Systems and methods for signal modulation and demodulation using phase
US8107551B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jun 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2626
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Certain embodiments provide a system for recovering data from at least one signal. The system can include an analog-to-digital converter (ADC) and in-phase/quadrature (IQ) generator component that can sample a signal recovered from a communication medium to generate a first signal sample and a second signal sample. A Fast Fourier Transform (FFT) component can process the first signal sample to generate a first signal phase and process the second signal sample to generate a second signal phase. A phase difference calculation component can determine a phase difference between the first signal phase and the second signal phase, determine a bit value represented by the signal based on the phase difference, and output the bit value to an end device coupled to the phase difference calculation component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.