Time Domain Multiplexed LoRa Modulation Waveform Design for IoT Communication

An, Shixiang; Wang, Hua; Sun, Yiwei; Lu, Zhiping; Yu, Quantao

doi:10.1109/lcomm.2022.3146511

“…Vannamei shrimp (Litopenaeus vannamei), also known as Pacific white shrimp or King shrimp, is a species of shrimp from the eastern Pacific Ocean commonly caught or farmed for food. Before further discussing the automation system that will be built using LoRaWAN [5]- [9], first understand what objects will be monitored in real-time. It is a member of the family Penaeidae, which also includes the black tiger shrimp and giant tiger shrimp.…”

Section: Theory 21 Cultivation and Treatment Of Vaname Shrimpmentioning

confidence: 99%

Analysis of IoT-LoRa to Improve LoRa Performance for Vaname Shrimp Farming Monitoring System

Adi,

Ardi,

Plamonia

et al. 2024

J. Ilm. Tek. Elektro Komput. Dan Inform

0

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Shrimp farming requires a touch that must be right on the side of water quality; water is a fundamental factor that must be met to achieve maximum yields. Many factors affect the quality of the water, but some things cause changes in water quality caused by external and internal factors causing death in shrimp. Disease conditions in shrimp can attack at any time, coupled with external factors such as extreme climate change, and cause changes in water components such as water pH, CaMg or hardness, and other factors that cause death in shrimp. Water turbidity oxygen demand (DO) in water determines the life of shrimp. It is coupled with microorganisms that must be maintained to maintain water quality for the growth of a Vaname shrimp. This research raises the Aquaculture System, specifically in the process of intelligent monitoring of water quality in shrimp nurseries to the shrimp harvest process, especially vaname shrimp from the results of observations use three sensors connected to LoRaWAN is able to provide real-time data from pond water and transmit it to LoRa Server or Internet Server, and the realtime data can be read through a Smartphone. This research analyzes in detail the ability of LoRaWAN to send multi-sensor data and Quality of Service LoRaWAN communication at different distances. This research also discusses how the LoRa antenna design can be developed to improve the performance of LoRa as transmitting devices or Radio Frequency 920-923 MHz for sending sensor data for Aquaculture. The contribution of this research is shown in the realtime monitoring system of the water environment, namely water pH, ammonia, turbidity, DO, salinity, water temperature, and nitrate in vaname shrimp ponds. The following contribution is the development of LoRaWAN with Tago IO servers capable of being used in Smart Aquaculture for contributions to The Things Network community or LoRaWAN Community.

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“…The main idea of TDM-CSS is to simultaneously incorporate both up-chirps and down-chirps yielding a time-domain multiplex LoRa symbol [54]. Unlike SSK-LoRa, where chirping is used to encode information, TDM-CSS uses chirping to multiplex LoRa waveforms.…”

Section: N Time-domain Multiplex-css (Tdm-css)mentioning

confidence: 99%

“…Marwa Chafii is also with NYU WIRELESS, NYU Tandon School of Engineering, Brooklyn, 11201, NY, USA . [13], [14], [15], [16], [17], [18], [19] have been explored. The waveform design of these CSS variants has been studied indepth in [20], which include some schemes that use FSs in both the in-phase and quadrature components, like [6], [10], [13].…”

