Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2004-09-24
2008-11-18
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S378000
Reexamination Certificate
active
07453394
ABSTRACT:
A device includes an antenna for receiving an incoming signal. A multiplier multiplies the incoming signal with an output from a carrier generator in order to mix down signal the incoming signal. The output of the multiplier is provided to correlators for sequential correlation with a replica code of the mixed down signal provided from a code generator, in order to produce correlation data including I (imaginary) and Q (real) channels. The correlation data is then passed to a signal processor which adjusts appropriately both the code generator and the carrier generator to provide accurate position measurement in indoor environments with multiple diffuse reflections.
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Belk Michael E.
Koninklijke Philips Electronics , N.V.
Liu Harry
Tarcza Thomas H.
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