Article
Engineering, Aerospace
Michael Lipski, Sastry Kompella, Ram M. Narayanan
Summary: This article discusses the importance of spectrum awareness and energy detection in cognitive radios. It points out the lack of data on the performance and parameters of SDR-based energy detectors, and provides detailed information on construction, testing, and experimental results. It emphasizes the importance of window length and shape on detector performance.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Umer Saeed, Syed Aziz Shah, Muhammad Zakir Khan, Abdullah Alhumaidi Alotaibi, Turke Althobaiti, Naeem Ramzan, Muhammad Ali Imran, Qammer H. Abbasi
Summary: This study presents a contactless localization method for activity recognition using radio frequency sensing and ensemble learning. Data is collected using a software-defined radio system and labeled based on activity type and location. The collected data is then preprocessed and fed into an ensemble-based machine-learning algorithm for classification. The proposed method achieves a high accuracy of up to 90% in activity recognition, demonstrating its effectiveness in contactless localization.
IEEE SENSORS JOURNAL
(2023)
Article
Computer Science, Information Systems
Johannes K. Becker, David Starobinski
Summary: To address the complexity of SDR software interfaces, researchers have developed Snout, an SDR middleware platform that encapsulates and abstracts much of the current complexity in SDR toolchains. This platform allows SDR developers to create wireless networking applications usable by a wide range of users.
IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT
(2023)
Article
Chemistry, Analytical
Marc Majoral, Carles Fernandez-Prades, Javier Arribas
Summary: This paper presents a low-cost SoC-FPGA architecture for prototyping experimental GNSS receivers. The architecture combines the flexibility of SDR techniques and the energy efficiency of FPGAs, enabling the development of compact, portable, multi-channel, multi-constellation GNSS receivers for testing novel and non-standard GNSS features.
Article
Environmental Sciences
Alexei V. Shindin, Sergey P. Moiseev, Fedor I. Vybornov, Kseniya K. Grechneva, Viktoriya A. Pavlova, Vladimir R. Khashev
Summary: The description and test results of a prototype fast ionosonde for recording ionograms once a second are presented. The key feature of this development is the use of publicly available radio-electronic components, which significantly reduces the cost. The test results showed that the ionograms recorded using the prototype are of comparable quality to those recorded using a professional ionosonde.
Article
Engineering, Electrical & Electronic
Olivier Etrillard, Robin Gerzaguet, Laurent Feichter, Malo Mabon, Antoine Courtay, Olivier Berder
Summary: This brief presents a novel low power, low latency, and low cost reconfigurable architecture for software defined radio (SDR). SDRs are widely used in various applications, but they often struggle to meet the energy consumption and throughput requirements. To address these challenges, the proposed architecture combines a generic radio component with a low power microcontroller and a Fourier transform coprocessor. A complete physical layer for audio broadcast applications is derived to demonstrate the effectiveness of the approach, achieving real-time streaming of high-definition audio with low power (437 mW) and very low latency (854 μs). The flawless execution of the processing chain on the proposed architecture paves the way for wider adoption of low power and low latency SDR architectures.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Energy & Fuels
Kelebogile Confidence Meje, Lindiwe Bokopane, Kanzumba Kusakana, Mukwanga Siti
Summary: This paper presents the implementation of real-time automated energy management control in a renewable energy hybrid system, integrated with backup and validated in a laboratory setup. The experimental setup used a fuzzy intelligent controller for energy management, the Arduino hardware platform, and the experimental results included automatic power supply to the load without human interference, visualized in MATLAB plotting.
Article
Engineering, Aerospace
Paolo Marzioli, Luigi Di Palo, Riccardo Garofalo, Luca Collettini, Niccolo Picci, Emanuele Bedetti, Paola Celesti, Linda Misercola, Clara Di Nunzio, Maria Giulia Pancalli, Caterina Rossi, Andrea Gianfermo, Alessandra Graux, Lorenzo Frezza, Federico Curiano, Francesco Santoro, Cristoforo Romanelli, Angela Volpe, Fabrizio Piergentili, Fabio Santoni
Summary: This paper describes the design of the STRAINS stratospheric experiment, including the stratospheric and ground segments, and the performance evaluation of the TDOA tracking system.
