Back to results
US 7,479,837 B2Granted
Noise signal generation by mapping random words
AssigneeAgilent Technologies, Inc.
InventorsMartin Muecke, Joachim Moll, Marcus Mueller
Life of this patent
Estimating the term…
Abstract
A noise signal generator includes a random word generator for generating a sequence of random words, each word representing an input value, a mapping unit for receiving the sequence of random words, mapping each input value to an output value of according to a probability distribution function, and providing a corresponding sequence of output values, and a digital-to-analog converter for generating a noise signal based on the output values.
Claims10
A noise signal generator, comprising:
- a random word generator configured for generating a sequence of random words, each word representing an input value,
- a mapping unit configured for receiving the sequence of random words, mapping each input value to an output value according to a probability distribution function, and providing a corresponding sequence of output values, and
- a digital-to-analog converter configured for generating a noise signal based on the output values,
- wherein the mapping unit comprises a first mapping circuit configured to map each input value to an interim value according to a first mapping function, and a second mapping circuit configured to map each interim value to an output value according to a second mapping function.
1 more element
A method for generating a noise signal comprising:
- generating a sequence of random words, each word representing an input value,
- mapping each input value to an output value of according to a probability distribution function, and providing a corresponding sequence of output values, and
- generating a noise signal based on the mapped values by performing a digital-to-analog conversion,
- wherein the mapping is performed by a mapping memory and the mapping comprises:
- determining an amplitude distribution over the noise signal range of the noise to be generated,
- determining an integral of the amplitude distribution over the noise signal range, and
- storing the integral of the amplitude distribution over the noise signal range into the memory.
4 more elements
Dependencies are inferred from the claim text.