Demodulation technique for GFSK and DPSK
US8090060B2 · kind B2 · utility
1Cited by
26References
18Claims
0Family size
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Key dates
| Filing date | May 4, 2007 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | Feb 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03426
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A technique for low-complexity high-performance coherent demodulation of GFSK signals involves utilizing a novel phase and frequency tracking mechanism coupled with a trellis search technique to track signal memory in the demodulation process. A method according to the technique may include modeling modulation based upon a trellis. The method may further include estimating unknown parameters, selecting a maximum likelihood path through the trellis, and mapping the maximum likelihood path to an output bit sequence. The technique is also applicable to DSPK and other applicable known or convenient protocols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.