Work

DCSS-LoRa: Pushing the Transmission Rate Limits in LoRa by Enhancing the Preamble with Dual Chirp

Year: 2024

Type: conference-paper

Abstract: Due to its long-range and low-power characteristics, LoRa has become a key enabler for numerous AIoT applications, ranging from smart cities to industrial automation. However, current LoRa networks face significant challenges in real-world deployments. Specifically, the slow transmission rate and low spectrum utilization stem from LoRa's limited data rate and transmission efficiency. In this paper, we propose a novel demodulation method, D-CSS, which cleverly leverages frequency differences within the LoRa preamble to modulate data, forming a Dual Chirp structure. Through practical deployment trials using USRP devices, we demonstrate that the Dual Chirp structure effectively enhances the preamble, enabling LoRa to achieve a throughput of 200 symbols/S while maintaining a SER < 5%, even under extremely low SNR conditions (< -5 dB).

DOI: 10.1145/3718391.3718423

Authors: Jiamin Jiang, Hao Wang, Guangquan Lai, Xiaotong Chen, Jian Zhang, Lu Wang

Institutions: Shenzhen University, Wuhan University

Language: English

Topic: IoT Networks and Protocols

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Funders: National Science Foundation, National Natural Science Foundation of China, Department of Education of Guangdong Province