Method and apparatus for acquistion and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US7532693B1 · kind B1 · utility
38Cited by
40References
25Claims
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Key dates
| Filing date | May 8, 2007 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | May 8, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2695
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for estimating symbol timing of a guard interval in an orthogonal frequency division multiplexing receiver of a wireless local area network comprises receiving a preamble including a plurality of short training symbols; sampling said short training symbols of said preamble at a first rate; correlating a first short training symbol with a second short training symbol that is adjacent to said first short training symbol and generating a correlation signal; normalizing said correlation signal to generate a normalized correlation signal; and calculating a mean absolute difference of said normalized correlation signal.
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