GSM is still the dominant mobile technology in many countries and will remain to play a key role in the IoT growth. With the increase of attacks in wireless networks, the evaluation of security risk into GSM Networks is now a relevant topic to study. We explore the weaknesses of GSM authentication process using Software Defined Radio Technology inside a radio-isolated environment (CorteXLab) at INSA-Lyon. The study was performed using the USRP N210 platform and the OpenBTS software to implement an experimental GSM cell. Specialized applications for the Android operating system: Qualipoc and Network Signal Guru were deployed to establish the technical parameters into the GSM Network. An automatic control process for the power transmitted by the GSM cell was developed to force the connection of the mobile phone to the fake cell. We have demonstrated the feasibility to spoof a GSM cell using Man-In-The-Middle (MITM) attack. The effectiveness of the system was tested using SMS messages and IoT-GSM nodes. This study demonstrated the existence of a significant vulnerability in GSM networks during the authentication process and the potential for developing penetration test tools with SDR technologies oriented to evaluate the security risk into GSM mobile networks.
With the increasing popularity and usage of wireless technologies, it is imperative to ensure that the underlying infrastructure and policies required in the management of RF spectrum are highly responsive to this large and growing demand. Enabling access to the under-utilized spectrum such as the TV Whitespace can be a promising solution in this increasing mobile connectivity demand. In some region in the Philippines particularly in the far flung areas Internet access is still unavailable. Setting up infrastructures might be costly with Philippines being archipelagic by nature. Wireless systems making use of the TV Whitespace is also beneficial in providing connectivity to the underserved communities. Now, prior to fully rolling out wireless infrastructures based on TV Whitespace it is important to answer first this fundamental question: how much TV Whitespace is available in the Philippines? Answer to this question can be supported and justified with the research, development, and deployment of advanced hardware and software measurement tools needed for acquisition, monitoring, and analysis of spectrum usage. The collected RF spectrum data can then be used as a basis in the implementation of spectrum licensing regulations, and proper utilization of spectrum resources.
This work presents a radio frequency (RF) power data acquisition system to characterize the signal propagation in a maritime environment using the GNU Radio software. A robust and reliable wireless communication system could enable and improve various maritime activities such as providing connectivity for small and large-scale fishing vessels, backhaul link for remote communities, gateway for weather sensors, emergency warning systems, and wireless network for other maritime activities. Understanding how RF signals propagate in such environment is necessary not only to improve current wireless technologies but also to develop new solutions. Due to the harsh conditions in maritime environment, a portable RF power data acquisition system was developed. GNU Radio was used as the software development tool and to control the Ettus B200 SDR which was hosted in a Single Board Computer. Furthermore, an Inertial Measurement Unit (IMU) was interfaced to this host computer which allows the system to measure and collect RF data and antenna orientation at the same time. The system developed was tested in a controlled environment which is a semi-anechoic chamber and in an actual maritime environment. In the semi-anechoic chamber test, the effects of antenna properties were observed using the B200 as the receiver while varying different setup parameters. For the actual maritime environment testing, the RF and IMU data were collected regularly in a 24-hour period. Since the GNU Radio provides flexibility in programming the SDR, the scheduling of transmission and reception was easily incorporated in the system.
CCERA is a not-for-profit corporation dedicated to educational outreach, equipment development, and observational support for small-scale radio astronomy in secondary and post-secondary education. We operate from a rural location in eastern Ontario, Canada. Our facility includes a number of observing instruments, both in support of our own experiments, and those of our academic clients.
Our emphasis is on low-cost experiments, using low-cost hardware approaches. These approaches are ideal for smaller post-secondary institutions and high-schools. We make our software designs freely available through GitHub, and regularly publish papers and technical memos, so that others may easily reproduce our experiments. All our software makes extensive use of GNU Radio.
The SatHelper from Open Satellite Project is an all-in-one application able to decode HRIT and LRIT signals coming from NASA’s GOES Satellites in real-time.
Products from these satellites include Full Disk images with one-third of the Earth surface in multiple light spectra with a maximum resolution of 500 meters/pixel. Other products are text messages, distress communications and higher resolution/rate images of seasonal interest areas, typically used for the hurricane season.
The Open Satellite Project is an organization focused on developing and distributing Open Source Software able to demodulate, decode and process weather satellite data based on GNU Radio Implementations of DSPs.
The Breakthrough Listen Initiative was launched on July 20, 2015 at the Royal Society in London, UK with a charge to conduct the most comprehensive and sensitive search for advanced life in humanity’s history. The Breakthrough Listen observational program commenced in December 2015, currently observing with the 100-meter Green Bank Telescope (GBT) and the Parkes 64-meter radio telescope in Australia and soon the Meetkat Array in South Africa.
Conducting observations up to 10 GHz of bandwidth in the crowded radio frequency band with tens of Tb/s data rate at each site, Breakthrough Listen aims to find the rare technological signal that do not belong. To tackle such a challenge, Breakthrough Listen is developing state-of-the-art techniques in machine learning and signal processing for spectrum sensing, signal recognition and anomaly detection. Here we will give an overview of the Breakthrough Listen program with focus on techniques of data analysis.
Determining the sensitivity of a SETI detection pipeline is necessary in order to set physical limits on potentially detectable signals. The results of such an analysis can highlight limits of the chosen detection strategy and algorithms as well as possible system failures. This also enables an accurate quantification of the minimum emission power of an extraterrestrial emitter to be detected by a SETI experiment.
To that end, a software suite has been developed to generate synthetic RAW files incorporating system noise, artificial transmissions, and meta-data based on actual observation parameters to increase the realism of the synthetic data set. The artificial transmissions considered for this project are selected among pure complex sinewaves, linear chirps, transient pulses, and realistic (frequency-drifting) digital and analog modulated transmissions with channel distortions generated with the GNU Radio package.
The resulting synthetic raw data files will also serve as modulation classification training data sets.
The gr-satellites OOT module provides an open-source solution for decoding every satellite that transmits on the Amateur Radio bands. The background for this is that the ITU regulations state that communications in the Amateur Service should be non-encrypted and that everyone should be able to decode them. This also satisfies an educational goal, to be a good source of documentation for anyone interested in learning how these systems and protocols work. The gr-satellites OOT module has been in development since 2015, and tries to support every satellite which does not transmit in AFSK/FSK AX.25 (the open-source direwolf decoder already does a good job at that). Currently there is support for decoding most amateur satellites in orbit.
This poster introduces Multiple Input Multiple Output (MIMO) capability to the GNU Radio core module gr-digital. Basic encoding and decoding algorithms are implemented and bring GNU Radio users the possibility to enjoy the many benefits of MIMO. A special focus lies on the inclusion of MIMO into the existing OFDM physical layer of GNU Radio, forming a very powerful and popular combination, MIMO-OFDM.
September 17 - 21, 2018 - Henderson Convention Center, Henderson, NevadaRegister Now