Transmission Channel Deviation Correction via Vector Detection
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Solution Overview
Problem
Current methods for correcting deviations between transmission channels in phased arrays used in 5G communications systems have low accuracy due to estimation errors in transmission line delays, leading to significant errors in phase correction values.
Innovation Solution
An apparatus and method that utilize a vector detection unit and processing unit to detect signal vectors in both directions on a correction coupling channel, determining deviation correction values by offsetting transmission deviation values, thereby improving correction accuracy between transmission channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmission delay estimation is used to correct channel deviation, then correction can be performed, but accuracy is low due to transmission line deviation
Solution Approach 1:
The patent introduces a correction coupling channel as an intermediary component to establish a direct feedback path between transmission channels. This intermediary structure enables accurate measurement of transmission line deviations by providing a reference path, thereby resolving the accuracy problem without requiring complex estimation algorithms
Solution Approach 2:
The patent implements a feedback mechanism where the output of each transmission channel is fed back through the correction coupling channel to the input. This feedback loop enables continuous measurement and correction of phase deviations, improving measurement precision by using actual measured values rather than estimated values
2Manufacturing precision
If phase correction is performed using estimated values, then correction can be applied, but error propagation occurs leading to large errors in correction values
Solution Approach 1:
The feedback mechanism measures actual phase deviations through the correction coupling channel and uses these measured values directly for correction, eliminating error propagation that occurs with iterative estimation methods. Each correction cycle uses fresh measurements rather than accumulating estimation errors
Solution Approach 2:
The patent replaces the software-based estimation algorithm with a hardware-based direct measurement system using the correction coupling channel. This substitution of measurement mechanism eliminates computational errors and provides more accurate phase deviation values
Data Source
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AI summary
This application provides an apparatus and a method for correcting a deviation between a plurality of transmission channels, and relates to the field of communications technologies, to improve correction accuracy of transmission channels. A plurality of transmission channels include a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. The apparatus includes a vector detection unit, configured to: when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel; and a processing unit, configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors, where the deviation correction value is used to correct a deviation between the first transmission channel and the second transmission channel.