## 3 Results and Discussion
tion model, the maximum power allocated by the embedded power allocation system is 4.98 mW, while the minimum value is 0.008 mW. Figure 18 illustrates the power allocation diagram of the embedded system for various data rates and SNR values across different OFDM modulation schemes. The experimental system's accuracy in the wireless optical communication channel, using the Gamma-Gamma model, is above 99%. Table 8 presents the accuracy of the embedded power allocation system, as well as the minimum and maximum allocated power. The bit error rate significantly increases in wireless optical communication channels experiencing strong Rayleigh fading. Conversely, the data rate declines significantly. In the embedded power allocation system, the maximum power is 5.02 mW, while the minimum power is 0.008 mW, calculated based on the channel data rate and SNR values. The embedded power allocation system for a channel with strong Rayleigh fading has an accuracy of 97%. Figure 19 illustrates the optimal power allocation for a wireless optical communication channel affected by strong Rayleigh fading, considering the data rate and SNR across different OFDM modulation schemes. The experimental system's accuracy is above 99% for higher modulation orders in the wireless optical communication channel with strong Rayleigh fading. Table 9 presents the accuracy of the embedded system, as well as the maximum and minimum power allocation values, for the channel with strong Rayleigh fading. \begin{table}
\begin{tabular}{c c c c} \hline
**Modulation Scheme** & **Min Power (mW)** & **Max Power (mW)** & **Accuracy \%** \\ \hline BPSK & 0.0099 & 4.96 & 99.85 \\ \hline QPSK & 0.0085 & 4.96 & 99.52 \\ \hline
16 QAM & 0.0102 & 4.98 & 99.69 \\ \hline
64 QAM & 0.0103 & 4.72 & 99.83 \\ \hline \end{tabular}
\end{table} 
Table 8: Minimum and maximum values and accuracy of embedded power allocation system for OWC channel modeled with Gamma–Gamma distribution. Figure 18: The power allocation diagram of the embedded system for various data rates (Gbps) and SNR values across different OFDM modulation schemes in the Gamma–Gamma channel model. The embedded power allocation system for wireless optical communication channels affected by Rician fading is approximately 98% accurate. Figure 20 illustrates the optimal power allocation for these channels, showcasing the data rate and SNR across different OFDM modulation schemes. The allocated power for various data rates and SNR values is a maximum of 4.98 mW and a minimum of 0.009 mW. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Modulation Scheme** & **Min Power (mW)** & **Max Power (mW)** & **Accuracy \%** \\ \hline BPSK & 0.0099 & 5.02 & 94.85 \\ \hline QPSK & 0.0082 & 4.96 & 94.49 \\ \hline
16 QAM & 0.0084 & 4.97 & 99.81 \\ \hline
64 QAM & 0.0099 & 4.96 & 99.22 \\ \hline \hline \end{tabular}
\end{table} 
Table 9: Minimum and maximum values and accuracy of embedded power allocation system for OWC channel affected by strong Rayleigh fading. Figure 20: The optimal power allocation for a wireless optical communication channel affected by strong Rician fading, considering the data rate (Gbps) and SNR across different OFDM modulation schemes. Figure 19: The optimal power allocation for a wireless optical communication channel affected by strong Rayleigh fading, considering the data rate (Gbps) and SNR across different OFDM modulation schemes. Table 10 presents the accuracy values of the embedded power allocation system for a wireless communication channel experiencing strong Rician fading. In this scenario, the experimental system achieves an accuracy of over 98%. According to the data in Table 10, both the maximum and minimum power allocation values are very close to the analytical values.