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US 2002/0118725 A1Published application
System and method for estimating power
AssigneeQUALCOMM Incorporated
InventorSTEVEN MOLLENKOPF
Life of this patent
Estimating the term…
Abstract
A system and method for estimating the power of a signal. The signal is compared to and separated into a plurality of ranges. Each range is assigned a particular output value. The output values approximate the square of the input signal based on known characteristics of the input signal. A low pass filter is used to average a plurality of the output values.
Claims21
A digital power estimator for use in a wireless communications system comprising:
- separating means for separating an input signal into a plurality of ranges, each range being assigned a particular output value, the output values approximating a square of the input signal based on known characteristics of the input signal;
- and
- averaging means coupled to an output of said separating means for averaging a plurality of the output values from said separating means.
A satellite communications system comprising:
- at least one gateway;
- at least one user terminal;
- at least one satellite for providing a communications link between said gateway and said user terminal;
- a modulator within said gateway for modulating data to be sent to said user terminal via said satellite, wherein an output of said modulator comprises a subbeam;
- and
- means for estimating the power of the subbeam, including:
- separating means for separating an input signal into a plurality of ranges, each range being assigned a particular output value, the output values approximating a square of the input signal based on known characteristics of the input signal;
- and
- averaging means coupled to an output of said separating means for averaging a plurality of the output values from said separating means.
6 more elements
A method for estimating the power in a wireless communications system, comprising the steps of:
- comparing an input signal to a plurality of ranges, wherein each range corresponds to a particular one of a plurality of output values;
- assigning a particular output value to the input signal based on a result of said comparing step, wherein the output values represent an approximation of a square of the input signal based on known characteristics of the input signal;
- and
- averaging a plurality of the assigned output values.
1 more element
Dependencies are inferred from the claim text.