Article
Telecommunications
Ali Kooshari, Mehdi Fartash
Summary: The use of IoT technology is increasing continuously, and the data collected by sensors in the IoT environment is sent to servers. The large volume of user data in IoT applications is considered big data and is prone to various security attacks. Blockchain technology is a solution to provide data security in the Internet of Things, where all participating nodes validate the data through distributed cryptography.
WIRELESS PERSONAL COMMUNICATIONS
(2023)
Article
Computer Science, Information Systems
Marcos Inonan, Rania Hussein
Summary: This paper introduces MELODY, a model and classification framework for Software Defined Radio (SDR) remote laboratories. MELODY aims to establish standardization and evaluate the effectiveness of SDR remote labs. The paper evaluates existing projects and presents a classification framework based on engineering standards. Practical applications developed by Remote Hub Lab are explored as examples.
Article
Computer Science, Information Systems
Yanwen Wang, Jiannong Cao, Yuanqing Zheng
Summary: This article presents the design and implementation of a low-cost software-defined radio-frequency identification (RFID) system for distributed parallel sensing. The proposed solution separates the functionalities of interrogating RFID tags and receiving their backscattered signals into two modules, supporting distributed parallel sensing. Innovative techniques are developed to address practical challenges, enabling various RFID sensing applications at low implementation cost.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Engineering, Marine
Miroslav Bistrovic, Domagoj Komorcec
Summary: This paper examines GMDSS communication equipment in ship communication systems and explores the application of software-defined radio technology in the maritime domain. It proposes a new concept of SDR-based communication systems to integrate different maritime communication systems and devices, enabling flexibility and upgrades.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Computer Science, Information Systems
Phillip Smith, Anh Luong, Shamik Sarkar, Harsimran Singh, Aarti Singh, Neal Patwari, Sneha Kasera, Kurt Derr
Summary: Software defined radios (SDRs) are used in experimental evaluations of next-generation wireless technologies. However, it is difficult to test crowdsourced spectrum monitoring in the real world. To address this, we have developed a compact, portable, untethered, and inexpensive SDR called Sitara. Sitara interfaces with a mobile device over Bluetooth 5, can function standalone or as a client to a central server, and performs spectrum sensing functions.
IEEE TRANSACTIONS ON MOBILE COMPUTING
(2023)
Article
Chemistry, Multidisciplinary
Florin Radu, Petru A. Cotfas, Marian Alexandru, Titus C. Balan, Vlad Popescu, Daniel T. Cotfas
Summary: In this paper, the implementation of a system for identifying the modulation of complex radio signals is presented. An artificial intelligence model developed and integrated with Microsoft Azure cloud is used. Cloud-based platforms are considered as an alternative to conventional computers for signal processing based on artificial intelligence due to their flexibility and processing power. The system is tested using a software-defined radio platform developed in GNU Radio to ensure its viability in real signal processing systems. The results show successful identification of certain modulation types, and the use of a cloud-based platform allows quick access to the system using just a laptop with internet access.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Yihan Xu, Reza K. Amineh, Ziqian Dong, Fang Li, Kayla Kirton, Michael Kohler
Summary: This paper investigates the application of software-defined radio (SDR) and surface acoustic wave (SAW) device for wireless measurement of in situ sensor response. By collecting magnitude and phase of the response at discrete frequencies and applying inverse Fourier transform, the time domain response can be analyzed and changes in the in situ sensor response can be monitored. Comparing the results with a commercial vector network analyzer (VNA), it is demonstrated that SDR-based experiments provide satisfactory measurement of the in-situ sensors.
Article
Biochemical Research Methods
Alan P. Manning, Alex L. MacKay, Carl A. Michal
Summary: This study investigates longitudinal relaxation in white matter brain tissue, highlighting the dependence of relaxation behavior on initial conditions. The research provides insights for the design and interpretation of MRI measurements, especially those based on magnetization transfer and longitudinal relaxation.
