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US 8,014,743 B1Granted
Methods and apparatus for calibrating received signal strength indicators
AssigneeBeken Corporation
InventorsRonghui Kong, Dawei Guo
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Abstract
This disclosure discloses methods and apparatus for calibrating received signal strength indicators.
Claims6
A method for calibrating a received signal strength indicator (RSSI) detector, comprising:
- measuring a maximum RSSI when the RSSI detector is exposed to a maximum radio frequency signal;
- calculating a bias factor based on the measured maximum RSSI including calculating an offset as:
- Offset
- =
- V
- threshold
- V
- range
- ×
- (
- V
- designed_RSSI
- -
- V
- measured_RSSI
- )
- where Vmeasured—RSSI is the measured maximum RSSI, Vdesigned—RSSI is a desired maximum RSSI, Vthreshold is a desired threshold, and Vrange is a desired power range;
- and
- biasing an output of the RSSI detector with a power loading based on the calculated bias factor.
16 more elements
A method for calibrating a received signal strength indicator (RSSI) detector, comprising:
- measuring a maximum RSSI when the RSSI detector is exposed to a maximum radio frequency signal;
- calculating a bias factor based on the measured maximum RSSI including calculating a slope bias as:
- Slope_Bias
- =
- V
- designed
-
-
- _
-
-
- RSSI
- -
- V
- max
-
-
- _
-
-
- power
- V
- measured
-
-
- _
-
-
- RSSI
- -
- V
- max
-
-
- _
-
-
- power
- where Vdesigned—RSSI is the desired maximum indicator value, Vmax—power is the desired maximum power level, and Vmeasured—RSSI is the measured maximum indicator value;
- and
- biasing an output of the RSSI detector with a power loading based on the calculated bias factor.
38 more elements
A received signal strength indicator (RSSI) detector, comprising:
- means for measuring a maximum RSSI when the RSSI detector is exposed to a maximum radio frequency signal;
- and
- means for calculating a bias factor based on the measured maximum RSSI and biasing an output of the RSSI detector with a power loading based on the calculated bias factor
- wherein the means for calculating a bias factor include means for calculating an offset as:
- Offset
- =
- V
- theshold
- V
- range
- ×
- (
- V
- designed
-
-
- _
-
-
- RSSI
- -
- V
- measured
-
-
- _
-
-
- RSSI
- )
- where Vmeasured—RSSI is the measured maximum RSSI, Vdesigned—RSSI is a desired maximum RSSI, Vthreshold is a desired threshold, and Vrange is a desired power range.
28 more elements
Dependencies are inferred from the claim text.