scholarly journals Software Defined Radio – A High Performance Embedded Challenge

2005 ◽  
pp. 6-26 ◽  
Author(s):  
Hyunseok Lee ◽  
Yuan Lin ◽  
Yoav Harel ◽  
Mark Woh ◽  
Scott Mahlke ◽  
...  
Keyword(s):  
Software Defined Radio ◽  
High Performance

scholarly journals SDR Based Indoor Beacon Localization Using 3D Probabilistic Multipath Exploitation and Deep Learning

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1323 ◽  
Author(s):  
Donald L. Hall ◽  
Ram M. Narayanan ◽  
David M. Jenkins
Keyword(s):  
Deep Learning ◽  
Software Defined Radio ◽  
High Performance ◽  
Nearest Neighbor ◽  
Indoor Localization ◽  
Signal Propagation ◽  
Multipath Channel ◽  
K Nearest Neighbor ◽  
Positioning Systems ◽  
Channel Characteristics

Wireless indoor positioning systems (IPS) are ever-growing as traditional global positioning systems (GPS) are ineffective due to non-line-of-sight (NLoS) signal propagation. In this paper, we present a novel approach to learning three-dimensional (3D) multipath channel characteristics in a probabilistic manner for providing high performance indoor localization of wireless beacons. The proposed system employs a single triad dipole vector sensor (TDVS) for polarization diversity, a deep learning model deemed the denoising autoencoder to extract unique fingerprints from 3D multipath channel information, and a probabilistic k-nearest-neighbor (PkNN) to exploit the 3D multipath characteristics. The proposed system is the first to exploit 3D multipath channel characteristics for indoor wireless beacon localization via vector sensing methodologies, a software defined radio (SDR) platform, and multipath channel estimation.

scholarly journals LoRa Traffic Generator Based on Software Defined Radio Technology for LoRa Modulation Orthogonality Analysis: Empirical and Experimental Evaluation

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4123 ◽  
Author(s):  
Alexandru Lavric ◽  
Adrian I. Petrariu ◽  
Eugen Coca ◽  
Valentin Popa
Keyword(s):  
Software Defined Radio ◽  
High Performance ◽  
Information Technologies ◽  
Empirical Evaluation ◽  
Performance Level ◽  
Communication Performance ◽  
Digital Revolution ◽  
Traffic Generator ◽  
Radio Technology ◽  
Development And Validation

The digital revolution has changed the way we implement and use connected devices and systems by offering Internet communication capabilities to simple objects around us. The growth of information technologies, together with the concept of the Internet of Things (IoT), exponentially amplified the connectivity capabilities of devices. Up to this moment, the Long Range (LoRa) communication technology has been regarded as the perfect candidate, created to solve the issues of the IoT concept, such as scalability and the possibility of integrating a large number of sensors. The goal of this paper is to present an analysis of the communication collisions that occur through the evaluation of performance level in various scenarios for the LoRa technology. The first part addresses an empirical evaluation and the second part presents the development and validation of a LoRa traffic generator. The findings suggest that even if the packet payload increases, the communication resistance to interferences is not drastically affected, as one may expect. These results are analyzed by using a novel Software Defined Radio (SDR) technology LoRa traffic generator, that ensures a high-performance level in terms of generating a large LoRa traffic volume. Despite the use of orthogonal variable spreading factor technique, within the same communication channel, the collisions between LoRa packets may dramatically decrease the communication performance level.

scholarly journals ADS-B Signal Verification Using a Coherent Receiver

2021 ◽  
Vol 13 (1) ◽  
pp. 4
Author(s):  
Wouter Huygen ◽  
Junzi Sun ◽  
Jacco Hoekstra
Keyword(s):  
Software Defined Radio ◽  
High Performance ◽  
Cost Effective ◽  
Direction Of Arrival ◽  
Effective Solution ◽  
Real Signal ◽  
Update Rate ◽  
Signal Injection ◽  
Coherent Receivers ◽  
Radio Transceiver

Automatic Dependent Surveillance-Broadcast (ADS-B) enables aircraft to periodically broadcast their flight states such as position and velocity. Compared to classical radar surveillance, it increases update rate and accuracy. Currently, Mode S Extended Squitter is the most common implementation for ADS-B. Due to the simplicity of Mode S design, ADS-B signals are prone to injections. This study proposes a cost-effective solution that verifies the integrity of ADS-B signals using coherent receivers. We design the verification approach by combining the signal’s direction of arrival, estimated from the multi-channel data, with the target bearing calculated from ADS-B messages. By using another high-performance software-defined radio transceiver, we also conduct real signal injection experiments to validate our approaches.

scholarly journals Design of interfaces between high speed data converters and high performance FPGAs for software defined radio applications

2019 ◽  
Vol 71 (4) ◽  
pp. 601-614 ◽  
Author(s):  
Mahadevan Balakrishnan ◽  
Khalim Amjad Meerja ◽  
Kishore Kumar Gundugonti ◽  
Sri Rama Krishna Kalva
Keyword(s):  
Software Defined Radio ◽  
High Speed ◽  
High Performance ◽  
Data Converters ◽  
High Speed Data

scholarly journals SCATTER PHY: An Open Source Physical Layer for the DARPA Spectrum Collaboration Challenge

