Patent · US Active

De-mapping technique with provision of probability information including a priori information

US9769001B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Swapnil Kudtarkar · Ulm, DE
Ansgar Scherb · Nuremberg, DE
Thomas Wagner · Kammerstein, DE

Key dates

Filing date	Apr 26, 2013
Grant date	Sep 19, 2017
Priority date	—
Expiry date	Apr 26, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L1/005
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A technique for de-mapping a point in a constellation diagram into a bit sequence is presented. The de-mapping provides for each bit of the bit sequence an output value with a sign of the output value indicating a bit value and a magnitude of the output value indicating probability information in the form of a distance to a decision boundary in the constellation diagram. A method aspect of the technique presented herein comprises receiving a signal indicative of a constellation point, wherein the constellation point represents a bit sequence having a most significant bit and at least one next significant bit, deriving a first output value for the most significant bit based on a first decision boundary, receiving a priori information, and deriving a second output value for the next significant bit based on the first output value, the a priori information and a second decision boundary.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.