Section: Introductionmentioning

confidence: 99%

A Survey on Chirp Spread Spectrum-based Waveform Design for IoT

Azim¹,

Bazzi²,

Shubair³

et al. 2022

Preprint

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<p>Long Range (LoRa) is one of the most promising and widespread chirp spread spectrum (CSS)-based physical (PHY) layer technique for low-power wide-area networks (LPWANs). Using different spreading factors, LoRa can attain different spectral/energy efficiencies, and can target multitude of Internet-of-Thing (IoT) applications. However, one of the limiting factors for LoRa is the low bit rate. Little to no effort has been made in order to improve the achievable rate of LoRa, until recently, when a number of CSS-based PHY layer LoRa alternative are proposed for LPWANs. In this survey, for the first time, we present a comprehensive waveform design of these CSS-based schemes that have been proposed between 2019 to 2022. In total, fifteen alternatives to LoRa are compared. Other survey articles related to LoRa mostly tackle different issues, such as LoRa networking, LoRa deployment in massive IoT networks, and LoRa architectures, etc. This survey, on the other hand, comprehensively elucidates the waveform design of LoRa alternatives. The CSS schemes studied in this survey are divided into single chirp, multiple chirp, and index modulation based on the multiplexing pattern of the chirps. Complete transceiver architecture of these CSS schemes is studied, and performance is evaluated in terms of energy efficiency (EE), spectral efficiency (SE), bit-error rate (BER) performance in additive white Gaussian noise, BER in the presence of phase and frequency offsets. It has been observed that the EE, SE and robustness against the offsets is primarily linked to transmit symbol frame structure. The public versions of the MATLAB codes for the CSS schemes studied in this survey shall be provided to promote reproducible research.</p>

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“…The main idea of TDM-CSS is to simultaneously incorporate both up-chirps and down-chirps yielding a timedomain multiplex LoRa symbol [54]. Unlike SSK-LoRa, where chirping is used to encode information, TDM-CSS uses chirping to multiplex LoRa waveforms.…”

Section: N Time-domain Multiplex-css (Tdm-css)mentioning

confidence: 99%

“…2) Detection: In [54], the authors have proposed the noncoherent detection for TDM-CSS, however, the coherent detection for TDM-CSS is also possible. Hereby, we shall provide both the coherent and the non-coherent detection mechanisms for TDM-CSS.…”

Section: N Time-domain Multiplex-css (Tdm-css)mentioning

confidence: 99%

A Survey on Chirp Spread Spectrum-based Waveform Design for IoT

Azim¹,

Bazzi²,

Shubair³

et al. 2022

Preprint

0

View full text Add to dashboard Cite

<p>Long Range (LoRa) is one of the most promising and widespread chirp spread spectrum (CSS)-based physical (PHY) layer technique for low-power wide-area networks (LPWANs). Using different spreading factors, LoRa can attain different spectral/energy efficiencies, and can target multitude of Internet-of-Thing (IoT) applications. However, one of the limiting factors for LoRa is the low bit rate. Little to no effort has been made in order to improve the achievable rate of LoRa, until recently, when a number of CSS-based PHY layer LoRa alternative are proposed for LPWANs. In this survey, for the first time, we present a comprehensive waveform design of these CSS-based schemes that have been proposed between 2019 to 2022. In total, fifteen alternatives to LoRa are compared. Other survey articles related to LoRa mostly tackle different issues, such as LoRa networking, LoRa deployment in massive IoT networks, and LoRa architectures, etc. This survey, on the other hand, comprehensively elucidates the waveform design of LoRa alternatives. The CSS schemes studied in this survey are divided into single chirp, multiple chirp, and index modulation based on the multiplexing pattern of the chirps. Complete transceiver architecture of these CSS schemes is studied, and performance is evaluated in terms of energy efficiency (EE), spectral efficiency (SE), bit-error rate (BER) performance in additive white Gaussian noise, BER in the presence of phase and frequency offsets. It has been observed that the EE, SE and robustness against the offsets is primarily linked to transmit symbol frame structure. The public versions of the MATLAB codes for the CSS schemes studied in this survey shall be provided to promote reproducible research.</p>

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Time Domain Multiplexed LoRa Modulation Waveform Design for IoT Communication

Cited by 17 publications

References 13 publications

Analysis of IoT-LoRa to Improve LoRa Performance for Vaname Shrimp Farming Monitoring System

Analysis of IoT-LoRa to Improve LoRa Performance for Vaname Shrimp Farming Monitoring System

A Survey on Chirp Spread Spectrum-based Waveform Design for IoT

A Survey on Chirp Spread Spectrum-based Waveform Design for IoT

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