Interferometric Frequency Modulation for Wireless Cooperative Interference

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Solution Overview

Problem

Conventional wireless communication systems face limitations in communication capacity and information processing rates due to interference avoidance techniques, which restrict the efficient use of wireless networks and spectrum resources.

Innovation Solution

The implementation of interferometric frequency modulation (IFM) allows for cooperative interference by aggregating and demodulating data from multiple wireless signals, eliminating the need for interference avoidance and reducing bandwidth requirements, enabling efficient data communication and processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If interference avoidance techniques (TDMA, FDMA, CDMA, CSMA) are used to reduce interference, then signal recognition reliability is improved, but communication capacity and information processing rates deteriorate

Engineering Contradiction:
Improvesignal recognition reliabilityVSAvoidcommunication capacity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent converts harmful interference into a beneficial resource by enabling multiple transmitters to transmit simultaneously on the same frequency, where their signals interfere constructively at the receiver to convey aggregated information. This transforms the traditional harmful effect of interference into the core mechanism for achieving high-capacity communication without requiring time or frequency separation.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If interference avoidance techniques are used, then signal quality is improved, but bandwidth utilization deteriorates

Engineering Contradiction:
Improvesignal qualityVSAvoidbandwidth utilization
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple wireless signals that would traditionally be separated in time or frequency into a single simultaneous transmission on the same frequency band. By combining these signals at the receiver and using advanced demodulation techniques, the system achieves efficient use of bandwidth while maintaining signal quality through cooperative interference exploitation.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If conventional demodulation techniques are used on interfered signals, then device complexity is reduced, but data recovery accuracy deteriorates

Engineering Contradiction:
Improvedemodulation complexityVSAvoiddata recovery accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent employs dynamic demodulation techniques that adapt to the interfered signal characteristics. The receiver dynamically estimates parameters of the combined signal and adjusts demodulation strategies accordingly, enabling accurate data recovery from simultaneously transmitted interfered signals while managing computational complexity through intelligent signal processing.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

IFM enhances communication capacity and data processing efficiency by harnessing cooperative interference, reducing bandwidth needs and allowing simultaneous transmissions without expanding the symbol space, thus optimizing the use of scarce spectrum resources.

Implementation Method 1

receiving multiple second wireless signals simultaneously (where the second wireless signals interfere to produce an interfered signal)

Methodology Applied
Scientific EffectInterference: Interference

Data Source

PatentUS8351871B2Apparatus and method for interferometric frequency modulation to exploit cooperative interference in wireless communications
Publication Date: 2013.01.08 HONEYWELL INTERNATIONAL INC
  • US8351871B2 patent drawing
  • US8351871B2 patent drawing
  • US8351871B2 patent drawing

AI summary

A method includes receiving a first wireless signal and demodulating data in the first wireless signal using a first demodulation technique. The method also includes receiving multiple second wireless signals simultaneously (where the second wireless signals interfere to produce an interfered signal) and demodulating data in the interfered signal using a second demodulation technique. The method could also include (i) determining that a single transmitter transmitted the first wireless signal and selecting the first demodulation technique in response and (ii) determining that multiple transmitters transmitted the second wireless signals and selecting the second demodulation technique in response. Determining that the single transmitter transmitted the first wireless signal could include determining that a fundamental frequency of the first wireless signal is below a threshold. Determining that the multiple transmitters transmitted the second wireless signals could include determining that a fundamental frequency of the interfered signal is above the threshold.