Bit Distribution Across Unequal FEC Units for Throughput Scaling

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Solution Overview

Problem

Existing signal processing devices face inefficiencies in transmission due to the inability to flexibly adjust error correction processing throughput without increasing circuit size, particularly when handling high-throughput transmission signals encoded by probabilistic shaping.

Innovation Solution

A signal processing device with a distributing unit that allocates bit sequences to correcting units with different processing performance, allowing error correction processing to be applied based on the number of bits and error rate characteristics, and a control unit to adjust operating frequencies, thereby improving transmission efficiency without increasing circuit size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple forward error correcting units with different throughput capabilities are provided, then error correction processing can be performed at various throughputs, but the circuit size increases and transmission efficiency cannot be improved

Engineering Contradiction:

Improveerror correction throughput adaptabilityVSAvoidcircuit size

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bit sequence is divided into multiple parts and distributed to different correcting units based on their processing capabilities. The distributing unit segments the input bit stream and assigns portions to appropriate correcting units, allowing the system to handle variable throughputs without requiring all correcting units to operate simultaneously at maximum capacity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The distributing unit dynamically selects which correcting units to use and how to distribute bit sequences based on real-time throughput requirements and the processing performance of available correcting units. This dynamic allocation allows the system to adapt to changing transmission conditions without physical reconfiguration.

Inventive Principle:

Principle #15Dynamics

2Device complexity

If a single forward error correcting unit is used, then the circuit size is reduced, but the unit cannot flexibly change the throughput of error correction processing

Engineering Contradiction:

Improvecircuit sizeVSAvoiderror correction throughput flexibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

Multiple correcting units with different processing performances are provided, and the distributing unit can allocate bit sequences to different units based on throughput requirements. This allows the system to use a fixed set of hardware resources to fulfill multiple throughput requirements, achieving versatility without proportional increases in circuit size.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system changes the operational parameters of the correcting units by adjusting which units are active and how bit sequences are distributed among them. By varying the distribution ratio and selecting different correcting units based on their processing capabilities, the system achieves flexible throughput adjustment without hardware modifications.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If the throughput of the encoded transmission signal is increased, then transmission efficiency is improved, but the forward error correcting unit requires higher processing performance

Engineering Contradiction:

Improvetransmission throughputVSAvoidcorrecting unit processing performance

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

High-throughput bit sequences are segmented and distributed across multiple correcting units with different processing capabilities. This allows the system to handle high throughput requirements by parallel processing across multiple units rather than requiring a single unit with extremely high processing performance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple correcting units are combined to process different portions of the bit sequence simultaneously. The distributing unit coordinates the combined output from multiple correcting units to achieve overall high throughput while each individual unit operates within its processing capabilities.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11671119B2Signal processing apparatus and signal processing method

Publication Date: 2023.06.06 NIPPON TELEGRAPH & TELEPHONE CORP

AI summary

A signal processing device includes a distributing unit and a plurality of correcting units with different processing performance, the distributing unit distributes a bit sequence having a first number of bits to the first correcting unit, and a bit sequence having a second number of bits less than the first number of bits to the second correcting unit having lower processing performance than the first correcting unit, the first correcting unit applies error correction processing to the bit sequence having the first number of bits distributed to the first correcting unit, and the second correcting unit applies error correction processing to the bit sequence having the second number of bits distributed to the second correcting unit.