Signal Processing Device Bi-directional Feedback for RF Loss Compensation
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Solution Overview
Problem
In cellular vehicle-to-everything (C-V2X) communication, the long distance between antenna and communication modules in mobile devices leads to significant radio frequency signal loss, affecting communication distance and quality, and existing solutions fail to effectively compensate for this loss.
Innovation Solution
A signal processing device employing bi-directional linear close-loop control to adjust and compensate radio frequency signal transmission loss by generating a control signal based on power detection and adjusting signal parameters, thereby enhancing signal linearity and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna and communication module are placed far apart in mobile devices, then the device design flexibility and size are improved, but the radio frequency signal loss increases significantly
Solution Approach 1:
The patent implements a feedback mechanism where the distal end device detects the actual signal power and sends feedback information to the proximal end device, which then adjusts the signal output accordingly to compensate for transmission loss through the long connection unit
Solution Approach 2:
The system dynamically changes signal parameters (power level, frequency) based on the detected transmission conditions and feedback information, allowing the proximal end device to adjust its output to maintain optimal signal quality despite the long transmission distance
2Ease of operation
If the radio frequency transmission line length is increased to connect distant antenna and communication module, then the device layout flexibility is improved, but the signal attenuation increases causing poor communication quality
Solution Approach 1:
The distal end device continuously monitors signal quality and transmits feedback information to the proximal end device, enabling real-time adjustment of transmission parameters to maintain communication reliability despite the long transmission line
Solution Approach 2:
The system transitions from a static transmission setup to a dynamic one where signal parameters are continuously adjusted based on real-time feedback, allowing the system to adapt to changing transmission conditions and maintain optimal performance
3Speed
If higher carrier frequency is used in C-V2X communication, then the communication speed and capacity are improved, but the line loss increases
Solution Approach 1:
The feedback mechanism allows the system to detect signal degradation caused by high-frequency transmission and automatically adjust parameters to compensate for the increased line loss, enabling the use of higher carrier frequencies while maintaining communication quality
Solution Approach 2:
The system dynamically adjusts transmission parameters including power level and frequency based on feedback information, allowing optimization of the carrier frequency and power settings to achieve the best balance between communication speed and line loss compensation
Data Source
AI summary
A signal processing device is provided. The signal processing device includes a proximal end device, a connection unit, and a distal end device. The proximal end device generates a first radio frequency signal. The connection unit is coupled to the proximal end device and receives and transmits the first radio frequency signal. The distal end device is coupled to the connection unit, receives the first radio frequency signal, performs a power detection on the first radio frequency signal to generate a detection signal, generates a control signal according to a comparison result of the detection signal and a predetermined reference value, and transmits the control signal to the connection unit. The proximal end device further receives the control signal through the connection unit, and adjusts the first radio frequency signal according to the control signal so as to generate a second radio frequency signal.