Optical Wireless MIMO Conditioning for Higher Data Transfer Rates

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Solution Overview

Problem

Existing optical wireless communication (OWC) systems face challenges in achieving high data transfer rates due to limitations in the use of multiple input multiple output (MIMO) configurations, particularly in optical wireless communication (OWC) components, which differ from radio frequency (RF) implementations.

Innovation Solution

The integration of MIMO devices designed for RF communication into OWC systems, utilizing conditioning circuitry to process signals for transmission using OWC transmitters, allowing for improved data transfer rates with a reduced number of transmitters and receivers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If MIMO configurations are used in OWC systems, then data transfer rates are improved, but device complexity increases

Engineering Contradiction:
Improvedata transfer rateVSAvoidMIMO configuration complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies universality by enabling OWC components to perform multiple functions - the same optical transmitters and receivers are used both for traditional OWC communication and for MIMO spatial multiplexing operations. This allows the system to achieve high data transfer rates through MIMO configurations without requiring separate dedicated hardware components, thereby improving productivity while managing device complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements parameter changes by modifying the operational parameters of existing OWC components rather than changing their fundamental structure. By adjusting modulation schemes, spatial stream configurations, and signal processing parameters, the system achieves enhanced data transfer rates through MIMO while avoiding the complexity increase that would result from adding new hardware components

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If the number of transmitters and receivers is reduced, then device complexity is lowered, but data transfer rates decrease

Engineering Contradiction:
Improvenumber of transmitters and receiversVSAvoiddata transfer rate
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent applies mechanics substitution by replacing physical multiplication of hardware components with signal processing and spatial multiplexing techniques. Instead of increasing the number of physical transmitters and receivers, the system uses conditional signal routing and spatial stream processing to achieve high data transfer rates, thereby substituting mechanical/hardware complexity with computational complexity

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

Solution Approach 2:

The patent implements another dimension by introducing spatial dimensionality through MIMO configurations. Multiple data streams are transmitted simultaneously over the same physical channel by exploiting spatial separation and signal processing, effectively adding a spatial dimension to the communication system. This allows high data transfer rates to be achieved without proportionally increasing the number of physical transmitters and receivers

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

This approach enables high data transfer rates in OWC systems by effectively utilizing MIMO devices and conditioning circuitry to optimize signal transmission, overcoming limitations in existing OWC configurations.

Implementation Method 1

at least one OWC transmission device comprising at least one transmitter for transmitting light and configured to be responsive to the at least one conditioned signal to transmit light representative of the data stream(s)

Methodology Applied
Scientific EffectLight modulation: Phase Modulation

Data Source

PatentUS12368509B2Optical wireless communication system and method
Publication Date: 2025.07.22 PURELIFI
  • US12368509B2 patent drawing
  • US12368509B2 patent drawing
  • US12368509B2 patent drawing

AI summary

An optical wireless communication (OWC) system comprises:a multiple input multiple output (MIMO) device configured to provide a plurality of signals each representing a respective data stream;conditioning circuitry configured to receive the plurality of signals from the MIMO device and process the plurality of signals to produce at least one conditioned signal representative of the data stream(s) and suitable for transmission using an OWC transmission device;an OWC transmission device comprising at least one transmitter for transmitting light and configured to be responsive to the at least one conditioned signal to transmit light representative of the data stream(s) using the at least one transmitter.