Linear approximation of a complex number magnitude
AssigneeTexas Instruments Incorporated
InventorsShailesh JOSHI, Karthik SUBBURAJ, Karthik RAMASUBRAMANIAN
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Abstract
An example device includes a multiplexer configured to receive a first digital output value indicating whether a first inequality condition with respect to first and second input values is true or false, and a second digital output value indicating whether a second inequality condition with respect to the first and second input values is true or false. Such device further includes calculation circuitry coupled to the multiplexer and configured to receive the first and second input values and calculate an output value representative of a linear combination of the first and second input values as specified by a select signal that is based on the first and second digital output values.
Claims20
A device comprising:
- a first circuit configured to receive first and second input values and generate:
- a first digital output value indicating whether a first inequality condition with respect to the first and second input values is true or false, and
- a second digital output value indicating whether a second inequality condition with respect to the first and second input values is true or false;
- and
- a second circuit coupled to the first circuit, the second circuit configured to:
- receive a select signal that is based on the first and second digital output values, and
- output a result value that is:
- based on a first linear combination of the first and second input values when the select signal is a first value,
- based on a second linear combination of the first and second input values when the select signal is a second value, and
- based on a third linear combination of the first and second input values when the select signal is a third value.
A method comprising:
- receiving a first input value and a second input value;
- evaluating at least one of first and second inequality conditions with respect to the first and second input values to generate an evaluation result;
- and
- outputting a result value based on the evaluation result, wherein the result value is based on one of a first linear combination of the first and second input values, a second linear combination of the first and second input values, and a third linear combination of the first and second input values.
A device comprising:
- a multiplexer configured to receive a first digital output value indicating whether a first inequality condition with respect to first and second input values is true or false, and a second digital output value indicating whether a second inequality condition with respect to the first and second input values is true or false;
- and
- calculation circuitry coupled to the multiplexer and configured to receive the first and second input values and calculate an output value representative of a linear combination of the first and second input values as specified by a select signal that is based on the first and second digital output values.
Dependencies are inferred from the claim text.