研究目的
Investigating the performance of a hybrid free-space optical (FSO)/radio frequency (RF) communication system under the selection combining (SC) diversity scheme, considering fading effects and pointing errors.
研究成果
The hybrid FSO/RF system with SC diversity scheme shows superior performance in terms of reliability and BER compared to either FSO-only or RF-only links and the hybrid system without SC. The system's performance is significantly affected by pointing errors and turbulence intensity. BPSK modulation is found to be more resistant to turbulence than QPSK or DPSK.
研究不足
The study does not consider the impact of all possible atmospheric conditions and assumes ideal conditions for some parameters. The practical implementation complexity and the accuracy of channel state information (CSI) are also potential limitations.
1：Experimental Design and Method Selection:
The study adopts the Nakagami-m model for the RF link and the gamma–gamma model for the FSO link to describe multipath and turbulence effects, respectively. It also considers pointing errors in the FSO link.
2：Sample Selection and Data Sources:
The analysis is based on theoretical models and simulations, with parameters typical for FSO and RF communication systems.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned in the abstract.
4：Experimental Procedures and Operational Workflow:
The study derives closed-form expressions for outage probability and BER, and conducts numerical simulations to compare the performance of the hybrid system with SC against FSO-only and RF-only links.
5：Data Analysis Methods:
The analysis uses Meijer-G and extended generalized bivariate Meijer G-function (EGBMGF) for deriving closed-form expressions and numerical simulations for performance evaluation.
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