Apparatus and method for signal quality measurement on GFSK signals
US8243781B2 · kind B2 · utility
2Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Dec 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2017
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention discloses an effective apparatus and method to measure the received signal quality for a GFSK modulated signal with (or without) an unknown modulation index. The signal quality measurements are based on the decoded (unknown or known) bits and the trellis of the frequency discriminator output. This trellis is pre-calibrated with a reference Rx. The transmitted modulation index is also accurately estimated in this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.