Relay Control Station Gain Redistribution for Interference Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional satellite communication systems face challenges in effectively utilizing transmission power due to interference waves, which are relayed along with intended signals, leading to inefficient power utilization and degraded reception quality.
Innovation Solution
A relay control station that calculates and applies gain control values to demultiplexed signals based on measured and expected power values, redistributing surplus power to suppress interference waves and optimize signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If gain control is applied for each band of signal transmitted by the transmitter, then transmission power is controlled, but interference waves in narrower bands cannot be suppressed selectively
Solution Approach 1:
The patent segments the signal processing into demultiplexed signals, allowing individual gain control for each signal component. The gain control unit calculates and applies different gain control amounts to each demultiplexed signal based on its specific characteristics, enabling selective interference suppression at the signal level rather than requiring separate hardware for each frequency band.
Solution Approach 2:
The patent changes the gain parameter individually for each demultiplexed signal. The gain control unit determines specific gain control amounts based on measured power values and expected power values, then applies these parameter changes to suppress interference waves in specific signals while maintaining proper transmission levels for other signals.
2Loss of energy
If all demultiplexed signals are relayed with full power, then signal quality is maintained, but transmission power is wasted on interference waves
Solution Approach 1:
The patent implements a feedback mechanism where the gain control unit measures the actual power values of demultiplexed signals and compares them with expected power values. Based on this feedback, the system dynamically adjusts gain control amounts to suppress interference waves while maintaining proper signal levels, optimizing transmission power utilization.
Solution Approach 2:
The system dynamically changes the gain parameter for each demultiplexed signal based on real-time power measurements. By adjusting these parameters, the system reduces power consumption for interference-containing signals while maintaining adequate power for valid signals, thereby optimizing overall transmission power efficiency.
3Object-affected harmful factors
If gain is reduced for all signals to suppress interference, then interference is suppressed, but signal quality deteriorates
Solution Approach 1:
The patent segments the gain control application to individual demultiplexed signals rather than applying uniform gain reduction to all signals. This allows the system to suppress interference in specific signals while maintaining full gain for signals without interference, preserving overall signal quality.
Solution Approach 2:
The system applies differentiated parameter changes to each demultiplexed signal's gain based on its specific characteristics. By calculating individual gain control amounts, the system suppresses interference where necessary while maintaining signal quality for valid transmissions, avoiding blanket gain reduction.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
To obtain a relay control station and an interference suppressing method capable of effectively utilizing the transmission power of a repeater while improving the reception quality of a receiver. A relay control station includes a power control unit 433 that determines, on the basis of a power value of each of demultiplexed signals measured by the repeater and an expected power value of each of the demultiplexed signals, a gain control amount provisional value for each of the demodulated signals and calculates a gain control value of each of the demultiplexed signals for the repeater on the basis of a ratio between a sum of power estimation values of all the demultiplexed signals obtained when the gain control amount provisional value is applied and a sum of power values of all the demultiplexed signals measured by the repeater and the gain control amount provisional value; and a repeater interface unit 410 that notifies the repeater of the gain control amount calculated by the power control unit 433.