| US 7,577,446 B2 | ||
| Weighted least square localization method exploiting multipath channel statistics for non-line-of-sight mitigation | ||
| Ismail Guvenc, Santa Clara, Calif. (US); and Chia-Chin Chong, Santa Clara, Calif. (US) | ||
| Assigned to NTT DOCOMO, Inc., Tokyo (Japan) | ||
| Filed on Aug. 01, 2007, as Appl. No. 11/832,558. | ||
| Claims priority of provisional application 60/821378, filed on Aug. 03, 2006. | ||
| Claims priority of provisional application 60/822127, filed on Aug. 11, 2006. | ||
| Claims priority of provisional application 60/823367, filed on Aug. 23, 2006. | ||
| Prior Publication US 2008/0032710 A1, Feb. 07, 2008 | ||
| Int. Cl. H04Q 7/20 (2006.01) | ||
| U.S. Cl. 455—456.2 [455/456.5; 455/506; 455/67.11; 455/67.16] | 15 Claims |
| 1. A method for localization of a mobile terminal communicating using ultra-wide band signals, comprising:
receiving signals transmitted between the mobile terminal and a plurality of fixed terminals;
for each received signal, using a statistical metric based on delays and amplitudes of one or more multipath components, determining
a likelihood that the received signal traveled a line-of-sight path; and
determining the position of the mobile terminal based on times-of-arrival of the received signals using a localization algorithm
based in part on the likelihoods of line-of-sight path for the received signals.
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