step of determining error rates, in which the error rates of at least two subsets of the data symbols are determined. Each subset includes a plurality of the data symbols modulated at a unique one of a plurality of frequency deviations. The at least two subsets include data symbols of two opposite polarities. The method has a step of generating a frequency control signal, in which the frequency control signal is determined based on the error rates. The method has a step of aligning a receiver section (105), in which the receiver section (105) is aligned to the FM signal by controlling a local oscillator (320)which is responsive to the frequency control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.