Signal Separation for Radar and Wireless Coexistence
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Solution Overview
Problem
The increasing demand for wireless communications has led to spectrum congestion, causing interference between radar and wireless communication devices, which hinders their performance, and existing solutions like Dynamic Spectrum Access are complex and costly to implement.
Innovation Solution
A method and system that use a processor to separate overlapping signals from radar and wireless communication devices operating on shared spectra by minimizing a cost function associated with the received mixture signal, allowing simultaneous operation while minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If radar and wireless communication devices operate on shared spectra simultaneously, then spectrum utilization efficiency is improved, but signal interference increases causing performance degradation
Solution Approach 1:
The patent segments the overlapping signal mixture into distinct radar and wireless communication signals through signal separation techniques. The receiver divides the composite received signal into separate components using processing algorithms that identify and extract individual signals based on their unique characteristics, thereby resolving the interference while maintaining shared spectrum operation.
Solution Approach 2:
The patent introduces signal processing algorithms as an intermediary between the mixed signals and the final reception. These processing techniques act as a mediator that filters, separates, and reconstructs the individual signals from the overlapping mixture, enabling both radar and wireless communication devices to operate simultaneously without performance degradation.
2Adaptability or versatility
If Dynamic Spectrum Access is implemented to allow secondary devices to operate when primary devices are inactive, then spectrum sharing is enabled, but system complexity and implementation cost increase
Solution Approach 1:
The patent merges the operations of primary radar devices and secondary wireless communication devices into a shared spectrum environment. Instead of requiring separate frequency bands or time slots, the system combines both signal types in the same spectral resources and uses signal separation techniques to manage coexistence, thereby reducing the need for complex spectrum management infrastructure.
Solution Approach 2:
The patent enables the receiver to perform self-service signal separation by automatically identifying and extracting individual signals from the overlapping mixture using processing algorithms. This self-service capability eliminates the need for external coordination or complex centralized spectrum management systems, reducing overall system complexity while enabling spectrum sharing.
Data Source
AI summary
In one example embodiment, a device includes a memory configured to store computer-readable instructions therein and a processor. The processor is configured to execute the computer-readable instructions to receive a mixture signal, and determine a first signal and a second signal from the mixture signal, the first signal being a signal of a first technology and the second signal being a signal of a second technology, the first and second signals being overlappingly transmitted signals, at least one of the first signal and the second signal being used for processing of information associated with the at least one of the first signal and the second signal.