Polarizer-Based Reference Polarization for Wireless Channel Sensing
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Solution Overview
Problem
Existing wireless communication devices lack the capability to perform polarimetry sensing due to the absence of self-awareness of electromagnetic wave polarization and spatial orientation, leading to difficulties in channel estimation and environment sensing.
Innovation Solution
A system comprising a controller, polarizer device, and processors that control electromagnetic wave polarization to determine a reference polarization and perform channel estimation and sensing without requiring self-awareness of the device's polarization or spatial orientation, using a polarizer device to transform waves to known polarizations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication devices use conventional RF signal processing, then signal quality at the output of RF chain is improved, but sensing information is lost or distorted
Solution Approach 1:
The patent segments the electromagnetic wave information processing into two distinct paths: one for communication (conventional RF chain processing) and one for sensing (field domain processing). The sensing path extracts and processes the electromagnetic field components before they are converted to voltage signals, preserving the full three-dimensional vector information needed for sensing applications while maintaining conventional communication signal processing separately.
2Measurement precision
If polarimetry sensing is implemented in mobile devices, then sensing accuracy is improved, but device complexity increases due to required hardware facilities
Solution Approach 1:
The patent makes the existing antenna and RF chain in mobile devices serve dual functions: conventional communication and polarimetry sensing. By processing the electromagnetic field information in the field domain before voltage conversion, the system enables sensing capabilities using existing hardware components rather than requiring specialized sensing hardware, thus achieving multi-functionality without increasing device complexity.
3Ease of operation
If devices lack self-awareness of polarization and spatial orientation, then ease of operation is improved, but polarimetry sensing capability deteriorates
Solution Approach 1:
The patent implements a self-calibration mechanism where the system automatically determines its own polarization reference and spatial orientation through field domain processing. By analyzing the electromagnetic field components and performing self-calibration procedures, the device achieves polarimetry sensing capability without requiring manual configuration or external calibration equipment, thus maintaining ease of operation while enabling accurate sensing.
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
Enables polarimetry sensing in wireless communication devices without specialized hardware, allowing for accurate channel estimation and environment sensing by determining a reference polarization and processing electromagnetic waves with known polarizations.
Implementation Method 1
The controller is configured to control the polarizer device to change a polarization of the first electromagnetic wave impinged on the polarizer device to a first polarization, such that the first electromagnetic wave with the first polarization impinges on the second device
Data Source
AI summary
The present disclosure relates to a system for at least one of determining a reference polarization, performing channel estimation of an environment and sensing the environment. The system comprises a controller, one or more processors, a polarizer device, and a device. The device is configured to wirelessly emit a first electromagnetic wave such that the first electromagnetic wave impinges on the polarizer device and on a second device, and a second electromagnetic wave such that the second electromagnetic wave impinges on the polarizer device and on the second device. The present disclosure relates to a method for at least one of determining a reference polarization, performing channel estimation of an environment and sensing the environment.