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Samsung patents signal decoder that tweaks math to improve data accuracy

This patent describes a method for a receiver to decode digital signals by adjusting specific mathematical values called log likelihood ratios. It involves scaling certain data points and using reference values to refine the decoding process in two steps.

Why it mattersThis is a routine improvement to signal processing algorithms that helps devices interpret data more accurately, which is standard practice in telecommunications engineering.

In the filing’s own words

A receiver configured to receive a signal may include a symbol, the receiver may include: at least one memory storing instructions; and at least one processor configured to execute the instructions to: generate a first posteriori log likelihood ratio corresponding to a bit in the symbol based on a channel log likelihood ratio corresponding to the bit; apply a first scaled value to a first extrinsic log likelihood ratio in the first posteriori log likelihood ratio; generate a first priori log likelihood ratio by selectively using a first reference value based on a comparison result; generate a second posteriori log likelihood ratio corresponding to the bit based on the first priori log likelihood ratio and the channel log likelihood ratio; and decode the signal based on the second posteriori log likelihood ratio.

What exactly they claim (claim 1)

1. A receiver configured to receive a signal comprising a symbol, the receiver comprising: at least one memory storing instructions; and at least one processor configured to execute the instructions to: generate a first posteriori log likelihood ratio corresponding to a bit in the symbol based on a channel log likelihood ratio corresponding to the bit; apply a first scaled value to a first extrinsic log likelihood ratio in the first posteriori log likelihood ratio; generate a first priori log likelihood ratio by selectively using a first reference value based on a comparison result; generate a second posteriori log likelihood ratio corresponding to the bit based on the first priori log likelihood ratio and the channel log likelihood ratio; and decode the signal based on the second posteriori log likelihood ratio.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Receiver for adjusting log likelihood ratio and method of operating the same
Patent number
US12732212B2
Application number
18920540
Filed
Oct 18, 2024
Granted
Sep 8, 2026
Inventors
3
Claims
20

Classified under

H03M 13/1125 Electricity & electronicsH03M 13/112 Electricity & electronicsH03M 13/3905 Electricity & electronicsH03M 13/3927 Electricity & electronicsH03M 13/4146 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.