UWB Signal Processing for Combined Ranging and Radar Sensing
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Solution Overview
Problem
UWB signals can only be used for either communication or radar purposes at a time, limiting the ability to simultaneously measure distance and use radar functions, which hampers efficient utilization of these signals in electronic devices.
Innovation Solution
An electronic device equipped with an antenna module and a communication module, along with a processor that transmits UWB signals, receives reflected frames, and acquires channel impulse responses to use the same signal for both distance measurement and radar functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB signals are used for communication to measure distance to an external electronic device, then distance measurement accuracy is improved, but the time available for radar signal processing is reduced
Solution Approach 1:
The patent applies multi-functionality by enabling the UWB signal to serve dual purposes: both communication (distance measurement) and radar detection. The system processes the same received signal to extract both ranging information and radar channel impulse response, allowing one signal to fulfill multiple functional roles simultaneously.
Solution Approach 2:
The patent merges the communication signal reception and radar signal processing by using the same received UWB signal for both purposes. The channel impulse response obtained from communication signaling is reused for radar detection, combining what were previously separate signal processing paths into a unified approach.
2Adaptability or versatility
If UWB signals are used exclusively for radar functions, then radar detection capabilities are improved, but distance measurement capability is lost
Solution Approach 1:
The system achieves multi-functionality by designing the signal processing architecture to extract both radar channel impulse response and distance measurement information from the same UWB signal reception, enabling the device to maintain both radar detection and distance measurement capabilities simultaneously.
Solution Approach 2:
The patent changes the processing parameters of the received signal to serve different functions. By adjusting how the channel impulse response is utilized—either for radar detection or for distance calculation—the system can adapt the same signal to meet different measurement needs without requiring separate signal transmissions.
3Loss of time
If separate signals are used for communication and radar functions, then signal processing time is increased, but device complexity is reduced
Solution Approach 1:
The patent combines multiple signal processing tasks into a unified process. The received UWB signal is processed once to obtain the channel impulse response, which is then reused for both distance measurement and radar detection, eliminating the need for separate signal transmissions and reducing overall processing time.
Solution Approach 2:
The system makes the received communication signal serve dual purposes by extracting both ranging and radar information from it. The same signal that carries communication data also provides radar detection information, allowing the signal to essentially serve itself for multiple functions without requiring additional dedicated radar signals.
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 the electronic device to use UWB signals for both distance measurement and radar functions simultaneously, enhancing its operational capabilities and efficiency.
Implementation Method 1
receive, based on the transmitted first data frame, a reflected first data frame
Data Source
AI summary
An electronic device is provided. The electronic device includes an antenna module, a communication module configured to control the antenna module, and at least one processor operatively connected to the communication module, wherein the at least one processor transmits a ultra-wide band (UWB) signal including a first data frame, receives, based on the transmitted first data frame, a reflected first data frame, obtains a first channel impulse response by using the reflected first data frame, acquires information by using the channel impulse response, and receives a UWB signal including a second data frame from an external electronic device in response to the transmitted first data frame.