Results 21 to 30 of about 2,083,913 (216)
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
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Design of Noncoherent and Coherent Receivers for Chirp Spread Spectrum Systems
IEEE Internet of Things Journal, 2022 The main ideas and algorithms presented in this paper were originally described in a technical report accompanying a U.S. provisional patent application no.
Tung T. Nguyen, Ha H. Nguyen 0001
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Dual-Mode Time Domain Multiplexed Chirp Spread Spectrum [PDF]
, 2022 We propose a dual-mode (DM) time domain multiplexed (TDM) chirp spread spectrum (CSS) modulation for spectral and energy-efficient low-power wide-area networks (LPWANs).
Shubair, Raed +4 more
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Dual-Mode Time Domain Multiplexed Chirp Spread Spectrum
IEEE Transactions on Vehicular Technology, 2023 We propose a dual-mode (DM) time domain multiplexed (TDM) chirp spread spectrum (CSS) modulation for spectral and energy-efficient low-power wide-area networks (LPWANs). DM-CSS modulation that uses both the even and odd cyclic time shifts has been proposed for LPWANs to achieve noteworthy performance improvement over classical counterparts.
Ali Waqar Azim +4 more
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Multiuser Detection for Downlink Communication in LoRa- Like Networks
IEEE Access, 2020 Internet of Things (IoT) technology has become ubiquitous in a multitude of applications and its use is growing. However, the expansion of IoT faces a major difficulty: scalability, that is, very dense deployment of communicating devices is currently ...
Angesom Ataklity Tesfay +3 more
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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
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Editorial Note: Impact of COVID-19 on Spectrum operations
, 2020 To support our authors, reviewers and editors during the COVID-19 pandemic, the Spectrum Editorial Board has relaxed its timelines for the publication of this most recent issue (Issue 5). We are working with our authors on their Issue 5 submissions,
Editorial Board, Spectrum
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Scalability Concerns of Chirp Spread Spectrum for LPWAN Applications
International Journal of Ad hoc, Sensor & Ubiquitous Computing, 2019 Divergent modulation schemes have been proposed for the Internet of Things (IoT). Low Power Wide Area Networks (LPWAN) technologies are gaining unprecedented acceptance in IoT application of sensor networks. Chirp Spread Spectrum (CSS) is a prominent modulation technique proposed for LPWAN.
Aiju Thomas, N V Eldhose,
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IEEE Access, 2022 This work presents in detail a new method for the optimization of rectangular spread spectrum excitation signals for its use in simple and low-cost ultrasonic pulsers, but that could be extended to other applications based on spread spectrum signals ...
A. Rodriguez-Martinez +6 more
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Spread spectrum algorithm resistance to wideband non-stationary interference
The Journal of Engineering, 2019 This study proposes a multi-ary modulation chirp spread spectrum algorithm specific for the unmanned aerial vehicles field. It further introduces the corresponding fractional Fourier transform de-spreading algorithm and the hardware implementation of the
Chenlu Zhang +3 more
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