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US 7,685,494 B1Granted
Error correction coding for varying signal-to-noise ratio channels
AssigneeMarvell International Ltd.
InventorsNedeljko Varnica, Gregory Burd, Zining Wu
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Abstract
An error rate sensitive error correction (ERSEC) system that applies a level of error correction that is inversely related to susceptibility to error as indicated by a signal-to-noise ratio (SNR) profile of a channel. The SNR profile is estimated, detected or retrieved from an external source. The ERSEC system can be used with any channel for which the SNRs vary spatially, temporally or both.
Claims25
A method for error correction coding, comprising:
- obtaining a signal-to-noise ratio (SNR) profile for a channel that includes different SNR domains;
- assigning at least two portions of a codeword to different SNR domains of the channel by a controller;
- ordering the SNR domains according to SNR magnitudes;
- and
- allocating by the controller higher levels of error correction to portions of the codeword that are assigned to the SNR domains having smaller SNR magnitudes.
2 more elements
An error rate sensitive error correction device, comprising:
- a memory that stores a signal-to-noise ratio (SNR) profile for a channel that includes different SNR domains;
- and
- a controller coupled to the memory, the controller:
- assigns at least two portions of a codeword to different domains of the channel;
- orders the SNR domains according to SNR magnitudes;
- and
- allocates higher levels of error correction to portions of the codeword that are assigned to the SNR domains having smaller SNR magnitudes.
4 more elements
An error rate sensitive error correction device, comprising:
- means for obtaining a signal-to-noise ratio (SNR) profile for a channel that includes different SNR domains;
- means for assigning at least two portions of a data codeword to different SNR domains of the channel;
- means for ordering the SNR domains according to SNR magnitudes;
- and
- means for allocating higher levels of error correction to portions of the codeword that are assigned to the SNR domains having smaller SNR magnitudes.
2 more elements
Dependencies are inferred from the claim text.