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In this paper, we propose Morph, a LoRa encoder-decoder co-design to enhance communication reliability while improving its computation efficiency in extremely-low signal-to-noise ratio (SNR) situations. The standard LoRa encoder controls 6…

Networking and Internet Architecture · Computer Science 2025-07-31 Yidong Ren , Maolin Gan , Chenning Li , Shakhrul Iman Siam , Mi Zhang , Shigang Chen , Zhichao Cao

Linear chirp-based underwater acoustic communication has been widely used due to its reliability and long-range transmission capability. However, unlike the counterpart chirp technology in wireless -- LoRa, its throughput is severely…

Signal Processing · Electrical Eng. & Systems 2023-11-30 Wenjun Xie , Enqi Zhang , Lizhao You , Deqing Wang , Zhaorui Wang , Liqun Fu

Long-range low-power wireless communications, such as LoRa, are used in many IoT and environmental monitoring applications. They typically increase the communication range to several kilometers, at the cost of reducing the bitrate to a few…

Networking and Internet Architecture · Computer Science 2018-04-03 Nancy El Rachkidy , Alexandre Guitton , Megumi Kaneko

This paper proposes the use of a LoRa like chirp spread spectrum physical layer as the basis for a new Power Line Communication modulation scheme suited for low-bandwidth communication. It is shown that robust communication can be…

Signal Processing · Electrical Eng. & Systems 2021-06-29 Stephen Robson , Abderrahmane Haddad

In this work, we examine the performance of the LoRa chirp spread spectrum modulation in the presence of both additive white Gaussian noise and interference from another LoRa user. To this end, we extend an existing interference model to…

Signal Processing · Electrical Eng. & Systems 2019-05-03 Orion Afisiadis , Matthieu Cotting , Andreas Burg , Alexios Balatsoukas-Stimming

Low-Power Wide-Area Networks (LPWANs) are an emerging Internet-of-Things (IoT) paradigm marked by low-power and long-distance communication. Among them, LoRa is widely deployed for its unique characteristics and open-source technology. By…

Networking and Internet Architecture · Computer Science 2023-05-03 Jialuo Du , Yidong Ren , Mi Zhang , Yunhao Liu , Zhichao Cao

LoRa is currently one of the most widely used low-power wide-area network (LPWAN) technologies. The physical layer leverages a chirp spread spectrum modulation to achieve long-range communication with low power consumption. Synchronization…

Signal Processing · Electrical Eng. & Systems 2025-05-06 Joachim Tapparel , Andreas Burg

Chirp spread spectrum (CSS) is the modulation technique currently employed by Long-Range (LoRa), which is one of the most prominent Internet of things wireless communications standards. The LoRa physical layer (PHY) employs CSS on top of a…

Signal Processing · Electrical Eng. & Systems 2021-06-11 Ivo Bizon Franco de Almeida , Marwa Chafii , Ahmad Nimr , Gerhard Fettweis

In this letter, we propose dual-mode chirp spread spectrum (DM-CSS) modulation for low-power wide-area networks. DM-CSS is capable of achieving a higher spectral efficiency (SE) relative to its counterparts, such as Long Range (LoRa)…

Signal Processing · Electrical Eng. & Systems 2022-08-23 Ali Waqar Azim , Ahmad Bazzi , Raed Shubair , Marwa Chafii

Long range communication with LoRa has become popular as it avoids the complexity of multi-hop communication at low cost and low energy consumption. LoRa is openly accessible, but its packets are particularly vulnerable to collisions due to…

Networking and Internet Architecture · Computer Science 2025-05-14 José Álamos , Thomas C. Schmidt , Matthias Wählisch

LoRaWAN is a prominent communication standard to enable reliable low-power, long-range communications for the Internet of Things (IoT). The modulation technique used in LoRaWAN, commonly known as LoRa modulation, is based on the principle…

Signal Processing · Electrical Eng. & Systems 2021-05-07 Tung T. Nguyen , Ha H. Nguyen

This paper presents Super-LoRa, a novel approach to enhancing the throughput of LoRa networks by leveraging the inherent robustness of LoRa modulation against interference. By superimposing multiple payload symbols, Super-LoRa significantly…

Signal Processing · Electrical Eng. & Systems 2025-04-17 Salah Abdeljabar , Mohamed-Slim Alouini

LoRa is a widely recognized modulation technology in the field of low power wide area networks (LPWANs). However, the data rate of LoRa is too low to satisfy the requirements of Internet of Things applications. To address this issue, we…

Signal Processing · Electrical Eng. & Systems 2025-10-28 Hao Zeng , Huan Ma , Yi Fang , Pingping Chen , Wenkun Wen , Tierui Min

LoRa is a chirp spread-spectrum modulation developed for the Internet of Things. In this work, we examine the performance of LoRa in the presence of both additive white Gaussian noise and interference from another LoRa user. To this end, we…

Signal Processing · Electrical Eng. & Systems 2019-12-04 Orion Afisiadis , Matthieu Cotting , Andreas Burg , Alexios Balatsoukas-Stimming

Long Range (LoRa) has become a key enabler technology for low power wide area networks. However, due to its ALOHA-based medium access scheme, LoRa has to cope with collisions that limit the capacity and network scalability. Collisions…

Signal Processing · Electrical Eng. & Systems 2022-04-15 Qiaohan Zhang , Ivo Bizon , Atul Kumar , Ana Belen Martinez , Marwa Chafii , Gerhard Fettweis

LoRaWAN is nowadays one of the most popular protocols for low-power Internet-of-Things communications. Although its physical layer, namely LoRa, has been thoroughly studied in the literature, aspects related to the synchronization of LoRa…

Signal Processing · Electrical Eng. & Systems 2021-08-03 Mathieu Xhonneux , Orion Afisiadis , David Bol , Jérôme Louveaux

In this paper we present a new modulation, called DLoRa, similar in principle to the conventional LoRa modulation and compatible with it in terms of bandwidth and numerology. DLoRa departs from the conventional LoRa modulation as it is…

Networking and Internet Architecture · Computer Science 2020-10-29 Lorenzo Vangelista , Alessandro Cattapan

LoRa has become a cornerstone for city-wide IoT applications due to its long-range, low-power communication. It achieves extended transmission by spreading symbols over multiple samples, with redundancy controlled by the Spreading Factor…

Networking and Internet Architecture · Computer Science 2025-11-25 Weiwei Chen , Huaxuan Xiao , Jiefeng Zhang , Xianjin Xia , Shuai Wang , Xianjun Deng , Dan Zeng

This paper considers the use of successive interference cancellation (SIC) to decode superposed signals in Long Range (LoRa) networks. We build over a known stochastic geometry model for LoRa networks and include the effect of recovering…

Information Theory · Computer Science 2020-10-20 J. M. de Souza Sant'Ana , A. Hoeller , R. D. Souza , H. Alves , S. Montejo-Sánchez

Low-Rank Adaptation (LoRA) is extensively utilized in text-to-image models for the accurate rendition of specific elements like distinct characters or unique styles in generated images. Nonetheless, existing methods face challenges in…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Ming Zhong , Yelong Shen , Shuohang Wang , Yadong Lu , Yizhu Jiao , Siru Ouyang , Donghan Yu , Jiawei Han , Weizhu Chen
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