论文标题
洛拉系统在多路和干扰渠道中的理论性能
Theoretical Performance of LoRa System in Multi-Path and Interference Channels
论文作者
论文摘要
This paper presents a semi-analytical approximation of Symbol Error Rate (SER) for the well known LoRa Internet of Things (IoT) modulation scheme in the following two scenarios: 1) in multi-path frequency selective fading channel with Additive White Gaussian Noise (AW GN) and 2) in the presence of a second interfering LoRa user in flat-fading AW GN channel.连贯性和非连贯性情况的性能是通过在接收到的Lora波形上考虑基于常见的离散傅立叶变换（DF T）检测器来得出的。通过考虑这两种情况，检测器表现出寄生峰，从而严重降低了洛拉接收器的性能。我们在这个意义上提出了这个结果的理论表达，基于峰值检测概率的统一框架使我们能够得出SER，该框架通过蒙特卡洛模拟验证。快速计算衍生的封闭形式SER允许对这两种情况进行深入的性能分析。
This paper presents a semi-analytical approximation of Symbol Error Rate (SER) for the well known LoRa Internet of Things (IoT) modulation scheme in the following two scenarios: 1) in multi-path frequency selective fading channel with Additive White Gaussian Noise (AW GN) and 2) in the presence of a second interfering LoRa user in flat-fading AW GN channel. Performances for both coherent and non-coherent cases are derived by considering the common Discrete Fourier transform (DF T) based detector on the received LoRa waveform. By considering these two scenarios, the detector exhibits parasitic peaks that severely degrade the performance of the LoRa receiver. We propose in that sense a theoretical expression for this result, from which a unified framework based on peak detection probabilities allows us to derive SER, which is validated by Monte Carlo simulations. Fast computation of the derived closedform SER allows to carry out deep performance analysis for these two scenarios.
