Variable Attenuator Gain Table for Fast Communication Calibration
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Solution Overview
Problem
Modern communication systems require accurate real-time gain reporting to achieve optimal performance, particularly in power adjustment and bit error rate (BER), but existing methods are inefficient due to the time-consuming nature of gain measurements across various temperatures and frequencies.
Innovation Solution
A method involving a variable attenuator and gain variable devices that measure initial attenuation accuracy, perform interpolation to obtain secondary gains at different temperatures and frequencies, and build a three-dimensional gain table to enable precise configuration of the communication system, using nonlinear functions like spline and circular functions for interpolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gain measurements are performed across various temperatures and frequencies to achieve accurate real-time gain reporting, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent performs gain measurements at selected temperature and frequency nodes in advance, stores these measurements in a gain table, and uses interpolation to determine gain values at intermediate nodes. This preliminary action eliminates the need for time-consuming measurements during actual operation, achieving both high precision and fast response.
Solution Approach 2:
The patent creates a gain table that copies and stores pre-measured gain values at discrete temperature and frequency nodes. During operation, the system copies relevant data from this table and uses interpolation algorithms to generate accurate gain values without performing actual measurements, thus saving time while maintaining precision.
2Adaptability or versatility
If a comprehensive gain table covering multiple temperatures and frequencies is built, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the continuous temperature and frequency ranges into discrete nodes, creating a structured gain table with specific measurement points. This segmentation allows comprehensive coverage of operating conditions while keeping the data structure manageable and the interpolation process computationally efficient.
Data Source
AI summary
The present disclosure provides a method for configuring a communication system with a variable attenuator. The method includes measuring a first attenuation accuracy of the communication system at a first attenuation rate of the variable attenuator, and setting the variable attenuator based on the first attenuation accuracy so that the variable attenuator has a second attenuation rate and the communication system has a second attenuation accuracy. The method further includes obtaining a plurality of first gains at first temperatures and first frequencies, and performing an interpolation process to obtain, from the plurality of first gains, a plurality of second gains at second temperatures and/or second frequencies. The method also includes building a three-dimensional gain table with respect to the temperature, the frequency and the attenuation rate.