Analytical and Simulation study for LoRa Modulation

Mroue, Hussein; Nasser, Abbass; Parrein, Benoît; Hamrioui, Sofiane; Mona-Cruz, E.; Rouyer, Gilles

doi:10.1109/ict.2018.8464879

Cited by 40 publications

(19 citation statements)

References 14 publications

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“…The results for the non-quantized case can be corroborated by the simulated BER measurements of typical LoRa systems given in both [6,14]. It is evident that the results for most of the quantized cases match the non-quantized results, with the exception of the case with two-bit fractional precision.…”

Section: Simulation Resultssupporting

confidence: 65%

Reducing the Cost of Implementing Filters in LoRa Devices

Stewart

Nguyen

Barton

et al. 2019

Sensors

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This paper presents two methods to optimize LoRa (Low-Power Long-Range) devices so that implementing multiplier-less pulse shaping filters is more economical. Basic chirp waveforms can be generated more efficiently using the method of chirp segmentation so that only a quarter of the samples needs to be stored in the ROM. Quantization can also be applied to the basic chirp samples in order to reduce the number of unique input values to the filter, which in turn reduces the size of the lookup table for multiplier-less filter implementation. Various tests were performed on a simulated LoRa system in order to evaluate the impact of the quantization error on the system performance. By examining the occupied bandwidth, fast Fourier transform used for symbol demodulation, and bit-error rates, it is shown that even performing a high level of quantization does not cause significant performance degradation. Therefore, the memory requirements of LoRa devices can be significantly reduced by using the methods of chirp segmentation and quantization so as to improve the feasibility of implementing multiplier-less filters in LoRa devices.

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Section: Simulation Resultssupporting

confidence: 65%

Reducing the Cost of Implementing Filters in LoRa Devices

Stewart

Nguyen

Barton

et al. 2019

Sensors

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“…The CR improves the robustness of code receiving of 4-bit data with redundancies for error correction in variants 4/5, 4/6, 4/7, or 4/8. The bit rate of LoRa is calculated according to the following equation [ 68 , 69 ]:

where

is the spreading faktor;

is the band width;

is the code rate.…”

Section: Matherial and Methodsmentioning

confidence: 99%

An Integrated IoT Architecture for Smart Metering Using Next Generation Sensor for Water Management Based on LoRaWAN Technology: A Pilot Study

Slaný

Lucansky

Koudelka

et al. 2020

Sensors

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This pilot study focuses on the design, implementation, optimization and verification of a novel solution of smart measuring of water consumption and crisis detection leading to a smart water management platform. The system implemented consists of a modular IoT platform based on a PCB (Printed Circuit Board) design using the M2.COM standard, a LoraWAN modem and a LoraWAN gateway based on the Raspberry Pi platform. The prototype is modular, low-cost, low-power, low-complex and it fully reflects the requirements of strategic technological concepts of Smart City and Industry 4.0, i.e., data integration, interoperability, (I)IoT, etc. The study was produced in cooperation with M.I.S Protivanov and VODARENSKA AKCIOVA SPOLECNOST, a.s. (industry partners distributing drinking water in the Olomouc and South-Moravian regions) to depict the current situation in the Czech Republic, characterized by extreme weather fluctuations and increasingly frequent periods of drought. These drinking water distributors are also constantly placing new demands on these smart solutions. These requirements include, above all, reliability of data transmission, modularity and, last but not least, low cost. However, smart water management (water consumption, distribution, system identification, equipment maintenance, etc.) is becoming an important topic worldwide. The functionality of the system was first verified in laboratory conditions and, then, in real operation. The study also includes checking signal propagation in the municipal area of the village of Zdarna, where the radius of the proposed measuring system was tested. A laboratory test with simulation of water leakage is also part of this work. Subsequently, the system was tested in a residential unit by means of water leakage detection using the MNF method (minimum night flow); the detection success rate was 95%.

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“…LoRa is known as the PHY layer of communication defined by the Semtech Corporation [35]. It operates under an ALOHA transmission scheme and uses the chirp spread spectrum (CSS) as a modulation technique, and usable channels are quasi-orthogonal [36]. The most important features are small data transmission, low energy consumption, and a high communication range, enabling long-distance communication.…”

Section: Lora Technology For Ami Communicationmentioning

confidence: 99%

LoRa IoT-Based Architecture for Advanced Metering Infrastructure in Residential Smart Grid

2021

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Internet of Things (IoT) technologies are opening new opportunities and services for different smart grid applications such as advanced meter infrastructures (AMI), distributed energy resources, and electric vehicles. Among these applications, AMIs represent the first step toward future smart grid implementation by enabling the reading and recording of electric power consumption on request or a schedule. In this study, the main focus is designing an IoT-based architecture to support AMIs' daily reporting and billing in a residential grid. First, the network modeling for AMI is discussed. Long range (LoRa) technology, as one of the promising candidates for long range low power wide area networks (LPWANs), has been studied and discussed. A comprehensive analysis of the LoRa-based architecture is given for a case study of an actual residential grid, Puerto Montt, Chile. The results are analyzed and discussed for packet delivery ratio, energy consumption, throughput, number of collisions, and frequency distribution.

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Analytical and Simulation study for LoRa Modulation

Cited by 40 publications

References 14 publications

Reducing the Cost of Implementing Filters in LoRa Devices

Reducing the Cost of Implementing Filters in LoRa Devices

An Integrated IoT Architecture for Smart Metering Using Next Generation Sensor for Water Management Based on LoRaWAN Technology: A Pilot Study

LoRa IoT-Based Architecture for Advanced Metering Infrastructure in Residential Smart Grid

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