Modulation Control Apparatus for Temperature-Adaptive Signal Point Arrangement
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Solution Overview
Problem
Existing communication systems face challenges in maintaining signal quality due to temperature-induced changes in the non-linear characteristics of amplifiers, leading to bit errors and phenomena like gain compression and memory effects.
Innovation Solution
A modulation control apparatus and method that acquires temperature data over a predetermined period and dynamically adjusts signal point arrangements for transmission signals based on this data, switching between different signal point arrangements to mitigate the effects of temperature changes and non-linear amplifier characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If digital modulation is executed to transmit signals, then communication capability is improved, but temperature changes cause non-linear amplifier characteristics leading to bit errors
Solution Approach 1:
The patent applies dynamics by making the signal point arrangement adjustable rather than fixed. The modulation control apparatus dynamically switches between multiple signal point arrangements (e.g., 16-QAM, 64-QAM, 256-QAM) based on real-time temperature measurements, allowing the system to adapt to changing amplifier characteristics and maintain reliable communication under varying thermal conditions
Solution Approach 2:
The patent changes the modulation parameter (signal point arrangement) in response to temperature variations. By detecting temperature changes and switching between different signal point arrangements, the system modifies the modulation characteristics to compensate for amplifier non-linearity, thereby maintaining communication reliability while preserving high productivity
2Length of stationary object
If amplifier gain is increased to improve signal strength, then transmission distance is extended, but gain compression and memory effects occur due to temperature-induced non-linearity
Solution Approach 1:
The patent converts the harmful effect of temperature-induced non-linearity into a beneficial adaptive control mechanism. By detecting temperature changes and switching signal point arrangements accordingly, the system uses temperature information to predict and compensate for amplifier non-linearity, transforming the harmful thermal effect into a useful control parameter that prevents gain compression and memory effects
Data Source
AI summary
In one aspect of the present example embodiment, a modulation control apparatus includes at least one memory configured to store an instruction, and at least one processor configured to execute the instruction, wherein the processor, by executing the instruction, acquires data relating to a temperature during a predetermined period, and sets signal point arrangement used for modulation of a transmission signal in such a way that the signal point arrangement used for modulation of the transmission signal is switched to different signal point arrangement during the predetermined period, based on the data relating to the temperature.