Method for transmitting radio signals and receiver for receiving radio signals
US6822953B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2000 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for transmitting radio signals and a receiver for receiving radio signals are described which are used to present a radio station which is transmitted on multiple frequencies with the data on the frequency that has the best signal quality. Via received radio signals the receiver is provided a list of all the frequencies on which radio stations are transmitted, the receiver checking each frequency to determine whether the frequency belongs to the radio station selected by the user and whether the signal quality is better than that which is used for the presentation of the radio station. Test symbols having pilots and useful data signals are used to determine the signal quality. An identification number for the radio station is determined from the useful data signals of the test symbols before the signal quality is checked and a channel estimate is made via the pilots. The test symbols are modulated with coherent QPSK. A test symbol is recognized in the data flow by a different protective interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.