ID 原文 译文
51527 针对该问题，Wilkinson和Fenton近似被广泛应用于对数正态信道的性能分析， Therefore, Wilkinson Approximation(WA) and Fenton Approximation(FA) are widely applied to approximate the performance of lognormal fading channels.
51528 但Wilkinson和Fenton近似的应用范围却缺乏标准，这导致了系统设计时对理论性能的错误预判。 However, their ranges of applications are not fully studied, which causes discrepancies in performance evaluations.
51529 为此，文章基于原点矩的积分表达式讨论了Wilkinson和Fenton近似的特点，提出了基于Wilkinson和Fenton近似来估计自由空间光通信中继性能的方法，对比了Wilkinson和Fenton近似在此类性能分析中的适用范围。 In this work, we compare WA and FA based on the expressions of moments, and propose an approach to approximate the performance of Free-Space Optical Communications(FSO) relaying systems over the lognormal weak turbulence channels, and discuss the ranges of applications for WA and FA.
51530 仿真结果表明，在中低信噪比情况下，Wilkinson比Fenton近似更准确; It is shown that at low and medium Signal-to-Noise Ratio(SNR), error probability approximation based on WA is more accurate.
51531 在高信噪比情况下，Fenton比Wilkinson近似更精确。 However, at large SNR, Fenton's approach will provide better approximation accuracy compared to the WA.
51532 此外，仿真结果还表明，Wilkinson近似方法的精度和对数正态信道的方差密切相关。 Simulation results indicate that the approximation error depends on the discrepancies between the variances over FSO links as well as the scintillation level of the channels.
51533 以巡检机器人为代表的终端设备在变电站中应用广泛，第五代移动通信(5G)技术发展迅速， Terminal equipment represented by inspection robots is widely used in substations.
51534 未来5G可移动终端在变电站的应用将会越来越多。 In the future, 5 th-Generation(5 G) mobile terminals will be more and more used in substations with the fast development of 5 G technology.
51535 通信系统的性能与无线信道息息相关， The performance of the communication system is closely related to the wireless channel.
51536 因此研究变电站中可移动终端的5G通信信道特性至关重要。 Therefore, it is very important to study the 5 G communication channel characteristics of the mobile terminal in the substation.