Apparatus for decoding a signal and method thereof and a trellis coded modulation decoder and method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorSergey Zhidkov
Life of this patent
Estimating the term…
Abstract
An apparatus for decoding a signal and method thereof and a TCM decoder and method thereof. The TCM decoder may calculate a branch metric based on path metrics received from a plurality of other TCM decoders. The TCM decoder may be included within a joint TCM decoder which may be included within the apparatus. In an example, the apparatus may be a time-division multiplexed trellis-coded modulation (TDM-TCM) decoder. In another example, the apparatus may further include an equalizer feedback part.
Claims39
An apparatus for decoding a signal, comprising:
- an equalizer feedback part generating at least one error signal based on feedback symbol decision values for at least one of a plurality of surviving paths, calculating rank information ranked based at least in part on an interference level, and equalizing a reception signal based at least in part on at least one of the feedback symbol decision values to generate a reception symbol;
- and
- a joint trellis coded modulation (TCM) decoder including a plurality of TCM decoders, at least one of the plurality of TCM decoders calculating a branch metric based on the error signal, the reception symbol, the rank information and an operation of at least one other of the plurality of TCM decoders.
A method for decoding a signal, comprising:
- equalizing a reception signal to generate a reception symbol based on decision data associated with a previous reception symbol;
- calculating error signals associated with the decision data based on a most probable surviving path of the previous symbol and decision data associated with remaining surviving paths;
- and
- calculating branch metrics based on the reception symbol, the error signals, rank information associated with a plurality of trellis coded modulation (TCM) decoders, and path metrics for each of the plurality of TCM decoders.
A method for decoding a signal, comprising:
- calculating a main equalizer output signal and an error signal based on a reception signal and a decision value of a previous reception symbol;
- and
- calculating branch metrics of an active trellis coded modulation (TCM) decoder based on the main equalizer output signal, the error signal, and path metrics associated surviving paths of a plurality of inactive TCM decoders.
A method of branch metric calculation, comprising:
- calculating a branch metric based at least in part on a plurality of received path metrics.
A trellis coded modulation (TCM) decoder, comprising:
- a branch metric unit calculating a branch metric based at least in part on a received plurality of path metrics.
Dependencies are inferred from the claim text.