A New LoRa-like Transceiver Suited for LEO Satellite Communications [PDF]
Sensors, 2022 LoRa is based on the chirp spread spectrum (CSS) modulation, which has been developed for low power and long-range wireless Internet of Things (IoT) communications.
Mohamed Amine Ben Temim +2 more
doaj +2 more sources
The New Era of Long-Range “Zero-Interception” Ambient Backscattering Systems: 130 m with 130 nA Front-End Consumption [PDF]
Sensors, 2022 Internet of Things applications based on backscatter radio principles have appeared to address the limitations of high cost and high power consumption. While radio-frequency identification (RFID) sensor nodes are among the most commonly utilized state-of-
Spyridon Nektarios Daskalakis +4 more
doaj +2 more sources
M-Ary Direct Modulation Chirp Spread Spectrum for Spectrally Efficient Communications
Information, 2023 Spread spectrum techniques, such as the Chirp Spread Spectrum (CSS) used by LoRa technology, are important for machine-to-machine communication in the context of the Internet of Things.
Jocelyn Edinio Zacko Gbadoubissa +3 more
doaj +3 more sources
Success Probability Characterization of Long-Range in Low-Power Wide Area Networks [PDF]
Sensors, 2020 In low-power wide area networks (LPWAN), a considerable number of end devices (EDs) communicate with the gateway in a certain area, whereas for transmitted data, a low data rate and high latency are allowed.
Yi-Kang Kim, Seung-Yeon Kim
doaj +2 more sources
Experimental Results of Underwater Acoustic Communication with Nonlinear Frequency Modulation Waveform [PDF]
Sensors, 2021 In this paper, we propose underwater acoustic (UWA) communications using a generalized sinusoidal frequency modulation (GSFM) waveform, which has a distinct ambiguity function (AF) and correlation function characteristic.
Jeongha An +3 more
doaj +2 more sources
A Tutorial on Chirp Spread Spectrum Modulation for LoRaWAN: Basics and Key Advances
IEEE Open Journal of the Communications SocietyChirp spread spectrum (CSS) signal is the heart of long-range (LoRa) modulation, also known as CSS modulation, and is used in long-range wide area network (LoRaWAN) in Internet of things (IoT) scenarios.
Alireza Maleki +3 more
doaj +3 more sources
Analysis of Coverage in LoRa using secured IoT Systems [PDF]
E3S Web of Conferences, 2023 Long Range (LoRa) is an unlicensed Low Power Wide Area Network for the application of the Internet of Things (IoT). This LoRa technology is mainly suitable for smart city applications since this technology consumes low power, low cost, and transfer ...
Karthigaichelvi R., Balakumar B
doaj +1 more source
SSK-Based PSK-LoRa Modulation for IoT Communications
IEEE Open Journal of the Communications Society, 2023 LoRa has been considered as a key enabler for the next generation Internet of Things (IoT) networks. However, the low spectral efficiency (SE) of chirp spread spectrum (CSS) modulation used in LoRa is a fatal drawback for its extensive applications in ...
Quantao Yu +3 more
doaj +1 more source
Performance analysis of DSSS- and CSS-based physical layer for IoT transmission over LEO satellites
ETRI Journal, 2022 To determine a suitable waveform for Internet of Things (IoT) transmission over low-Earth orbit (LEO) satellites, this paper reports the results of a performance comparison between chirp spread spectrum (CSS)-based LoRa and direct sequence spread ...
Sooyeob Jung +5 more
doaj +1 more source
Performance Analysis of the Pilot and Data Component of a CSS Signal for LEO-PNT
Engineering Proceedings, 2023 From the analysis of chirp spread spectrum (CSS) signals in radar and communication applications, we can distinguish the cases of estimating only data or time-delay propagation or Doppler frequency when all the other parameters are known or set to zero ...
Daniel Egea-Roca +2 more
doaj +1 more source