Method and apparatus for channel detection
AssigneeThomson Licensing
InventorsXiao-Ming Chen, Oliver Theis
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Abstract
The invention proposes a method for joint detection and channel decoding of binary data employing a trellis-based detector where the trellis describes RLL encoding, NRZI preceding, the influence of the channel, and PR equalization. In order to improve performance for the case of exchanging soft information with an outer soft-in soft-out channel decoder or ECC decoder under the presence of correlated noise, the trellis is extended to also comprise and model a Noise Prediction.
Claims8
Method for joint detection and channel decoding of binary data, applying a trellis-based detector in which a single super-trellis describes the signal processing of an RLL encoding stage, an NRZI preceding stage, the channel, a PR equalizer stage, and a Noise predictor stage.
A SISO trellis-based detector for joint channel detection and RLL decoding, whose trellis comprises the combination of a PR channel trellis and an RLL code trellis, wherein the trellis also incorporates a noise prediction filter.
A method for joint data detection and channel or ECC decoding, wherein a data detection step that uses a trellis-based detector, and a channel or ECC decoding step that uses a SISO channel or ECC decoder are iteratively repeated according to a turbo principle, soft information is exchanged between the detection step and the decoding step in both directions, and the trellis of the data detection step incorporates a noise prediction filter.
Dependencies are inferred from the claim text.