Hands-on software defined radio experiments with the low-cost RTL-SDR dongle

Wickert, M.A.; Lovejoy, McKenna R.

doi:10.1109/dsp-spe.2015.7369529

Cited by 11 publications

(2 citation statements)

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“…Recently, there has been considerable interest in incorporating SDRs into undergraduate electrical engineering education as a means to introduce the mathematically abstract subject of communications engineering …”

Section: Related Workmentioning

confidence: 99%

Dynamic wireless spectrum access using GNU Radio and software‐defined radios

Regula

Gilbert

Sheikh

2019

Int J Communication

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This paper presents the design, implementation, and results from a dynamic wireless spectrum access system built using GNU Radio and software-defined radios (SDRs) as part of an undergraduate senior design project. The project involved designing and implementing a dynamic wireless spectrum access system in which the secondary user (SU) learns the unknown transmission behavior (channel occupancy and time slots) of the primary user (PU) and then opportunistically transmits during time slots and using channels when they are not being used by the PUs. The main design objective was to maximize the throughput of the SU while minimizing the interference to the PU. A transmitted signal energy detection algorithm with an adaptive threshold was employed to set the channel states as occupied or not occupied. Channel state information was used to determine the PU behavior in a deterministic manner such that the unused time slots and channels could be exploited. A channel allocation scheme for the SU is proposed using the PU channel occupancy information to calculate the channel(s) and time slots available to the SU at any given time. Simulation and physical testing of the system validate the proposed algorithms. Students' feedback affirms GNU Radio and SDRs to be an effective platform for introducing abstract mathematical communications theory concepts, such as cognitive radios and dynamic spectrum allocation, in a hands-on manner.

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Section: Related Workmentioning

confidence: 99%

Dynamic wireless spectrum access using GNU Radio and software‐defined radios

Regula

Gilbert

Sheikh

2019

Int J Communication

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“…1, March 2021: 114 -129 116 transmission and reception of signals due to its low cost in comparison to the USRP. In [18], the evaluation of the low-cost RTL-SDR dongle is done through GNU-Radio and SDR. Coding of digital signal processing (DSP) algorithms is studied to process radio signals coming from any type of device over the frequency range of 57 kHz to 92.9 Mhz.…”

Section: Introductionmentioning

confidence: 99%

Vulnerability analysis in RF locking systems of vehicles in Bogotá, Colombia.

Quintero¹,

Cuesta²,

Sarmiento³

2021

IJEEI

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A car electronic security system aims to prevent its theft, the theft of its parts or of elements in its interior. Studying these systems allows identifying and mitigating vulnerabilities. Nowadays, there are different types of attacks on these systems to exploit their vulnerabilities, such as replay, relay, brute-force or jamming attacks, among others. In the last five years in Bogotá, Colombia, the average number of stolen vehicles was 3,073 per year. This research project proposes the detection of vulnerabilities in the security system of vehicles in this city. A sample of 43 vehicles of different brands sold and registered in the city is taken. The replay attack was executed, as well as a modification of the brute-force attack. Results show that most of the implemented security systems in Bogotá are susceptible of being successfully attacked through the proposed methods. The analysis done on the brute-force attack highlights a considerable reduction in time for unlocking the vehicle compared to the conventional attack in more vulnerable RKE systems. Replay attacks turn successful in great part of the sample and, furthermore, it is concluded that the unlocking key code can be generated from the locking one.

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