Applying Low-Cost Software Radio for Experimental Analysis of LTE Security, Protocol Exploits, and Location Leaks

2017 ◽  
pp. 285-308
Author(s):  
Roger Piqueras Jover
Keyword(s):  
Experimental Analysis ◽  
Low Cost ◽  
Software Radio ◽  
Security Protocol

A Low-Cost Dead Reckoning Navigation System for an AUV Using a Robust AHRS: Design and Experimental Analysis

2018 ◽  
Vol 43 (4) ◽  
pp. 927-939 ◽  
Author(s):  
Mohammad Taghi Sabet ◽  
Hamidreza Mohammadi Daniali ◽  
Alireza Fathi ◽  
Ebrahim Alizadeh
Keyword(s):  
Experimental Analysis ◽  
Navigation System ◽  
Low Cost ◽  
Dead Reckoning

Security Estimation in Wireless Sensor Network Simulator

2016 ◽  
Vol 25 (07) ◽  
pp. 1650067 ◽  
Author(s):  
Álvaro Díaz ◽  
Javier González-Bayon ◽  
Pablo Sánchez
Keyword(s):  
Execution Time ◽  
Low Cost ◽  
Time Estimation ◽  
Embedded Software ◽  
Security Protocol ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Network Simulator ◽  
Sensitive Data ◽  
Security Levels

Sensor nodes are low-power and low-cost devices with the requirement of a long autonomous lifetime. Therefore, the nodes have to use the available power carefully and avoid expensive computations or radio transmissions. In addition, as some wireless sensor networks (WSNs) process sensitive data, selecting a security protocol is vital. Cryptographic methods used in WSNs should fulfill the constraints of sensor nodes and should be evaluated for their security and power consumption. WSN engineers use several metrics to obtain estimations prior to network deployment. These metrics are usually related to power and execution time estimation. However, security is a feature that cannot be estimated and it is either “active” or “inactive”, with no possibility of introducing intermediate security levels. This lack of flexibility is a disadvantage in real deployments where different operation modes with different security and power specifications are often needed. This paper proposes including a new security estimation metric in a previously proposed framework for WSN simulation and embedded software (SW) performance analysis. This metric is called Security Estimation Metric (SEM) and it provides information about the security encryption used in WSN transmissions. Results show that the metric improves flexibility, granularity and execution time compared to other cryptographic tests.

scholarly journals Green Exfoliation of Graphite Flakes to Efficiently Synthesize Biographene

2019 ◽  
Author(s):  
Noelia Losada-Garcia ◽  
Angel Berenguer-Murcia ◽  
Diego Cazorla-Amorós ◽  
Jose M Palomo
Keyword(s):  
Graphene Oxide ◽  
Experimental Analysis ◽  
Low Cost ◽  
Bilayer Graphene ◽  
Thermomyces Lanuginosus ◽  
Graphene Sheets ◽  
Hydrophobic Surfaces ◽  
Layer Graphene ◽  
Mechanism Of Interaction ◽  
Few Layer Graphene

<p>A new simple, rapid, and efficient methodology to produce undamaged graphene sheets from graphite flakes in water by a bio-exfoliation technology is described. The methodology consists in the application of a lipase, with a very exclusive mechanism of interaction with hydrophobic surfaces, combined with a previous mechanical sonication, to selectively generate biographene in water. The adsorption of the lipase on the graphene sheets permits to keep the sheets separated in comparison with other methods. It is possible to obtain more than 80% of graphene (in the form of Few Layer Graphene) from low-cost graphite and with less damage compared to commercial graphene oxide (GO) or reduced GO. Experimental analysis demonstrated the formation of bilayer graphene mainly using lipase from Thermomyces lanuginosus (TLL).</p>

scholarly journals A Sub-6 GHz Vital Signs Sensor Using Software Defined Radios

2020 ◽  
Vol 2 (1) ◽  
pp. 38
Author(s):  
Onur Toker ◽  
Rawa Adla
Keyword(s):  
Phase Shift ◽  
Healthcare Workers ◽  
Low Cost ◽  
Vital Signs ◽  
Low Frequency ◽  
Software Radio ◽  
Distance Measurements ◽  
Fmcw Radar ◽  
Rf Components ◽  
Low Frequency Oscillations

