Soft GPC Decoding with Early Termination for Lower Power

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Solution Overview

Problem

Decoders in communication networks consume excessive power due to multiple decoding iterations, which are often unnecessary after initial corrections, impacting power efficiency without significant performance improvement.

Innovation Solution

Implement an early termination method for soft decoding of generalized product codes, terminating decoding operations when syndromes for sign bits are zero, reducing the number of iterations and operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple decoding iterations are performed to reduce error, then decoding reliability is improved, but power consumption increases

Engineering Contradiction:

Improvedecoding reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements a feedback mechanism where the decoder checks syndromes after each iteration and terminates early when syndromes indicate successful decoding (all zeros), avoiding unnecessary additional iterations and reducing power consumption while maintaining reliability

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent makes the number of decoding iterations dynamic rather than fixed, allowing the decoder to adapt the iteration count based on the actual decoding progress and syndrome results, thereby optimizing power consumption for each specific decoding scenario

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a fixed number of decoding iterations is performed, then decoding complexity is reduced, but decoding performance deteriorates

Engineering Contradiction:

Improvedecoding complexityVSAvoiddecoding performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent uses syndrome feedback to determine when to terminate decoding, ensuring that a fixed iteration limit does not prematurely stop successful decodings while still providing a complexity bound for difficult cases

Inventive Principle:

Principle #23Feedback

3Use of energy by moving object

If early termination is implemented to reduce power consumption, then power consumption is reduced, but decoding accuracy may deteriorate

Engineering Contradiction:

Improvepower consumptionVSAvoiddecoding accuracy

Core Design Contradiction:

Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The patent uses syndrome feedback as an accuracy verification mechanism before termination, ensuring that early termination only occurs when decoding accuracy is confirmed to be sufficient, thus preventing premature termination of unsuccessful decodings

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12526072B2Power consumption reduction in soft decoding of generalized product codes

Publication Date: 2026.01.13 INFINERA CORP

AI summary

Systems and methods for more efficiently decoding generalized product codes (GPC) are described. A receiving device equipped with a decoder is configured to receive GPC-encoded signals and implement an early termination method to avoid executing multiple operations of the decoding scheme typically used by the receiving device. The receiving device can identify whether a particular condition is satisfied when decoding a signal, and if the condition is satisfied, can omit certain operations of the decoding scheme and thereby reduce power consumption. The particular condition can be satisfied when the syndromes for sign bits in a codeword associated with the received signal are zero.