Energy Harvesting Relay Node Loop Interference Resistance
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Solution Overview
Problem
In relaying communication systems, loop interference (LI) limits performance by reducing the power of signals transmitted to destinations, necessitating enhanced resistance mechanisms.
Innovation Solution
A communication method and system that utilize an energy harvesting-enabled relay node to split signals based on a power split ratio and noise level, optimizing the distribution of power between the signal and noise to enhance loop interference resistance, employing a power split device, energy harvesting device, and information decoding device to generate and relay signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If loop interference resistance is improved, then signal transmission power to destination is increased, but system complexity increases due to power split device and statistics determination
Solution Approach 1:
The relay node functionality is segmented into distinct modules: a power split device that divides the received signal into multiple paths, an energy harvesting device that captures energy from one path, and an information decoding device that processes the signal. This segmentation allows each component to be optimized independently for its specific function while contributing to overall loop interference resistance.
Solution Approach 2:
The relay node is designed to perform multiple functions simultaneously: it relays information signals from source to destination, harvests energy from the received signal, and determines signal statistics for optimization. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing system complexity while improving reliability.
2Reliability
If power is allocated to energy harvesting, then loop interference resistance is improved, but power available for signal transmission is reduced
Solution Approach 1:
The system dynamically adjusts the power split ratio parameter to optimize performance. By determining signal statistics (such as signal-to-noise ratio) and using them to control the power distribution, the system adapts to changing channel conditions. This allows the relay node to allocate appropriate power to energy harvesting while maintaining sufficient power for signal transmission, resolving the trade-off between these two competing requirements.
Solution Approach 2:
The relay node determines the statistics of received signals and uses this information to adjust the power split ratio. This feedback mechanism ensures that power allocation decisions are based on actual channel conditions, allowing the system to optimize loop interference resistance while maintaining adequate transmission power by adapting to real-time signal characteristics.
Data Source
AI summary
The application discloses a method applied in a system. The method includes the following operations: determining a first statistics of a first signal and a second statistics of a second signal according to a power split ratio and a noise level of a relay node; relaying, by the relay node, the first signal according to the power split ratio, the first statistics and the second statistics to generate the second signal; and receiving, by a destination node, the second signal.