Frequency Comb Power Control for Uniform 4D Beamforming
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Solution Overview
Problem
In optical wireless communication systems, 4D beamforming without considering the power distribution of the frequency comb results in non-uniform beam shapes and interference issues due to increased sidelobes and peak gain loss, making beam tracking difficult.
Innovation Solution
A method and device for controlling the power of a frequency comb signal source using a power controller to apply intensity-based power amplification to each frequency component, optimizing beam formation and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If 4D beamforming is performed without considering the power distribution of the frequency comb, then the beamforming operation can be performed with simple control, but the beam shape becomes non-uniform and interference problems occur due to increased sidelobes and peak gain loss
Solution Approach 1:
The patent applies different power amplification intensities to different frequency components of the frequency comb. Specifically, frequency components corresponding to antenna elements in the target cell area are amplified with higher intensity, while other frequency components receive lower amplification. This local differentiation of power distribution creates a uniform beam shape in the target area while suppressing sidelobes, resolving the contradiction between simple control and precise beam shaping.
2Ease of operation
If 4D beamforming is performed without considering the power distribution of the frequency comb, then the beamforming operation can be performed with simple control, but peak gain loss occurs in the main beam
Solution Approach 1:
The patent dynamically adjusts the power amplification parameter for each frequency component based on its correspondence to antenna elements in the target cell area. By changing the amplification intensity parameter selectively - higher for target-area frequencies and lower for others - the system maximizes peak gain in the main beam while maintaining simple beamforming control operations.
3Device complexity
If uniform power amplification is applied to all frequency components, then the amplification process is simple, but interference magnitudes increase in areas other than the target cell area
Solution Approach 1:
The patent implements spatially-selective power amplification where frequency components mapped to antenna elements serving the target cell area receive high amplification, while frequency components corresponding to other areas receive low amplification. This local quality differentiation effectively suppresses interference in non-target areas while maintaining simple amplification process control through systematic frequency-to-spatial mapping.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures uniform beam shape and optimal peak gain in the target cell area while minimizing interference in other areas, enhancing beamforming performance.
Implementation Method 1
power amplification is applied based on an intensity for each of a plurality of frequency components
Data Source
AI summary
The present specification provides a method, performed by an apparatus, for transmitting at least one beam in a wireless communication system, the method comprising transmitting the at least one beam to another apparatus and receiving information about a result of measuring the at least one beam from the other apparatus, wherein the at least one beam is a beam generated on the basis of a signal synthesized from a laser signal being incident on a meta surface from a power controller, the laser signal consists of a plurality of frequency components, the synthesized signal is a signal in which power amplification is applied to each of the plurality of frequency components, and the power amplification is applied on the basis of the intensity regarding each of the plurality of frequency components.