User equipment for detecting short codes
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United States of America Patent
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-
Sep 12, 2006
Issued Date -
N/A
app pub date -
Jun 4, 2004
filing date -
Oct 8, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A receiver employing CDMA techniques estimates background noise based on a periodically updated code. The transmitted signal includes a periodically updated code of a predetermined type and wherein the received signal has CW interference in addition to the transmitted signal. The decision circuit determines if a value representing the likelihood of detection of the code exceeds a predetermined threshold. In the case of a pilot signal not being detected within a predetermined time period which corresponds to code update period, the background noise estimator obtains a new background estimation.
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Family
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