Demodulation apparatus
US6593805B2 · kind B2 · utility
4Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | May 9, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0029
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A demodulation apparatus of the present invention comprises: an A/D converter for sampling and quantizing a baseband signal; a transversal filter having time-shifted tap coefficients; a decision unit for decoding the signal which has undergone the transversal filter; and a decision point estimation unit for instructing the transversal filter to select the tap coefficient to be selected based on information from the decision unit. Thus, the demodulation apparatus can operate at the same frequency as a sampling frequency of the A/D converter and can perform decision with accuracy equivalent to an arbitrary oversampling number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.