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US 8,718,126 B2Granted
Adaptive equalizer and adaptive equalizing method
AssigneeFujitsu Limited
InventorTszshing Cheung
Life of this patent
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Abstract
An adaptive equalizer includes an equalization circuit and an operation number change unit. The equalization circuit includes a plurality of cascade-coupled delay taps. The equalization circuit equalizes an input signal by adding calculation results of the plurality of delay taps. The operation number change unit changes a number of operations of the plurality of delay taps according to an equalization error of the equalization circuit.
Claims18
An adaptive equalizer comprising:
- an equalization circuit, which includes a plurality of delay taps which are cascade-coupled, to equalize an input signal by adding up calculation results of the plurality of delay taps;
- and
- an operation number change circuit to change a number of operations of the plurality of delay taps according to an equalization error of the equalization circuit,
- wherein the operation number change circuit reduces the number of operations of the delay tap until a reduction amount of the equalization error, which is obtained when the number of operations of the delay tap is reduced, becomes equal to or less than a prescribed value.
1 more element
An adaptive equalizing method comprising:
- equalizing an input signal by adding a calculation result with respect to the input signal of a plurality of delay taps which are cascade-coupled;
- and
- changing a number of operations of the plurality of delay taps according to an equalization error that occurs when the input signal is equalized,
- wherein the reducing the number of operations of the delay tap until a reduction amount of the equalization error, which is obtained when the number of operations of the delay tap is reduced, becomes equal to or less than a prescribed value.
1 more element
Dependencies are inferred from the claim text.