Approximate BER Performance of LoRa Modulation With Heavy Multipath Interference

被引：2
|
作者：
Liu, Jiaojiao [1 ]
Yan, Yuanmei [1 ]
Yu, Hua [1 ]
Ma, Biyun [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2023年 / 12卷 / 05期
关键词：
Symbols; Interference; Demodulation; Bit error rate; Multipath channels; Gaussian distribution; Receivers; LoRa; frequency shift chirp modulation; multipath channel (MPC); bit error rate (BER); IOT;
D O I：
10.1109/LWC.2023.3246132
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter proposes a method to approximate LoRa performance over heavy multipath channels. Firstly, the multipath time delay and LoRa signal duration are combined to analyze the path overlapping interference quantitatively. Then simple BER approximations in coherent and non-coherent detections are derived with Gaussian Q-function and algebraic formulas. With the heavy multipath channel model in 3GPP to mimic the realistic indoor industrial scenarios, the approximate expressions are verified by Monte Carlo simulations. Moreover, performance comparison results show that a high spreading factor leads to severe multipath overlap and may result in BER reduction.
引用
收藏
页码：853 / 857
页数：5
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