Method and apparatus for maximal-ratio combining of received frame data
US6661853B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0054
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for maximal-ratio combining of received frame data is provided. This technique increases the reliability of a communication network that includes multiple independent receivers. For example, when multiple independent receivers are not in agreement as to the received frame data (501, 502, 503), an embodiment of the invention provides a higher likelihood of correctly identifying the received frame data (501, 502, 503). A technique for determining a signal-to-noise ratio from a metric signal (504) derived from a decoder (701) in a receiver is provided. The signal-to-noise ratio may be characterized according to a polynomial estimate or stored in lookup table. The signal-to-noise ratio is used to apply a weighting (805) to “hard decision” data from the receiver to yield a weighted value (806). The weighted value is combined with weighted values from other receivers. The combined weighted values are applied to a data slicer (414) to yield received data (807).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.