Neural Network Signal Matching for RF Accuracy

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Solution Overview

Problem

Conventional signal matching methods for RF signals fail to jointly optimize feature representation and similarity metrics, leading to inefficient and inaccurate matching results.

Innovation Solution

A signal matching apparatus employing a neural network that jointly optimizes signal representation based on a similarity measure, using a siamese or triplet network architecture with deep convolutional neural networks to compare RF signals with predefined reference data, providing a similarity metric indicating matching accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional feature extraction and similarity metric methods are used, then the matching process is simple and fast, but the feature representation and metric are not jointly optimized leading to inaccurate matching results

Engineering Contradiction:
Improvematching accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges feature extraction and similarity metric computation into a unified neural network model. The neural network simultaneously learns both the feature representation and the similarity metric through joint optimization, eliminating the need for separate feature extraction and metric calculation steps. This integration resolves the contradiction by achieving accurate matching through end-to-end learning while maintaining a cohesive system architecture.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces traditional mechanical feature extraction and manual metric selection with a neural network-based system that automatically learns optimal features and metrics. The neural network substitutes the conventional two-step process (extract features, then compute similarity) with a single integrated process that performs both functions through shared parameters, achieving both accuracy and efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If traditional separate feature extraction and similarity computation approaches are used, then the system is easier to implement, but computational resources are not optimized and matching efficiency is reduced

Engineering Contradiction:
Improvematching efficiencyVSAvoidcomputational resources
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action through pretraining the neural network with autoencoders to learn efficient feature representations before actual signal matching occurs. The neural network is pretrained to compress and represent signal features in an optimized manner, so that during real-time matching, the system only needs to compute similarities in the compressed feature space rather than processing raw signals, significantly reducing computational resources and improving efficiency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the parameters of the similarity computation by transforming signals into a compressed feature space through the neural network. Instead of computing similarity in the original high-dimensional signal space, the system computes similarity in the transformed feature space, which reduces computational complexity and energy consumption while maintaining or improving matching accuracy.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12182683B2Signal and/or spectrum analyzer device and method of signal matching
Publication Date: 2024.12.31 ROHDE & SCHWARZ GMBH & CO KG
  • US12182683B2 patent drawing
  • US12182683B2 patent drawing
  • US12182683B2 patent drawing

AI summary

A signal matching apparatus comprising at least one receiving unit adapted to receive a signal; at least one memory unit adapted to store predefined reference data and at least one neural network configured to compare a signal profile of the received signal and/or signal parameters derived from the received signal with reference data stored in said memory unit to determine a similarity between the received signal and the predefined reference data.