A Lightweight, Low-Cost, Wideband Software-Defined Radio Test Bed

2019 ◽  
Author(s):  
Nicholas Donatelli ◽  
Timothy Flynn ◽  
Michael Macari
Keyword(s):  
Software Defined Radio ◽  
Low Cost ◽  
Test Bed

scholarly journals A Low-Cost Software Defined Radio Based Cognitive Radio Test-Bed for LTE Networks

2018 ◽  
Vol 7 (3.1) ◽  
pp. 51
Author(s):  
Kolluru Suresh Babu ◽  
Srikanth Vemuru
Keyword(s):  
Cognitive Radio ◽  
Software Defined Radio ◽  
Experimental Validation ◽  
Low Cost ◽  
Spectrum Management ◽  
Test Bed ◽  
Lte Networks ◽  
Lte Advanced ◽  
Integrated Software ◽  
Secondary Link

In this work, we present a low-cost implementation of a Cognitive Radio (CR) test-bed for LTE and LTE-Advanced (LTE-A) Networks. The test-bed setup is implemented using highly integrated Software Defined Radio (SDR) platforms which are well suited for wireless communication. Each transceiver can be configured to work as a primary (resp. secondary) eNodeB or a primary (resp. secondary) user in a Heterogeneous Cognitive Radio framework. In this context, we study the problem of spectrum management in an LTE based heterogeneous network and propose simple distributed algorithms which the secondary eNodeB can employ to efficiently manage the spectral opportunities that arise in such a network. Experimental validation show significant improvement in the secondary link throughput.  

scholarly journals Electro-smog monitoring using low-cost software-defined radio dongles

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Yassine Ben-Aboud ◽  
Mounir Ghogho ◽  
Sofie Pollin ◽  
Abdellatif Kobbane.
Keyword(s):  
Software Defined Radio ◽  
Low Cost

scholarly journals A Local Oscillator Phase Compensation Technique for Ultra-Wideband Stepped-Frequency Continuous Wave Radar Based on a Low-Cost Software-Defined Radio

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 780
Author(s):  
Kazunori Takahashi ◽  
Takashi Miwa
Keyword(s):  
Software Defined Radio ◽  
Initial Phase ◽  
Continuous Wave ◽  
Low Cost ◽  
Local Oscillator ◽  
The Other ◽  
Ultra Wideband ◽  
Single Frequency ◽  
Wave Radar ◽  
Stepped Frequency

The paper discusses a way to configure a stepped-frequency continuous wave (SFCW) radar using a low-cost software-defined radio (SDR). The most of high-end SDRs offer multiple transmitter (TX) and receiver (RX) channels, one of which can be used as the reference channel for compensating the initial phases of TX and RX local oscillator (LO) signals. It is same as how commercial vector network analyzers (VNAs) compensate for the LO initial phase. These SDRs can thus acquire phase-coherent in-phase and quadrature (I/Q) data without additional components and an SFCW radar can be easily configured. On the other hand, low-cost SDRs typically have only one transmitter and receiver. Therefore, the LO initial phase has to be compensated and the phases of the received I/Q signals have to be retrieved, preferably without employing an additional receiver and components to retain the system low-cost and simple. The present paper illustrates that the difference between the phases of TX and RX LO signals varies when the LO frequency is changed because of the timing of the commencement of the mixing. The paper then proposes a technique to compensate for the LO initial phases using the internal RF loopback of the transceiver chip and to reconstruct a pulse, which requires two streaming: one for the device under test (DUT) channel and the other for the internal RF loopback channel. The effect of the LO initial phase and the proposed method for the compensation are demonstrated by experiments at a single frequency and sweeping frequency, respectively. The results show that the proposed method can compensate for the LO initial phases and ultra-wideband (UWB) pulses can be reconstructed correctly from the data sampled by a low-cost SDR.

scholarly journals Low Cost Satellite Attitude Hardware Test Bed

2016 ◽  
Author(s):  
Austin Probe ◽  
Vinicius Guimaraes Goecks ◽  
John Hurtado
Keyword(s):  
Low Cost ◽  
Test Bed ◽  
Satellite Attitude ◽  
Hardware Test

scholarly journals Extending QGroundControl for Automated Mission Planning of UAVs

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2339 ◽  
Author(s):  
Cristian Ramirez-Atencia ◽  
David Camacho
Keyword(s):  
Flight Control ◽  
Low Cost ◽  
Real Life ◽  
Mission Planning ◽  
Human Computer Interface ◽  
Simulation Environment ◽  
Test Bed ◽  
Multiple Vehicles ◽  
Operator Workload ◽  
Selection Of

Unmanned Aerial Vehicles (UAVs) have become very popular in the last decade due to some advantages such as strong terrain adaptation, low cost, zero casualties, and so on. One of the most interesting advances in this field is the automation of mission planning (task allocation) and real-time replanning, which are highly useful to increase the autonomy of the vehicle and reduce the operator workload. These automated mission planning and replanning systems require a Human Computer Interface (HCI) that facilitates the visualization and selection of plans that will be executed by the vehicles. In addition, most missions should be assessed before their real-life execution. This paper extends QGroundControl, an open-source simulation environment for flight control of multiple vehicles, by adding a mission designer that permits the operator to build complex missions with tasks and other scenario items; an interface for automated mission planning and replanning, which works as a test bed for different algorithms, and a Decision Support System (DSS) that helps the operator in the selection of the plan. In this work, a complete guide of these systems and some practical use cases are provided

scholarly journals Construction of a comprehensive endovascular test bed for research and device development in mechanical thrombectomy in stroke

