| US 7,548,576 B2 | ||
| Self organization of wireless sensor networks using ultra-wideband radios | ||
| Farid U. Dowla, Castro Valley, Calif. (US); Franak Nekoogar, San Ramon, Calif. (US); and Alex Spiridon, Palo Alto, Calif. (US) | ||
| Assigned to Lawrence Livermore National Security, LLC, Livermore, Calif. (US) | ||
| Filed on Jun. 24, 2005, as Appl. No. 11/165,867. | ||
| Claims priority of provisional application 60/583167, filed on Jun. 24, 2004. | ||
| Prior Publication US 2005/0286610 A1, Dec. 29, 2005 | ||
| Int. Cl. H04B 1/69 (2006.01) | ||
| U.S. Cl. 375—130 [375/142; 375/147; 375/160; 375/152; 375/316; 375/340] | 14 Claims |
| 1. A self-organizing ultra-wideband (UWB) receiver, comprising:
a feedback amplifier having an input line and an output line, said input line electrically coupled to a common input line,
wherein said feedback amplifier, said input line and said output line are configured as a feedback loop so as to electronically
loop at least once, one or more transmitted pulse pairs received on said common input line, wherein said transmitted pulse
pairs have a predetermined encoded data and a predetermined symbol repetition period;
at least one delay electrically coupled to said common input line and configured to reproduce a predetermined lag interval
D of said one or more transmitted pulse pairs;
a signal multiplier electrically coupled to said at least one delay and said output line of said feedback loop for multiplying
delayed versions having said lag interval D of said transmitted pulse pairs and one or more of said electronically looped
transmitted pulse pairs;
a timing acquisition and tracking unit configured to determine a predetermined threshold value produced by said signal multiplier;
and
an integrator configured to integrate a product signal output by said timing acquisition and tracking unit, wherein an integrator
output is electronically analyzed to determine an output signal that is indicative of said predetermined encoded data.
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