Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
US7672383B2 · kind B2 · utility
34Cited by
1References
74Claims
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Key dates
| Filing date | Jan 28, 2005 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Noise variance estimation in wireless communications. Noise variance estimation includes receiving a signal including an OFDM symbol having, in-band tones including in-band pilot tones, and band-edge tones including band-edge pilot tones and guard tones, estimating an effective noise variance for the in-band tones using the in-band pilot tones and channel estimates for the in-band pilot tones, and estimating an effective noise variance for the band-edge tones using the band-edge pilot tones, channel estimates for the band-edge pilot tones, and the guard tones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.