JOURNAL OF MAGNETIC RESONANCE
(2021)
Article
Chemistry, Multidisciplinary
Amy Jenne, Wolfgang Bermel, Carl A. Michal, Oliver Gruschke, Ronald Soong, Rajshree Ghosh Biswas, Monica Bastawrous, Andre J. Simpson
Summary: The DREAMTIME method utilizes Nuclear Magnetic Resonance to provide molecular specificity and increased sensitivity by removing spectral overlap, demonstrated in various samples with a potential wide range of applications, even for unknown substances.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Applied
Francesco D'Acierno, Ryutaro Ohashi, Wadood Y. Hamad, Carl A. Michal, Mark J. MacLachlan
Summary: Chiral nematic and iridescent cellulose nanocrystal films with different monovalent cations exhibit high thermal stability during annealing, yet experience reductions in iridescence, birefringence, and transparency, along with formation of degradation products. Despite these changes, the films show potential for applications as temperature indicators and photonic devices.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Taylor Wright, Ziyue Zhang, Carl A. Michal, Savvas G. Hatzikiriakos, Michael O. Wolf
Summary: The study demonstrates the photo-oxidation of thiol functionalities into disulfide cross-links using a telluride catalyst and photo-generated singlet oxygen, resulting in degradable elastic materials. The kinetics of the process are influenced by the telluride concentration for cross-linking rate and the rate of telluride oxidation for cross-linking onset.
Article
Nanoscience & Nanotechnology
Meik Blanke, Leona Postulka, Isabelle Ciara, Francesco D'Acierno, Marcus Hildebrandt, Jochen S. Gutmann, Ronald Y. Dong, Carl A. Michal, Michael Giese
Summary: Dynamic covalent bonds have great potential for the development of adaptive and self-healing materials. Researchers have introduced a versatile concept for the design of low molecular weight liquid crystals and their in situ postsynthetic modification using the dynamic covalent nature of imine bonds. This methodology allows systematic investigations of structure-property relationships and manipulation of material behavior and additional properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yi-Tao Xu, Christopher M. Walters, Francesco D'Acierno, Wadood Y. Hamad, Carl A. Michal, Mark J. MacLachlan
Summary: Water-resistant covalently crosslinked chiral photonic composite films of cellulose nanocrystals (CNCs) have been developed by incorporating epoxy resin (ER), demonstrating mechanical adaptability and responsive chiral optical properties in water.
CHEMISTRY OF MATERIALS
(2022)
Article
Biochemical Research Methods
Sarah R. Morris, Rebecca Frederick, Alex L. MacKay, Cornelia Laule, Carl A. Michal
Summary: Inhomogeneous magnetization transfer (ihMT) is a novel MRI technique with strong orientation dependence, used to measure white matter myelination in the brain and spinal cord. The study found that all three ihMT parameters showed significant orientation dependence, and the results were used to calculate the orientation dependence in a model.
JOURNAL OF MAGNETIC RESONANCE
(2022)
Article
Multidisciplinary Sciences
Yuta Dobashi, Dickson Yao, Yael Petel, Tan Ngoc Nguyen, Mirza Saquib Sarwar, Yacine Thabet, Cliff L. W. Ng, Ettore Scabeni Glitz, Giao Tran Minh Nguyen, Cedric Plesse, Frederic Vidal, Carl A. Michal, John D. W. Madden
Summary: The human somatosensory network relies on ionic currents to sense, transmit, and process tactile information. Researchers have discovered hydrogels that can transduce pressure into ionic currents, forming a piezoionic skin. These currents can directly modulate neurons and excite muscles, presenting a potential path towards bionic sensory interfaces.
