研究目的
Investigating the bit error rate (BER) performance of an optical-wireless CSK/asynchronous CDMA system using dual modified pseudo orthogonal M-sequence sets (DMPOMs) in 2-user communication.
研究成果
The CSK system using DMPOMs is a valid method for IM/DD optical-wireless systems, with BER performance improving by utilizing inner-codes generated by different feedback taps. This approach is effective for realizing CSK/CDMA in optical-wireless communications.
研究不足
The study is limited to 2-user communication scenarios and specific configurations of DMPOMs. The analysis does not cover scenarios with more users or different code configurations.
1：Experimental Design and Method Selection:
The study involves the design of a CSK system using DMPOMs for optical-wireless communication, focusing on BER performance in asynchronous CDMA scenarios.
2：Sample Selection and Data Sources:
The analysis is based on computer simulations considering thermal noise, background-noise, scintillation, avalanche photo-diode (APD) noise, and signal dependence noise.
3：List of Experimental Equipment and Materials:
The simulation parameters include chip interval, laser wavelength, background noise, scintillation logarithm variance, quantum efficiency, APD gain, bulk leakage current, surface leakage current, modulation extinction ratio, APD effective ionization ratio, receiver noise temperature, and receiver load resistor.
4：Experimental Procedures and Operational Workflow:
The study evaluates BER performance under varying conditions such as time difference between users and average transmitted laser power per bit.
5：Data Analysis Methods:
The performance is analyzed through computer simulations, comparing BER under different conditions and configurations.
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