Patent · US Active

Soft-bit de-mapping device and method of generating soft bits for decoding

US8050362B2 · kind B2 · utility

3Cited by

1References

23Claims

0Family size

Assignee

Amicus Wireless Technology Ltd · KY

Inventors

Gwang-Hyun Gho · Cupertino, US
Kee-Bong Song · San Diego, US
Won-Joon Choi · Seojong-myeon, KR

Key dates

Filing date	May 24, 2008
Grant date	Nov 1, 2011
Priority date	—
Expiry date	May 20, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/0342
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A soft-bit de-mapping device and method of generating soft bits for decoding quantizes a log-likelihood ratio (LLR) value for a received value using functions bits and channel parameter bits to generate the soft bits. The function bits are generated by quantizing an LLR function for the received value, which includes modifying an original curve of the LLR function to a modified curve such that a segment of the original curve with the lowest slope is protected in the modified curve for a fixed equal quantization step-size. The channel parameter bits are generated by quantizing a channel parameter for the received value to generate channel.

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