Systems and methods for using a non-binary soft output viterbi algorithm
AssigneeMarvell International Ltd.
InventorNitin Nangare
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for generating a likelihood value. A detector identifies a winning path through a trellis and a plurality of losing paths through the trellis and computes path metric differences within the trellis based on the winning path and at least some of the plurality of losing paths. The detector calculates a pair of error metrics based on the path metric differences and determines the likelihood value based on a difference between the pair of error metrics.
Claims20
A method of generating a likelihood value which detects an error, the method comprising:
- identifying, by at least one circuitry a winning path through a trellis and a plurality of losing paths through the trellis;
- computing, by the at least one circuitry, path metric differences within the trellis based on the winning path and at least some of the plurality of losing paths;
- calculating, by the at least one circuitry, a pair of error metrics based on the path metric differences;
- and
- determining, by the at least one circuitry, the likelihood value based on a difference between the pair of error metrics to detect an error in data transmitted through a channel.
A detector comprising circuitry, which detects an error and is communicatively coupled to a memory, wherein the circuitry comprises:
- detecting circuitry which:
- identifies a winning path through a trellis and a plurality of losing paths through the trellis;
- computes path metric differences within the trellis based on the winning path and at least some of the plurality of losing paths;
- traceback circuitry which calculates a pair of error metrics based on the path metric differences;
- and
- computation circuitry which determines a likelihood value based on a difference between the pair of error metrics to detect an error in data transmitted through a channel.
Dependencies are inferred from the claim text.