| US 7,577,087 B2 | ||
| Faster fine timing operation in multi-carrier system | ||
| Arto Palin, Viiala (Finland) | ||
| Assigned to Nokia Corporation, Espoo (Finland) | ||
| Appl. No. 10/563,085 PCT Filed Jun. 30, 2003, PCT No. PCT/FI03/00529 § 371(c)(1), (2), (4) Date Jun. 05, 2006, PCT Pub. No. WO2005/002164, PCT Pub. Date Jan. 06, 2005. |
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| Prior Publication US 2007/0053473 A1, Mar. 08, 2007 | ||
| Int. Cl. H04J 11/00 (2006.01) | ||
| U.S. Cl. 370—210 [370/206] | 25 Claims |
| 1. A method comprising:
defining, at a defining unit, an energy of pilot carriers in a multi-carrier signal in respect of an estimated guard interval
position of said signal, and
based on said energy, selecting a position for a time domain to frequency domain transform window of said signal, wherein
the selecting is based on an energy ratio between energy sample inside the estimated guard interval position and energy sample
outside the estimated guard interval position.
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