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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…

网络与互联网体系结构 · 计算机科学 2025-05-14 José Álamos , Thomas C. Schmidt , Matthias Wählisch

This paper presents a novel LoRa (Long Range) receiver operating in frequency selective Multi-Path Channel (MPC). The dechirped received LoRa wave-forms under MPC allows us to derive a simple and efficient LoRa receiver scheme by using a MF…

信号处理 · 电气工程与系统科学 2022-03-22 Clement Demeslay , Philippe Rostaing , Roland Gautier

LoRaWAN has emerged as one of the promising low-power wide-area network technologies to enable long-range sensing and monitoring applications in Internet of Things. The LoRa physical layer used in LoRaWAN suffers from low data rates and…

信号处理 · 电气工程与系统科学 2020-02-04 Akshay Ramesh Jadhav , P. Rajalakshmi

LoRA has emerged as one of the most promising fine-tuning techniques, especially for federated learning (FL), since it significantly reduces communication and computation costs at resource-constrained clients. However, data heterogeneity…

Low power wide area network technologies (LPWANs) are attracting attention because they fulfill the need for long range low power communication for the Internet of Things. LoRa is one of the proprietary LPWAN physical layer (PHY)…

信息论 · 计算机科学 2019-02-21 Reza Ghanaatian , Orion Afisiadis , Matthieu Cotting , Andreas Burg

We present a novel cross layer approach to random access (RA) that combines physical-layer network coding (PLNC) with multiuser detection (MUD). PLNC and MUD are applied jointly at the physical level in order to extract any linear…

网络与互联网体系结构 · 计算机科学 2014-06-19 Giuseppe Cocco , Stephan Pfletschinger , Monica Navarro

In LoRa (Long Range), when a collision occurs in the network, each end-device has to retransmit its colliding frame, which reduces the throughput, and increases the energy consumption of the end-devices and the delay of the frames. In this…

网络与互联网体系结构 · 计算机科学 2019-02-15 Samira Abboud , Nancy El Rachkidy , Alexandre Guitton

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…

信号处理 · 电气工程与系统科学 2021-08-03 Mathieu Xhonneux , Orion Afisiadis , David Bol , Jérôme Louveaux

The long-range and low energy consumption requirements in Internet of Things (IoT) applications have led to a new wireless communication technology known as Low Power Wide Area Network (LPWANs). In recent years, the Long Range (LoRa)…

网络与互联网体系结构 · 计算机科学 2022-10-27 Reza Serati , Benyamin Teymuri , Nikolaos Athanasios Anagnostopoulos , Mehdi Rasti

LoRa is a popular low-power wide-area network (LPWAN) technology that uses spread-spectrum to achieve long-range connectivity and resilience to noise and interference. For energy efficiency reasons, LoRa adopts a pure ALOHA access scheme,…

信号处理 · 电气工程与系统科学 2020-12-16 Mathieu Xhonneux , Joachim Tapparel , Orion Afisiadis , Alexios Balatsoukas-Stimming , Andreas Burg

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…

信号处理 · 电气工程与系统科学 2025-04-17 Salah Abdeljabar , Mohamed-Slim Alouini

LoRa is the proprietary physical layer (PHY) of LoRaWAN, which is a popular Internet-of-Things (IoT) protocol enabling low-power devices to communicate over long ranges. A number of reverse engineering attempts have been published in the…

信号处理 · 电气工程与系统科学 2020-02-24 Joachim Tapparel , Orion Afisiadis , Paul Mayoraz , Alexios Balatsoukas-Stimming , Andreas Burg

Thanks to its simplicity and cost efficiency, wireless local area network (WLAN) enjoys unique advantages in providing high-speed and low-cost wireless services in hot spots and indoor environments. Traditional WLAN medium-access-control…

性能 · 计算机科学 2007-10-04 Ying Jun Zhang , Peng Xuan Zheng , Soung Chang Liew

Thanks to its simplicity and cost efficiency, wireless local area network (WLAN) enjoys unique advantages in providing high-speed and low-cost wireless services in hot spots and indoor environments. Traditional WLAN medium-access-control…

网络与互联网体系结构 · 计算机科学 2010-06-24 Ying Jun , Zhang , Pengxuan Zheng , Soung Chang Liew

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…

信号处理 · 电气工程与系统科学 2025-05-06 Joachim Tapparel , Andreas Burg

In this paper, we introduce Symmetric Low-Rank Adapters, an optimized variant of LoRA with even fewer weights. This method utilizes Low-Rank Symmetric Weight Matrices to learn downstream tasks more efficiently. Traditional LoRA accumulates…

机器学习 · 计算机科学 2025-04-17 Tales Panoutsos , Rodrygo L. T. Santos , Flavio Figueiredo

Low-Rank Adaptation (LoRA) is a parameter-efficient technique for rapidly fine-tuning foundation models. In standard LoRA training dynamics, models tend to quickly converge to a local optimum near the initialization. However, this local…

机器学习 · 计算机科学 2024-10-31 Zhan Zhuang , Xiequn Wang , Yulong Zhang , Wei Li , Yu Zhang , Ying Wei

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…

网络与互联网体系结构 · 计算机科学 2023-05-03 Jialuo Du , Yidong Ren , Mi Zhang , Yunhao Liu , Zhichao Cao

This paper investigates a new model to improve the scalability of low-power long-range (LoRa) networks by allowing multiple end devices (EDs) to simultaneously communicate with multiple multi-antenna gateways on the same frequency band and…

信号处理 · 电气工程与系统科学 2021-11-22 The Khai Nguyen , Ha H. Nguyen , Ebrahim Bedeer

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…

网络与互联网体系结构 · 计算机科学 2018-04-03 Nancy El Rachkidy , Alexandre Guitton , Megumi Kaneko
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