Monitoring and adjusting noise parameters
AssigneeLantiq Deutschland GmbH
InventorsBernd Heise, Vladimir Oksman
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Abstract
One embodiment of the present invention relates to a method of monitoring impulse noise. In the method, clusters of corrupted symbols in a stream of symbols are characterized in accordance with a cluster parameter associated with the clusters. Other methods and systems are also disclosed.
Claims14
A method of monitoring impulse noise, comprising:
- characterizing a number of solely non-overlapping clusters of symbols in a stream of symbols in accordance with a cluster parameter, where the non-overlapping clusters of symbols include a number of corrupted symbols wherein the cluster parameter identifies the number of corrupted symbols associated with the cluster;
- deriving an impulse noise protection parameter from the cluster parameter as a function of an observation time;
- and
- periodically updating the impulse noise protection parameter as a function of the observation time,
- where the cluster parameter is a multi-bit value having a pattern of binary ones and zeros, where the pattern of binary ones and zeros corresponds to a pattern of corrupted and uncorrupted symbols in the cluster, or
- where the cluster parameter employs a coding scheme indicating a number of consecutive corrupted symbols and a number of consecutive uncorrupted symbols.
A method of monitoring impulse noise, comprising identifying clusters of corrupted symbols in a stream of symbols in accordance with a cluster parameter related to a minimum duration between clusters of corrupted symbols, wherein identifying the clusters of corrupted symbols in accordance with the minimum duration between clusters comprises:
- finding a first symbol period relating to the minimum duration in the stream of symbols having no corrupted symbols therein;
- establishing a beginning of a cluster at a first corrupted symbol after the found first symbol period;
- finding a second symbol period relating to the minimum duration in the stream of symbols having no corrupted symbols therein;
- and
- establishing an end of the cluster at a last corrupted symbol before the found second symbol period.
A method of monitoring impulse noise, comprising:
- identifying clusters of corrupted symbols in a stream of symbols in accordance with a cluster parameter related to a maximum duration of a cluster, wherein identifying a cluster of corrupted symbols comprises:
- finding a first corrupted symbol in the stream of symbols;
- assigning the first corrupted symbol to the start of a first cluster;
- and
- assigning a predetermined number of consecutive symbols immediately after the first corrupted symbol to the first cluster, wherein the predetermined number of symbols corresponds to the maximum cluster duration.
A network device, comprising:
- a receiver configured to receive a stream of symbols over a multi-carrier channel supported by a transmission medium;
- where the receiver is configured to characterize a number of solely non-overlapping clusters of symbols in the stream of symbols in accordance with a cluster parameter, where the solely non-overlapping clusters of symbols include a number of corrupted symbols and wherein the cluster parameter identifies the number of corrupted symbols associated with the cluster,
- where the cluster parameter is a multi-bit value having a pattern of binary ones and zeros, where the pattern of binary ones and zeros corresponds to a pattern of corrupted and uncorrupted symbols in the cluster.
A method of monitoring impulse noise, comprising identifying clusters of corrupted symbols in a stream of symbols in accordance with a cluster parameter related to a minimum duration between clusters of corrupted symbols, wherein identifying a cluster of corrupted symbols comprises:
- finding a first symbol period having no corrupted symbols therein, wherein the first symbol period has a total duration that is greater than or equal to the minimum duration;
- finding a second symbol period spaced apart from the first symbol period and having no corrupted symbols therein, wherein the second symbol period has a total duration that is greater than or equal to the minimum duration;
- and
- assigning a number of consecutive symbols disposed between the first and second symbol periods to the cluster of corrupted symbols, wherein the number of consecutive symbols includes at least one corrupted symbol therein.
Dependencies are inferred from the claim text.