Noise variance estimation in wireless communications for diversity combining and log likelihood scaling
US8126072B2 · kind B2 · utility
28Cited by
5References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2009 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Feb 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present patent application comprises a method and means for demodulating symbols, comprising converting an OFDM symbol from a time domain to a frequency domain, selecting pilot tones, making a soft decision based on received data, and estimating a channel frequency response. In another example, the method and means further comprises selecting guard tones. In another example, the method and means further comprises generating channel estimates for in-band and band-edge pilot tones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.