Frequency error measuring apparatus and radio apparatus
US6052418A · kind A · utility
2Cited by
15References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 4, 1997 |
| Grant date | Apr 18, 2000 |
| Priority date | — |
| Expiry date | Feb 4, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0095
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a radio apparatus of such as digital cellular which transmit and receive audio signals upon coded, the frequency error can be detected easily and certainly even in the environment of high noise level. The frequency error .theta..sub.e is detected according to the detection result of the complex correlation value between the synchronizing signal and the standard signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.