Out-of-channel received signal strength indication (RSSI)...

Details Out-of-channel received signal strength indication (RSSI)... Out-of-channel received signal strength indication (RSSI)...

2011-07-12

2011-07-12

Nguyen, Lee (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C375S345000

Reexamination Certificate

active

07979041

ABSTRACT:
The signal strength of an out-of-channel interferer is estimated by measuring the transition density of the sign of the down-converted signal. RF interferers at a higher or lower frequency than the desired RF signal appear as high frequency content in the down-converted signal, thus increasing the likelihood of zero-crossings.

REFERENCES:
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patent: 6498926 (2002-12-01), Ciccarelli et al.
patent: 6961552 (2005-11-01), Darabi et al.
patent: 7079825 (2006-07-01), Wieck
patent: 7212798 (2007-05-01), Adams et al.
patent: 2007/0047670 (2007-03-01), Chen
patent: 2008/0018508 (2008-01-01), Filipovic et al.

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