论文标题
分析洛拉的可靠性
Analysis of the reliability of LoRa
论文作者
论文摘要
考虑到不完善的正交效应，该信在存在不同干扰的情况下研究了单个网关LORA系统的性能。它利用随机几何形状的概念提出了低复杂性近似闭合形式模型，以计算这些挑战性条件下的成功和覆盖概率。蒙特卡洛模拟结果表明，洛拉（Lora）并不像理论上描述为可以覆盖几至十公里的技术。已经发现，在传播因子（SF）之间的信噪比（SNR）和不完美的正交性的结合下，性能急剧降低了几公里。但是，当考虑完美的正交性并且不包括SNR时，可以观察到更好的性能。此外，性能是依赖性的，并且在部署单元格的边界处略有改进。最后，随着终端设备的平均数量的增长，覆盖范围的概率呈指数下降。
This letter studies the performance of a single gateway LoRa system in the presence of different interference considering the imperfect orthogonality effect. It utilizes concepts of stochastic geometry to present a low-complexity approximate closed-form model for computing the success and coverage probabilities under these challenging conditions. Monte Carlo simulation results have shown that LoRa is not as theoretically described as a technology that can cover few to ten kilometers. It was found that in the presence of the combination of signal-to-noise ratio (SNR) and imperfect orthogonality between spreading factors (SF), the performance degrades dramatically beyond a couple of kilometers. However, better performance is observed when perfect orthogonality is considered and SNR is not included. Furthermore, the performance is annulus dependent and slightly improves at the border of the deployment cell annuli. Finally, the coverage probability declines exponentially as the average number of end devices grows.
