Signal demodulation method and device
US9172500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Oct 16, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/38
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a signal demodulation method and device. The method includes: obtaining a symbol probability parameter, where the symbol probability parameter comprises: an amplitude ry and a phase angle φy of a receive signal, an amplitude rxand a phase angle φxof each constellation point xj in a decision constellation point set, and a standard deviation σn of Gaussian noise and a standard deviation πθ of phase noise; calculating, according to the symbol probability parameter, a symbol probability that a transmit signal is each constellation point xj in the decision constellation point set; and performing demodulation according to the symbol probability, and outputting demodulation information. The present invention improves an anti-phase-noise capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.