Methods And Apparatus For Weighted Equalization
AssigneeRenesas Mobile Corporation
InventorMarkus Nentwig
Life of this patent
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Abstract
Systems and techniques for equalization of a response of a receiver. In one embodiment, a response of a device to a known signal is measured to generate a measured signal. A processor is operated to apply an initial weighting to the measured signal and the known signal. The processor is operated to iteratively perform the operations of constructing an equalizer based on the weighted signals, testing the performance of the equalizer on the measured signal, and adjusting weighting applied to the measured signal and the known signal, until the performance of the equalizer on the measured signal meets a predetermined criterion.
Claims20
A method comprising:
- measuring a response of a device to a known signal to generate a measured signal;
- operating a processor to apply an initial weighting to at least a given frequency component of the measured signal and at least said given frequency component of the known signal;
- and
- operating a processor to iteratively perform the operations of constructing an equalizer based on the weighted signals, testing the performance of the equalizer on the measured signal, and adjusting weighting applied to the measured signal and the known signal.
An apparatus comprising:
- a receiver configured to produce a response to a test signal;
- a measurement device configured to measure the receiver response to produce a measured signal;
- data storage configured to store the test signal and the measured signal;
- and
- a processor configured to:
- apply an initial weighting to at least a given frequency component of the measured signal and at least said given frequency component of the known signal;
- and
- iteratively perform the operations of constructing an equalizer based on the weighted signals, testing the performance of the equalizer on the measured signal, and adjusting weighting applied to the measured signal and the known signal.
A receiver comprising:
- an analog baseband filter;
- and
- an analog to digital converter,
- wherein the receiver is configured to perform equalization on an output of the analog to digital converter to approximate an inverse of a response of the analog baseband filter over a wanted signal bandwidth of a received signal processed by the receiver, said equalization implementing a stop-band attenuation of an adjacent channel component of the received signal and stop-band attenuation of an alias component of the received signal.
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Dependencies are inferred from the claim text.