Distortion Compensation Amplifier for Carrier Leak and Image Correction
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Solution Overview
Problem
Existing distortion compensation amplification devices rely on test signals to calculate correction values, which can lead to suboptimal removal of carrier leaks and images in wireless transmission, and require time-consuming offset correction processes.
Innovation Solution
A distortion compensation amplification device that calculates correction values based on actual transmitted signals, using a correction unit, modulation unit, and test signal output unit to optimize carrier leak and image removal, allowing for rapid initiation of radio signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If correction values are calculated using test signals, then the correction process can be completed quickly, but the carrier leak and image removal effectiveness deteriorates
Solution Approach 1:
The system performs preliminary correction value calculation using test signals during the initialization phase, then transitions to using actual transmission signals for ongoing correction. This preliminary action ensures quick initial setup while maintaining optimal correction effectiveness during operation.
Solution Approach 2:
The system dynamically switches between using test signals and actual transmission signals for correction value calculation based on operational conditions. During normal transmission, actual signals are used; during initialization or when transmission is suspended, test signals are used, creating a flexible adaptive correction mechanism.
2Measurement precision
If correction values are calculated using actual transmitted signals, then the carrier leak and image removal effectiveness improves, but the time required to initiate transmission increases
Solution Approach 1:
The system performs preliminary correction value calculation using test signals during the initialization phase, before actual transmission begins. This preliminary correction reduces the time required to initiate transmission while ensuring that actual signal-based correction is already in place for optimal carrier leak and image removal effectiveness.
Solution Approach 2:
The correction process operates continuously throughout system operation, transitioning from test signal-based correction during initialization to actual transmission signal-based correction during normal operation. This continuous correction ensures optimal performance is maintained without interruption to transmission.
3Measurement precision
If the amplifier power is turned off for offset correction, then the correction can be performed accurately, but the transmission process is interrupted
Solution Approach 1:
The system uses feedback from actual transmission signals to continuously monitor and adjust correction values without interrupting transmission. The correction unit receives feedback about carrier leak and image levels during normal operation and dynamically adjusts correction parameters, eliminating the need to turn off the amplifier for correction.
Solution Approach 2:
Offset correction is performed preliminarily using test signals before normal transmission begins, establishing accurate correction values in advance. This preliminary correction is then refined during operation using actual transmission signal feedback, maintaining both accuracy and transmission continuity.
Data Source
AI summary
A distortion compensation amplification device which supplies a transmission signal while a distortion of the amplified transmission signal is compensated, the distortion compensation amplification device including a correction unit which corrects a carrier leak and an image of the transmission signal based on a correction value. The distortion compensation amplification device includes a modulation unit which modulates the transmission signal supplied from the correction unit. The distortion compensation amplification device includes a correction value calculating unit which calculates the correction value based on the transmission signal supplied from the modulation unit. The distortion compensation amplification device includes a test signal output unit which supplies a test signal to the correction unit in order to calculate the correction value of the correction value calculating unit when the transmission signal is not transmitted.