Recently, there has been high demand for contactless devices for monitoring vital signs, therefore developing a low-cost contactless breathing sensor would have a great benefit for many patients and healthcare workers. In this paper, we propose a contactless sub-6 GHz breathing sensor with an implementation using a low-cost universal software radio peripheral (USRP) B205-mini device. A detailed performance analysis of the proposed system with different sensor algorithms is presented. The proposed system estimates the channel phase shift and detects the presence of low frequency oscillations in the estimated phase shift. Compared to 24 or 77 GHz FMCW-radar-based systems using distance measurements, the proposed system is simpler, can be built using more economical RF components, and requires lower sampling frequencies. Another key advantage of the proposed system is that even a very narrow unused frequency band is enough for the operation of the sensor. When operated at frequencies shared by other devices, the proposed system can turn off the transmitter at randomly selected intervals to detect the presence of other transmission activities, and can then switch to a different operating frequency. We provide both Python- and Octave/MATLAB-based implementations, which are available in a public GitHub repository.

EXPERIMENTAL ANALYSIS OF A LOW COST PARABOLIC SOLAR COLLECTOR FOR CLIMATE AND HEATING APPLICATIONS

2020 ◽  
Author(s):  
Mauro Alves das Neves Filho ◽  
Álvaro Augusto Soares Lima ◽  
Carlos Antonio Cabral Santos ◽  
Alvaro Ochoa ◽  
JOSÉ ÂNGELO PEIXOTO DA COSTA ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Solar Collector ◽  
Low Cost

Real-Time Digital Signal Processing-Based Algorithm for Universal Software Radio Peripheral to Detect GPS Signal

2019 ◽  
pp. 241-254
Author(s):  
Ehsan Sheybani
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Real Time ◽  
Communication Systems ◽  
Low Cost ◽  
Software Radio ◽  
Digital Signal ◽  
Gps Satellites ◽  
Rf Communication ◽  
Universal Software Radio Peripheral

Software-defined radios (SDR) are gradually becoming a practical option for implementing RF communication systems due to their low cost, off-the-shelf availability, and flexibility. Although the analog limitations of the hardware devices in these systems create barriers to some applications, creative algorithms in digital signal processing (DSP) can improve the results. In some cases, this improvement is essential to establishing a robust and reliable communication. The universal software radio peripheral (USRP) is a popular hardware that can be used alongside the SDR. Among many capabilities of USRP and its changeable daughter boards is receiving GPS signals. The GPS satellites transmit data on two main frequencies, L1 (1575.42 MHz) and L2 (1227.60 MHz). In this chapter, the focus is on describing a detailed implementation of the real-time DSP-based algorithm for USRP to detect GPS signal, namely the L1 band that transmits at 1575.42 MHz.

scholarly journals Efficient Production of Multi-Layer Graphene from Graphite Flakes in Water by Lipase-Graphene Sheets Conjugation

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1344
Author(s):  
Noelia Losada-Garcia ◽  
Angel Berenguer-Murcia ◽  
Diego Cazorla-Amorós ◽  
Jose Palomo
Keyword(s):  
Graphene Oxide ◽  
Experimental Analysis ◽  
Room Temperature ◽  
Low Cost ◽  
Thermomyces Lanuginosus ◽  
Graphene Sheets ◽  
Efficient Production ◽  
Layer Graphene ◽  
Mechanism Of Interaction ◽  
Unique Mechanism

Biographene was successfully produced in water from graphite flakes by a simple, rapid, and efficient methodology based on a bioexfoliation technology. The methodology consisted in the application of a lipase, with a unique mechanism of interaction with hydrophobic surfaces, combined with a previous mechanical sonication, to selectively generate lipase-graphene sheets conjugates in water at room temperature. The adsorption of the lipase on the graphene sheets permits to keep the sheets separated in comparison with other methods. It was possible to obtain more than 80% of graphene (in the form of multi-layer graphene) from low-cost graphite and with less damage compared to commercial graphene oxide (GO) or reduced GO. Experimental analysis demonstrated the formation of multi-layer graphene (MLG) mainly using lipase from Thermomyces Lanuginosus (TLL).

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