Computationally efficient demodulation for differential phase shift keying
US7477707B2 · kind B2 · utility
10Cited by
15References
20Claims
0Family size
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Key dates
| Filing date | Jul 10, 2003 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jul 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A DPSK demodulator demodulates DPSK signals in a computationally efficient manner to reduce the power requirements of the DPSK demodulator. A DPSK signal is received, digitized, converted to its in-phase (I) and quadrature (Q) components and filtered to remove noise. The I and Q components are processed to determine a relative phase and frequency offset. The phase is adjusted using the frequency offset. The adjusted phase is converted to an absolute phase, which is then mapped to a symbol representative of one or more bits of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.