MM-LoRa-Mod: A non-coherent LoRa modulation scheme for underwater acoustic communications

YU Xiao; XU Weikai; SUN Haixin; LIU Qi

doi:10.11959/j.issn.1000-0801.2024194

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MM-LoRa-Mod: A non-coherent LoRa modulation scheme for underwater acoustic communications

Research and Development | 更新时间：2024-11-25

- MM-LoRa-Mod: A non-coherent LoRa modulation scheme for underwater acoustic communications
- Telecommunications Science Vol. 40, Issue 9, Pages: 13-27(2024)
- 作者机构：
  
  1.厦门大学信息与通信工程系，福建厦门 361005
  2.中国舰船研究院，北京 100192
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(62271426;61871337)
- DOI：10.11959/j.issn.1000-0801.2024194
  CLC： TN911
- Received：16 April 2024，
  
  Revised：2024-07-04，
  
  Published：20 September 2024
- 稿件说明：
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余骁,徐位凯,孙海信等.MM-LoRa-Mod：一种应用于水声通信的非相干LoRa调制方案[J].电信科学,2024,40(09):13-27.

YU Xiao,XU Weikai,SUN Haixin,et al.MM-LoRa-Mod: A non-coherent LoRa modulation scheme for underwater acoustic communications[J].Telecommunications Science,2024,40(09):13-27.
余骁,徐位凯,孙海信等.MM-LoRa-Mod：一种应用于水声通信的非相干LoRa调制方案[J].电信科学,2024,40(09):13-27. DOI： 10.11959/j.issn.1000-0801.2024194.

YU Xiao,XU Weikai,SUN Haixin,et al.MM-LoRa-Mod: A non-coherent LoRa modulation scheme for underwater acoustic communications[J].Telecommunications Science,2024,40(09):13-27. DOI： 10.11959/j.issn.1000-0801.2024194.

摘要

LoRa（long-range）是一种新兴的低功耗广域网技术。面对频率选择性衰落多径信道等挑战，现有LoRa方案存在数据速率低、系统复杂度高等问题。针对以上问题，提出一种基于多模的LoRa（MM-LoRa-Mod）调制方案，该方案通过多路复用线性调频信号的频移来传输信息，显著提高了数据速率。此外，针对复杂水声通信场景，提出一种低复杂度的MM-LoRa-Mod非相干检测算法。通过评估MM-LoRa-Mod在多径信道、Watermark仿真平台以及浅海水声信道下的误码率性能，所提方案展现了优异的抗多径衰落和抗多普勒频移性能，表明MM-LoRa-Mod在水声通信场景具备高可靠性。

Abstract

LoRa (long-range) is an emerging low-power wide-area network technology. Facing challenges such as frequency selective fading multipath channels

existing LoRa schemes are subjected to issues like low data rates and high system complexity. To address these issues

a multi-mode LoRa (MM-LoRa-Mod) based modulation scheme was proposed. The frequency shifts of the multiple multiplexed chirp signals for information transmission were utilized in this scheme

thereby significantly enhancing data rates. Additionally

for underwater acoustic communication scenarios

a low-complexity non-coherent detection algorithm for MM-LoRa-Mod was introduced. Through the evaluation of MM-LoRa-Mod’s bit error rate performance in multipath channels

Watermark underwater acoustic channels

and shallow water acoustic channels

excellent anti-multipath fading and anti-Doppler frequency shift capabilities were demonstrated

indicating the high reliability of MM-LoRa-Mod in underwater acoustic communication scenarios.

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references

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