2019 ◽  
Author(s):  
Felipe Augusto Pereira de Figueiredo ◽  
Dragoslav Stojadinovic ◽  
Prasanthi Maddala ◽  
Ruben Mennes ◽  
Irfan Jabandžic ◽  
...  
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Spectral Efficiency ◽  
Software Defined Radio ◽  
High Performance ◽  
The United States ◽  
Physical Layer ◽  
Research Projects ◽  
Physical Interfaces ◽  
Wireless Spectrum

DARPA, the Defense Advanced Research Projects Agency from the United States, has started the Spectrum Collaboration Challenge with the aim to encourage research and development of coexistence and collaboration techniques of heterogeneous networks in the same wireless spectrum bands. Team SCATTER has been participating in the challenge since its beginning, back in 2016. SCATTER’s open-source software-defined physical layer (SCATTER PHY) has been developed as a standalone application, with the ability to communicate with higher layers of SCATTER’s system via ZeroMQ, and uses USRP X310 software-defined radio devices to send and receive wireless signals. SCATTER PHY relies on USRP’s ability to schedule timed commands, uses both physical interfaces of the radio devices, utilizes the radio’s internal FPGA board to implement custom high-performance filtering blocks in order to increase its spectral efficiency as well as enable reliable usage of neighboring spectrum bands. This paper describes the design and main features of SCATTER PHY and showcases the experiments performed to verify the achieved benefits.

A Survey of High Performance Cryptography Algorithms for WiMAX Applications Using SDR

2013 ◽  
pp. 231-246 ◽  
Author(s):  
Rafidah Ahmad ◽  
Widad Ismail
Keyword(s):  
Power Consumption ◽  
High Power ◽  
Software Defined Radio ◽  
High Performance ◽  
Processing Time ◽  
Ieee 802.16 ◽  
Advanced Encryption Standard ◽  
Wireless Broadband ◽  
High Power Consumption ◽  
Design Cost

As wireless broadband technology has become very popular, the introduction of Worldwide Interoperability for Microwave Access (WiMAX) based on IEEE 802.16 standard has increased the demand for wireless broadband access in the fixed and the mobile devices. This development makes wireless security a very serious concern. Even though the Advanced Encryption Standard (AES) has been popularly used for protection in WiMAX applications, still WiMAX is exposed to various classes of wireless attack, such as interception, fabrication, modification, and reply attacks. The complexity of AES also produces high power consumption, long processing time, and large memory. Hence, an alternative cryptography algorithm that has a lower power consumption, faster and smaller memory, is studied to replace the existing AES. A Software Defined Radio (SDR) is proposed as a different way of proving the performance of the cryptography algorithm in real environments because it can be reprogrammed, which leads to design cost and time reductions.

Wireless Communication for High-Speed Passenger Rail Services: A Study on the Design and Evaluation of a Unified Architecture

2020 ◽  
Author(s):  
Subharthi Banerjee ◽  
Michael Hempel ◽  
Pejman Ghasemzadeh ◽  
Hamid Sharif ◽  
Tarek Omar
Keyword(s):  
Wireless Communication ◽  
Software Defined Radio ◽  
High Speed ◽  
High Performance ◽  
Large Scale ◽  
Field Tests ◽  
The United States ◽  
Computer Simulation Model ◽  
Passenger Cars ◽  
Ground Truth Data

Abstract High-speed trains, though prevalent in Europe and Asia, are not yet a reality in the US. But interest and industry engagement are growing, especially around commercial hubs close to commuter homes for alleviating commute times. With support from the Federal Railroad Administration in the United States, the authors are exploring the design requirements, challenges, and technology capabilities for wireless communication between passenger cars, on-board systems and with trackside infrastructure, all using next-generation radio access technologies. Key aspects of this work focus on interoperability, modularity of the architecture to facilitate a future-proof design, high-performance operations for passenger services and ultra-low latency capabilities for train control operations. This paper presents the theoretical studies and computer simulations of the proposed network architectures, as well as the results of an LTE/5G field test framework using an OpenAir-Interface (OAI)-based software-defined radio (SDR) approach. Through various test scenarios the OAI LTE/5G implementation is first evaluated in a lab environment and through field tests. These tests provide ground-truth data that can be leveraged to refine the computer simulation model for evaluating large-scale environments with high fidelity and high accuracy. Of particular focus in this evaluation are performance aspects related to delay, handover, bit error rate, frequency offset and achievable uplink/downlink throughput.

SODA: A High-Performance DSP Architecture for Software-Defined Radio

IEEE Micro ◽  
2007 ◽  
Vol 27 (1) ◽  
pp. 114-123 ◽  
Author(s):  
Yuan Lin ◽  
Hyunseok Lee ◽  
Mark Woh ◽  
Yoav Harel ◽  
Scott Mahlke ◽  
...  
Keyword(s):  
Software Defined Radio ◽  
High Performance ◽  
Dsp Architecture
Sign in / Sign up

Export Citation Format

Share Document