Apparatus and method for estimating interference and noise in a communication system
US7623569B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2004 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Feb 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for estimating interference and noise power in an orthogonal frequency division multiplexing/orthogonal frequency division multiple access/discrete multi-tone (OFDM/OFDMA/DMT) system is disclosed. A correlator correlates a plurality of sub-carriers with a preset reference sequence on an element-by-element basis and outputs a result of the correlation. A signal noise producer calculates a difference between a correlation value associated with each of the plurality of sub-carriers output from the correlator and a correlation value produced from at least one adjacent sub-carrier and outputs a result of the calculation. An interference and noise power producer produce interference and noise power from the difference between the correlation values calculated by the signal noise producer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.