Method and apparatus for estimating signal-to-noise ratio, noise power, and signal power
US7773681B2 · kind B2 · utility
7Cited by
5References
25Claims
0Family size
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Key dates
| Filing date | Aug 1, 2006 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Dec 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/336
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a wireless communication system, a method and apparatus for noise estimation of a received OFDM communication signal, wherein the signal comprises a data frame with a preamble having at least one long training field (LTF) containing two substantially similar OFDM symbols, comprise examining the LTF for substantially similar OFDM symbols. The noise power in the signal is estimated and the received signal power is measured. The signal to noise ratio is calculated and the signal power is determined by subtracting the noise power from the signal noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.