Review
Biophysics
David C. Alsop, Ece Ercan, Olivier M. Girard, Alex L. Mackay, Carl A. Michal, Gopal Varma, Elena Vinogradov, Guillaume Duhamel
Summary: Off-resonance radio frequency irradiation can induce the ordering of proton spins in the dipolar fields of their neighbors, in molecules with restricted mobility. This dipolar order decays with a characteristic relaxation time, T-1D, that is very different from the T-1 and T-2 relaxation of the nuclear alignment with the main magnetic field. Inhomogeneous magnetization transfer (ihMT) imaging is a refinement of magnetization transfer (MT) imaging that isolates the MT signal dependence on dipolar order relaxation times within motion-constrained molecules.
NMR IN BIOMEDICINE
(2023)
Article
Chemistry, Multidisciplinary
Francesco D'Acierno, Kiavash Bakrani, Wadood Y. Hamad, Carl A. Michal, Mark J. MacLachlan
Summary: The properties of cellulose nanocrystal films can be modified through external stimuli. By treating the suspension prior to casting, the optical and thermal properties of the films can be tuned. The synthesis of films with different properties enables unprecedented photonic and thermal control. The effects of the stimuli can be used to predict and choose desired characteristics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Oriana M. Vanderfleet, Francesco D'Acierno, Akira Isogai, Mark J. MacLachlan, Carl A. Michal, Emily D. Cranston
Summary: This study investigated the thermal performance of carboxylated cellulose nanocrystals (CNCs) with varying physicochemical properties and found that they are more thermally stable in acid form than in sodium form. The content of sulfate groups had a greater effect on CNC thermal stability. The catalytic effect of sodium in highly charged carboxylated CNCs and the formation of sodium carbonate in moderately charged, esterified CNCs led to more structural degradation of cellulose in sodium form.
CHEMISTRY OF MATERIALS
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Sarah R. Morris, Irene M. Vavasour, Anastasia Smolina, Erin L. MacMillan, Guillaume Gilbert, Michelle Lam, Piotr Kozlowski, Carl A. Michal, Alan Manning, Alex L. MacKay, Cornelia Laule
Summary: This study investigated the correlation, reproducibility, and effect of white matter fiber orientation for three myelin-sensitive MRI techniques: MTR, ihMTR, and MWF. The results showed a strong correlation between ihMTR and MTR, and ihMTR and MWF, suggesting that these techniques are measuring the same myelination. MWF had a larger dynamic range and may provide more power to detect small differences in myelin.
MAGNETIC RESONANCE IN MEDICINE
(2023)
Article
Chemistry, Analytical
Katelyn Downey, Carl A. Michal, Wolfgang Bermel, Amy Jenne, Ronald Soong, Venita Decker, Falko Busse, Benjamin Goerling, Hermann Heumann, Holger Boenisch, Marcel Gundy, Andre Simpson
Summary: Chemical characterization of complex mixtures by NMR spectroscopy is challenging due to spectral overlap and low sensitivity. A 13C version of DREAMTIME NMR is introduced, allowing selective detection of compounds of interest and increasing signal intensity. This method is successfully demonstrated for analyzing amino acids and metabolites in 13C-enriched samples, as well as for tracking metabolic processes and monitoring reactions. 13C-DREAMTIME shows great potential for future applications.
ANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Francesco D'Acierno, Carl A. Michal, Mark J. MacLachlan
Summary: This article provides a comprehensive literature review on the thermal stability of cellulose nanomaterials (CNMs). It identifies five major factors affecting CNMs' thermal stability and establishes a quantitative relationship between thermal stability and seven variables using multiple linear least-squares regression. The findings of this study can guide the design of CNMs with predictable thermal properties and the identification of optimal conditions for achieving high thermal stability.
Article
Chemistry, Analytical
Daniel H. Lysak, Wolfgang Bermel, Vincent Moxley-Paquette, Carl Michal, Rajshree Ghosh-Biswas, Ronald Soong, Ben Nashman, Andressa Lacerda, Andre J. Simpson
Summary: In this study, a slice-selective 2D heteronuclear NMR sequence was developed for the study of layered and other inhomogeneous samples. The method was demonstrated on standard samples and successfully applied to observe metabolite changes in living earthworms. Slice-selective NMR shows significant potential for the analysis of complex samples.
ANALYTICAL CHEMISTRY
(2023)
