Effective adaptive filtering techniques
First Claim
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1. An apparatus, comprising:
- a noise calculation module to determine a noise level of an input signal;
a boundary setting module to set a reduced constellation boundary interval based on the noise level; and
an equalizer to perform adaptive equalization on the input signal in accordance with the reduced constellation boundary interval.
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Abstract
A noise level of an input signal is determined by a noise calculation module. based on the noise level, a boundary setting module sets a reduced constellation boundary interval. This reduced constellation boundary interval is employed by an equalizer to perform adaptive equalization of the input signal.
25 Citations
20 Claims
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1. An apparatus, comprising:
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a noise calculation module to determine a noise level of an input signal;
a boundary setting module to set a reduced constellation boundary interval based on the noise level; and
an equalizer to perform adaptive equalization on the input signal in accordance with the reduced constellation boundary interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising:
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a noise calculation module to determine a noise level of an input signal;
a boundary setting module to set a reduced constellation boundary interval based on the noise level, the boundary setting module including a plurality of stored boundary intervals for selection as the reduced constellation boundary interval, wherein each stored boundary interval corresponds to a range of noise levels;
one or more filters, each having a plurality of coefficients; and
a decision module to determine, based on the reduced constellation boundary interval and one or more soft symbols associated with the input signal, whether to adapt the coefficients of the one or more filters.
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11. A method, comprising:
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determining a noise level of an input signal;
setting a reduced constellation boundary interval based on the noise level; and
performing adaptive equalization on the input signal in accordance with the reduced constellation boundary interval. - View Dependent Claims (12, 13, 14, 15)
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16. An article comprising a machine-readable storage medium containing instructions that if executed enable a system to:
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determine a noise level of an input signal;
set a reduced constellation boundary interval based on the noise level; and
perform adaptive equalization on the input signal in accordance with the reduced constellation boundary interval. - View Dependent Claims (17, 18, 19, 20)
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Specification