Systems and methods for auto scaling in a data processing system

摘要

Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit having a data detection circuit is disclosed that includes: a scaling circuit, a soft output calculation circuit, and a factor calculation circuit. The scaling circuit is operable to scale a branch metric value by a scaling factor to yield a scaled output. The soft output calculation circuit is operable to calculate a soft output based at least in part on the scaled output. The factor calculation circuit operable to modify the scaling factor based at least in part on the soft output.

主权项

1. A data processing circuit, the circuit comprising:
a data detection circuit including:
a metric scaling circuit operable to scale a branch metric value by a first scaling factor to yield a scaled output;a soft output calculation circuit operable to calculate a soft output based at least in part on the scaled output;a factor calculation circuit operable to modify the scaling factor based at least in part on the soft output;a soft output scaling circuit operable to scale the soft output by a second scaling factor to yield a scaled soft output; a data decoding circuit operable to apply a data decoding algorithm to the scaled soft output to yield a decoded output; and a decoded output scaling circuit operable to scale the decoded output by a third scaling factor to yield a scaled decoded output, wherein the third scaling factor is the inverse of the second scaling factor.