Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2005-03-23
2008-10-28
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S340000
Reexamination Certificate
active
07443934
ABSTRACT:
The strength of a signal which has been frequency-converted by an radiofrequency unit is measured, and the start of a signal detection processing is decided if the measured strength of a signal becomes greater than a predetermined threshold value. When the start of a signal detection processing is notified, the signal which has been frequency-converted by the radiofrequency unit is amplified. A correlation value for each sampling timing is generated from signals outputted from an analog-to-digital unit. A statistical processing is performed on the correlation values outputted from the matched filter unit, over a plurality of symbols. The correlation values on which the statistical processing has been performed is averaged. The averaged correlation value by a coefficient is multiplied. It is determined that a signal to be received has been detected if the maximum value from a selector is large.
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Japanese Office Action, with English Translation, issued in corresponding Japanese Patent Application No. JP 2004-085117, mailed on Dec. 11, 2007.
Nishimura Naoaki
Okita Tomokazu
Bocure Tesfaldet
McDermott Will & Emery LLP
Sanyo Electric Co,. Ltd.
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