Optical Wireless Receiver Signal Splitting for Adaptive Detection
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Solution Overview
Problem
The increasing demand for high data throughput and diverse communication services in wireless communication systems, particularly in 5G networks, necessitates a method to efficiently utilize limited radio resources for transmitting and receiving data and control information, especially in scenarios with high-density nodes and UEs, while addressing latency and reliability challenges.
Innovation Solution
A receiver for optical wireless communication systems is designed with a reception aperture, a coupler to split optical signals, a sensor to determine a control voltage, and a detector to output an electrical signal based on the control voltage, incorporating a photodiode, noise filter, and load resistor to optimize signal transition functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of UEs and data volume increase to meet high data throughput demand, then communication capacity increases, but radio resources become insufficient and efficiency decreases
Solution Approach 1:
The patent segments the optical signal into multiple components using optical couplers, separating desired signals from sensing signals. This segmentation allows parallel processing of different signal types, increasing overall system throughput without requiring additional radio resources.
Solution Approach 2:
The patent transitions from traditional radio frequency communication to optical wireless communication, moving to a different frequency dimension (optical spectrum). This dimensional change provides vastly more available bandwidth and resources, resolving the radio resource insufficiency while maintaining high data throughput capability.
2Difficulty of detecting and measuring
If signal splitting is performed to separate desired signal and sensing signal, then signal processing capability improves, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated optical components. The optical coupler simultaneously performs signal splitting and routing, while the detector integrates photodetection and electrical signal generation. This merging reduces the number of discrete components and simplifies the overall receiver structure despite the sophisticated signal processing capabilities.
Solution Approach 2:
The optical detector serves multiple functions: it detects the desired optical signal, converts it to electrical signals, and works in conjunction with the sensing signal path. This multi-functionality reduces the need for separate dedicated components for each function, thereby reducing device complexity while maintaining high signal processing capability.
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 enhances the efficient transmission and reception of wireless communication signals, increases overall throughput, supports various services with different requirements, and reduces latency in radio communication.
Implementation Method 1
a detector configured to output an electrical signal having an output voltage V based on the desired signal and the control voltage Vo
Data Source
AI summary
A receiver used in an optical wireless communication system is provided. The receiver comprises: a receiving aperture for receiving an optical signal; a coupler for separating the optical signal received by means of the receiving aperture into a main signal and a sensing signal; a sensor for determining a control voltage Vo on the basis of the sensing signal; and a detector for outputting an electric signal which is an output voltage V on the basis of the main signal and control voltage Vo. The detector is formed such that the transfer function of the detector changes on the basis of the control voltage Vo.