Method, arrangement and communication receiver for SNIR estimation
US7324783B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2002 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Mar 8, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/21
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method, arrangement (512) and communication receiver (500) for SNIR estimation of a received signal, by: deriving (512A) an estimation {circumflex over (Z)} of SNIR of the received signal in accordance with the relationwhere E represents mean value and r(t) represents the level of the received signal; and correcting (512B, 512C) the estimation {circumflex over (Z)} to produce a corrected estimation Z based on the relation Z=α({circumflex over (Z)})×{circumflex over (Z)}, where α({circumflex over (Z)}) represents a correction factor. The estimation may be corrected by calculating the correction factor, retrieving the correction factor from a predetermined table (512B) or retrieving the corrected estimation from a predetermined table. The correction may be effected by adding to a logarithmic estimation a logarithmic correction factor. This provides the advantage of improved performance under conditions of low signal to noise ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.