| US 7,526,048 B2 | ||
| Energy threshold selection for UWB TOA estimation | ||
| Zafer Sahinoglu, Watertown, Mass. (US); and Ismail Guvenc, Somerville, Mass. (US) | ||
| Assigned to Mitsubishi Electric Research Laboratories, Inc., Cambridge, Mass. (US) | ||
| Filed on Aug. 11, 2005, as Appl. No. 11/202,006. | ||
| Prior Publication US 2007/0036241 A1, Feb. 15, 2007 | ||
| Int. Cl. H04L 27/00 (2006.01) | ||
| U.S. Cl. 375—316 | 9 Claims |
| 1. A method for selecting an energy threshold for a radio signal, comprising:
receiving a radio signal in a radio receiver, in which the radio signal is a wide band signal;
sampling periodically an energy of the radio signal as samples;
determining a kurtosis of the energy of the samples, the kurtosis being a ratio of a fourth moment of the signal and a square
of a second moment of the signal; and
selecting an energy threshold based on the kurtosis in a threshold selector.
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