Multi-Band Polarization Rotation for Wireless Interference Mitigation
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Solution Overview
Problem
Interference from unexpected sources negatively impacts wireless communication systems, leading to reduced performance, throughput, and bandwidth issues, and existing solutions like adding communication nodes or antenna steering are inadequate.
Innovation Solution
Implementing a radio frequency polarization shifting module (RPM) that adjusts orthogonal signals in the RF domain, using mechanical and electronic methods to rotate polarizations and mitigate interference without affecting orthogonality, thereby enabling selective signal extraction and interference avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polarization rotation is applied to mitigate interference in one frequency band, then interference mitigation is improved, but maintaining consistent polarization rotation across multiple frequency bands becomes complex
Solution Approach 1:
The polarization rotation device is designed to operate across multiple frequency bands simultaneously using a universal polarization rotation mechanism. The device applies the same polarization rotation angle to signals across different frequency bands, allowing a single device structure to handle multiple bands without requiring separate rotation mechanisms for each band, thereby reducing overall system complexity while maintaining interference mitigation effectiveness.
Solution Approach 2:
The system dynamically adjusts the polarization rotation angle based on interference characteristics detected in the communication signals. By changing the rotation angle parameter, the device can adapt to different interference scenarios across multiple frequency bands, optimizing interference mitigation while maintaining a relatively simple fixed-structure design that doesn't require complex reconfiguration for each band.
2Adaptability or versatility
If additional communication nodes are added to address interference, then system coverage is improved, but device complexity and cost increase
Solution Approach 1:
The polarization rotation device acts as an intermediary component inserted into the existing communication system between the antenna and the radio frequency processing units. Rather than adding new communication nodes or base stations, this intermediary device modifies the polarization state of existing signals to mitigate interference, achieving interference mitigation capability while maintaining the original system architecture and avoiding increased system complexity.
Solution Approach 2:
The invention replaces physical system expansion (adding more communication nodes) with a signal processing approach (polarization rotation). Instead of mechanically or physically expanding the network infrastructure, the system uses electromagnetic field manipulation through polarization rotation to achieve the same interference mitigation goal, thereby avoiding the complexity and cost associated with deploying additional network nodes.
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
Enhances signal-to-interference-plus-noise ratio (SINR) by minimizing interference, improving communication channel performance, and reducing the need for additional system implementation requirements.
Implementation Method 1
a polarization shifter operable to rotate a polarization of the orthogonal signals in a radio frequency (RF) domain
Data Source
AI summary
Aspects of the subject disclosure may include, for example, obtaining data regarding interference originating from one or more interference sources, and electronically rotating polarizations of signals relating to crossed-dipole radiating elements of an antenna system, the antenna system operating in multiple frequency bands, the electronically rotating being performed for a select number of frequency bands of the multiple frequency bands and facilitating mitigation of the interference. Other embodiments are disclosed.