研究目的
To develop a shot noised limited photon counting underwater interleaver iterative NOMA wireless optical communication system and to employ the equal gain combining (EGC) receiving diversity technology to combat underwater channel turbulence fading.
研究成果
The proposed optical NOMA UWOC system with LED-based transmitter and photon counting receiver enhances performance and reduces the power needed for successful transmission. It shows rapid convergence and good receiving diversity property, making it suitable for underwater Internet of things.
研究不足
The study is limited by the simulation environment and the specific conditions set for the underwater channel, such as the attenuation coefficient and the turbulence intensity. Future work includes testing under different conditions and environments.
1：Experimental Design and Method Selection:
The study proposes an optical NOMA underwater communication scheme based on photon counting, simulated by MATLAB. It includes optical signal generation, optical NOMA modulation transmitter, underwater channel simulation, photon counting receiver, signal demodulation, and output.
2：Sample Selection and Data Sources:
The simulation is based on the principle of photon counting and the channel model is based on the underwater wireless communication channel characteristics.
3：List of Experimental Equipment and Materials:
The system includes LED-based transmitter, single photon counting machines (SPCM), and MATLAB for simulation.
4：Experimental Procedures and Operational Workflow:
The system's performance is evaluated through Monte-Carlo simulations on MATLAB, focusing on BER and convergence properties in a UWOC channel.
5：Data Analysis Methods:
The performance is analyzed based on the bit error rate (BER) and the system's convergence properties.
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