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In this paper we present a proof-of-concept for an hydro acoustic fish-tag position estimation and tracking system. In our field-tested concept, a formation of Unmanned Surface Vehicles (USV) creates a mobile array of low-cost hydro acoustic fish-tag receivers. The array of receivers is able to estimate fish-tag locations and follow the fish on open waters, significantly increasing capabilities as...
Based on a workshop developed at INICTEL-UNI, this paper presents the methodology and considerations taken to improve the experiences in communication laboratory sessions in Peruvian universities with Software Defined Radio platforms, using a HackRF-One for transmission and a RTL-SDR for reception together with GNUradio Companion, an open source software. The use of these tools allows real communications...
The paper deals with a conception and implementation of selected parts of laboratory experimental receiver for processing Aeronautical VDL2 data link (VHF Data Link mode 2) messages. For acquiring of digitized signal a software defined RTL-SDR receiver is used. Program MATLAB is used for further signal processing. Implementation of message detection, signal filtration, demodulation, symbol and bit...
We present a real-time TDOA localization testbed utilizing software defined radio and GPS based synchronization. A distributed software stack enables the localization of unknown signals by transporting the recorded baseband samples of several sensors over a backhaul network for centralized signal processing in a fusion center. To overcome the relatively large drifts of synchronization signals provided...
Industry 4.0 (I4.0) closed-loop control applications require ultra low-latency and ultra high reliability. Generalized Frequency Division Multiplexing (GFDM) promises to meet these requirements in conjunction with low Out-Of-Band (OOB) emissions. We present latency measurements of an open-source, modular, portable GFDM software implementation using the GNU Radio framework. The used implementation...
This paper described the development and implementation of a distributed spectrum monitoring and surveillance testbed for identifying and locating RF signals using the Universal Software Radio Peripheral (USRP). We use a centralized RF trace collection testbed to establish the baseline, and we focus on distributed RF trace collection. Challenges associated with synchronization is identified and candidate...
OFDM technique is the most adopted multiplexing technique offering many advantages such as high spectral efficiency, noise, inter-symbol interference and multipath robustness. These have made OFDM a first-choice technique in the majority of today's wireless and wired communication systems. In this work, physical layer of the generic transceiver, based on OFDM, is implemented. Focus is kept on the...
We present a system utilizing off-the-shelf hardware components and a software framework, which is able to perform radio frequency localization with high accuracy in the order of a few meters. The architecture consists of highly synchronized receivers that are utilized by a distributed software defined radio stack in order to obtain synchronized multi channel reception of the target signal. This includes...
NHK has been studying broadcast-broadband synchronization as a technology for advanced integrated broadcast-broadband services. This paper proposes a system design for the synchronized multi-screen presentation of video streams from broadcast and broadband that are displayed on a TV and a mobile device respectively. The system uses the synchronization function defined in the Hybridcast v2.0 specifications...
In this study, real-time software defined radio implementation of the point to point multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system using pre-fast Fourier transform (pre-FFT) beamforming technique in both the transmitter and the receiver is done for the first time in the literature. By taking benefit of the MIMO system's spatial multiplexing property,...
The receiver system is an important part of FAST (Five-hundred-meter Aperture Spherical Radio Telescope) and plays a key role in determining the performance of the telescope. The receiver design requires synchronization among the digital instruments and accurate timestamp, because time synchronization of astronomical data before and after it is recorded and processed is of vital importance for the...
Software defined radio is increasingly important due to its flexibility to integrate a variety of communication standards and efficiency to develop or verify system architectures and algorithms. Here we provide a general platform with hardware acceleration IPs in FPGA to speed up the routine computing jobs like filters or FFT. Meanwhile, different frequency bands need different RF modules in the past,...
Software Defined Radio (SDR) is now becoming a ubiquitous concept to describe and implement Physical Layers (PHYs) of wireless systems. Moreover, even though the FPGA is expected to play a key role in SDR, describing a PHY at the Register-Transfer-Level (RTL) requires tremendous efforts. This paper introduces a novel methodology to rapidly implement PHYs for SDR. The work relies upon High-Level Synthesis...
LTE is expected to substitute GSM as the basis technology for railway communications. Recently, special attention has been deserved to HST as this particular environment (mainly due to the high speed condition) can severely impact wireless systems performance. Although several channel models have been derived during the few last years, most of them are not accurate enough as they are not supported...
There exist large number of professional IEEE 1588 compatible components on the embedded system market from various suppliers. However, it is an open question if it is possible to build sub 1 microsecond precision, low cost IEEE 1588v2 compatible master clock and client solution using commercial off-the shelf (COTS) components, like standard x86 architecture PCs, regular network interface cards, and...
Although the Controller Area Network (CAN) technology is very mature, the behavior of real CAN controllers under marginal operating conditions is still of practical interest as CAN is being deployed in a variety of application domains. In this paper, we propose a test software architecture able to extensively investigate the reaction of a typical CAN controller when subject to various kinds of error...
Software defined radio (SDR) is a technology that allows a single terminal to support various kinds of wireless systems by changing its software to reconfigure the wireless terminal. As a software defined radio (SDR) receiver platform, Sora has been developed recently, which is based on a general purpose processors (GPPs). In the SDR receiver, timing synchronization of OFDM signal consumes a significant...
The IEC 61499 standard defines a generic architecture for designing distributed industrial control systems based on function blocks. The standard, however, lacks a formal model of computation to describe the behavior of function block compositions. While various models have been prescribed in the literature to define the composite behavior on a single computational node, few have been proposed to...
This paper presents Glossy, a novel flooding architecture for wireless sensor networks. Glossy exploits constructive interference of IEEE 802.15.4 symbols for fast network flooding and implicit time synchronization. We derive a timing requirement to make concurrent transmissions of the same packet interfere constructively, allowing a receiver to decode the packet even in the absence of capture effects...
This paper describes the design and implementation of a prototype GPS receiver for space applications using a radiation tolerant microprocessor. The special characteristics of space environment were considered during design. All the modules necessary for basic functionality were implemented: signal acquisition, synchronization, tracking, ephemeris decodification, and navigation solution calculation...
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