2020 ◽  
pp. 1-8 ◽  
Author(s):  
Adithya S. Reddy ◽  
Yang Liu ◽  
Joshua Cockrum ◽  
Daniel Gebrezgiabhier ◽  
Evan Davis ◽  
...  
Keyword(s):  
Flow Rate ◽  
Hydraulic System ◽  
Mechanical Thrombectomy ◽  
Low Cost ◽  
Quality Analysis ◽  
Test Bed ◽  
Vessel Occlusion ◽  
Physiological Flow ◽  
3D Printed ◽  
Device Interaction

OBJECTIVEThe development of new endovascular technologies and techniques for mechanical thrombectomy in stroke has greatly relied on benchtop simulators. This paper presents an affordable, versatile, and realistic benchtop simulation model for stroke.METHODSA test bed for embolic occlusion of cerebrovascular arteries and mechanical thrombectomy was developed with 3D-printed and commercially available cerebrovascular phantoms, a customized hydraulic system to generate physiological flow rate and pressure, and 2 types of embolus analogs (elastic and fragment-prone) capable of causing embolic occlusions under physiological flow.RESULTSThe test bed was highly versatile and allowed realistic, radiation-free mechanical thrombectomy for stroke due to large-vessel occlusion with rapid exchange of geometries and phantom types. Of the transparent cerebrovascular phantoms tested, the 3D-printed phantom was the easiest to manufacture, the glass model offered the best visibility of the interaction between embolus and thrombectomy device, and the flexible model most accurately mimicked the endovascular system during device navigation. None of the phantoms modeled branches smaller than 1 mm or perforating arteries, and none underwent realistic deformation or luminal collapse from device manipulation or vacuum. The hydraulic system created physiological flow rate and pressure leading to iatrogenic embolization during thrombectomy in all phantoms. Embolus analogs with known fabrication technique, structure, and tensile strength were introduced and consistently occluded the middle cerebral artery bifurcation under physiological flow, and their interaction with the device was accurately visualized.CONCLUSIONSThe test bed presented in this study is a low-cost, comprehensive, realistic, and versatile platform that enabled high-quality analysis of embolus–device interaction in multiple cerebrovascular phantoms and embolus analogs.

scholarly journals Spoofing and Jamming of GNSS Signals: Are They Real and What Can We Do About Them

2020 ◽  
Author(s):  
RW Meggs ◽  
RJ Watson
Keyword(s):  
Software Defined Radio ◽  
Low Cost ◽  
Cyber Attack ◽  
Primary Method ◽  
Application Layer ◽  
Software Application ◽  
Know How ◽  
Real World Evidence ◽  
Radio Systems ◽  
Barrier To Entry

Put simply, ‘spoofing’ is a means of controlling the reported position and time of a GNSS receiver. Spoofing has now been well demonstrated in the experimental context, but until a few years ago it was regarded as “…a bit like UFOs: much speculation, occasional alarms at suspected instances, but little real-world evidence of its existence” (Ref. 1). In the intervening years spoofing has transformed from a research laboratory into an emerging threat. In this paper we focus on radio-frequency attack as the primary method of spoofing. However there is also the possibility of cyber-attack on GNSS systems, in which there is interception and modification of computed position between the receiver and application. It had perhaps previously been considered that the technology and know-how “barrier to entry” to produce an effective spoofer was itself a significant deterrent. However, the commercial availability of inexpensive (sub £250) software defined radio systems, low-cost computing and open-source GNSS signal generator software has all but eliminated this barrier. This paper will consider various methods of spoofing, means of detecting spoofing through analysis of signal anomalies and also mitigation of spoofing at the physical layer via the antenna and signal processing and at the software application layer through the detection of anomalies.

Test bed for low-cost measurement of AM/AM and AM/PM effects in RF PAs based on FPGA

2015 ◽  
Author(s):  
J.C. Nunez-Perez ◽  
J.R. Cardenas-Valdez ◽  
C. Gontrand ◽  
R. Jauregui-Duran ◽  
J.A. Reynoso-Hernandez
Keyword(s):  
Low Cost ◽  
Test Bed ◽  
Cost Measurement

scholarly journals An Efficient Solitary Senior Citizens Care Algorithm and Application: Considering Emotional Care for Big Data Collection

Processes ◽  
2018 ◽  
Vol 6 (12) ◽  
pp. 244 ◽  
Author(s):  
Jun-Ho Huh
Keyword(s):  
Senior Citizens ◽  
Low Cost ◽  
Consumption Patterns ◽  
Test Bed ◽  
Old People ◽  
Daily Routines ◽  
Actual Application ◽  
People With Dementia ◽  
System Components ◽  
Research Studies

The issue of solitary senior citizens dying alone has become serious in advanced countries where the average lifespan of their citizens is continuously extending due to improved health care and diet. Such unattended deaths are considered to be one of the major issues pertaining to the ever-growing number of senior citizens so that many research studies have been conducted to find a solution to mitigate the situation. The framework proposed in this study allows monitoring of electric power consumption patterns of solitary senior citizens. At the same time, a test bed was constructed to estimate the performance of the framework. The results from the test bed experiment revealed that the framework was effective, flexible, and expandable for actual implementation. This framework is the product of these research studies describing individual designs and the method of implementing them for actual application. This research has confirmed that the framework for an extendable solitary senior citizens care system can be designed and implemented at low cost and the operations between system components worked smoothly while interacting flexibly. In particular, the rate of these old people dying alone in poor areas was above normal so that the proposed system would be quite meaningful to society as it helps in monitoring their safety by locating the whereabouts of those people with dementia or checking their daily routines, for example.

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