Method and apparatus for decoding a phase encoded data signal
US6246729A · kind A · utility
34Cited by
16References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1998 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Sep 8, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for decoding a phase encoded data signal utilizes windowed data which is transformed into real and imaginary frequency components thereof. The real and imaginary frequency components are converted into phase and magnitude information. The magnitude information is used to calculate a threshold based upon a signal-to-noise ratio, and the phase of the data signal is corrected by identifying and sorting magnitude peaks. The data signal is differentially demodulated and the demodulated data is then multiplied by a correlation sequence so as to facilitate its being converted into a binary number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.