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This paper presents a new transceiver for impulse radio ultra-wideband (IR-UWB) systems. This work is related to CHIST-ERA SMARTER project (Smart Multifunctional Architecture and Technology for Energy aware wireless sensoRs) which address autonomous wireless sensors nodes. The ultra low-power transceiver consists of an on-off keying (OOK) modulator/demodulator and a pulse generator. To reduce power...
During the last few years, there has been a rise in the use of nanosatellites because they offer a low cost and short development time alternative to larger satellites intended for long-duration missions. The use of commercial components (COTS) instead of the expensive space-grade components required for long missions is one of the main reasons of the popularity of the nanosatellites. This paper presents...
This paper describes and verifies a method of implementing bit error rate (BER) calculation for FPGA-based physical layer security techniques for Software Defined Radio (SDR). Specifically, we describe an independent source signal processing architecture for an efficient calculation of BER for wireless communication modules across the transmitter and receiver nodes. The source components at the transmitter...
Efficient and robust wireless video delivery is an enabling technology for various applications. The existing wireless video transmission scheme has the cliff effect and it cann't gracefully adapt to channel variations. In this paper, we introduce a pseudo-analog wireless video transmission improvements and design in the hardware. Comparing with the traditional transmission, the linear processing...
The data transmission is fairly quick and easy in recent years. Nowadays, there are many serial data transmission methods, such as I2C, SPI, RS-232, USB (Universal Serial Bus), and so on. Recently, USB not only works with convenience but also transmits data fast. It becomes a standard peripheral interface between FPGA development board and personal computer (PC). To satisfy those requirements, the...
This paper describes circuit techniques for high speed transceivers used in FPGA applications. Three architectures in 16nm FinFET encompassing NRZ and PAM4 modulation are discussed. First, a 0.5–32.75Gb/s flexible reach NRZ transceiver achieves BER <10−15 over 30dB loss backplane at 32.75Gb/s while consuming 577mW. It features 3 stages of CTLE including a gain segmented AGC, 15 tap DFE, 2 LC PLLs...
QR codes, intended for maximum accessibility are widely in use these days and can be scanned readily by mobile phones. Their ease of accessibility makes them vulnerable to attacks and tampering. Certain scenarios require a QR code to be accessed by a group of users only. This is done by making the QR code cryptographically secure with the help of a password (key) for encryption and decryption. Symmetric...
Orthogonal frequency division multiplexing (OFDM) based on the use of discrete fractional Fourier transform (DFrFT) has recently gained interest due to its lower sensitivity to synchronization errors in comparison with conventional OFDM based on the use of the discrete Fourier transform (DFT). Although this higher robustness to synchronization errors is a well-recognized fact, only few works are available...
GPS receivers constitute a topic of great importance since they have application in many fields of science and industry as geodesy, aviation, security and defense to name a few. The understanding of their internals, including the nature of the signals and the algorithms involved in their processing are crucial in the development of software defined receivers, which are the most common GPS receivers...
In-house technology for digital beam position measurement is being developed for Indus-2 Synchrotron radiation source. FPGA based digital processing electronics is being designed to acquire the signal from 4-electrode BPM device using 4-channel ADC. These ADC will be calibrated by the spectrum analysis of the input signal. In this paper, High Speed Printed Circuit Board [PCB] will be designed using...
The report explores the basic principles of organization of energy-secret radio channels in the system of information interaction between unmanned aerial vehicles (UAV) and ground control station (GCS). A large amount of video, photo, telemetry is transmitted along the line of the UAV-GCS and command of control of the aircraft and its payload are transmitted along the line of the GCS-UAV. The basis...
In this paper, a positioning system is designed based on the visible light communication (VLC) technology for the tracking of mobile target in the indoor environment. The practical received signal strength (RSS) can be measured for subsequent positioning algorithm by using the designed system. Based on the practical measurements, an empirical equation is proposed to estimate the target's distances...
The IEEE 802.22 system was standardized in 2011 as a fixed wireless communication system for regional area networks using TV white-spaces (TVWS). Due to its wide coverage area of 10–30 km, the IEEE 802.22 system is expected as a backbone wireless network system in developing countries as well as a public safety broadband communication system even in leading countries. This wide coverage enables a...
This paper describes the design and implementation of an End-to-End digital wireless communication system (E2E) system on the Zynq-7000 Field Programmable Gate Array (FPGA) and Evaluation Development (Zed) Board with an Analog Devices AD9364 Wideband Transceiver from a model-based design system. Furthermore, the paper presents the design path to reconfigure the software controlled logic blocks for...
Address-Event-Representation (AER) is a widely extended asynchronous technique for interchanging “neural spikes” among different hardware elements in Neuromorphic Systems. Conventional AER links use parallel physical wires together with a pair of handshaking signals (Request and Acknowledge). Here we present a fully serial implementation using bidirectional SATA connectors with a pair of LVDS (low...
Beidou and GPS are an important part of the GNSS (Global Navigation Satellite System). Beidou is a global satellite navigation system that is independent development and operation in China. GPS is the most mature development system in the world currently. The research on the Beidou/GPS multi-mode receiver has an important practical significance at present. Compared with hardware receiver, software...
This paper presents optimizations for spectrogram matrix and signal detection processes which are used for signal sensing in software defined radio (SDR) applications. In industrial and literature applications, the software defined radio or software based receivers include field programmable gate array (FPGA) and digital signal processors (DSP) units for real time signal processing steps. In this...
In this paper, FGPA implementations of amplitude and phase comparison direction finding methods are presented. In amplitude comparison direction finding (AC-DF), the power ratio between the receiver channels is compared with the values in the look-up-table that is generated using antenna patterns. In phase comprison direction finding (FC-DF), basically the phase difference is extracted between channels...
Link Training and Status State Machine (LTSSM) is a state machine in Universal Serial Bus (USB) which is defined for link connectivity and the link power management. LTSSM consists of 12 distinct states which are characterized depending on their functionalities. This paper reveals the FPGA implementation of LTSSM providing with USB 3.1 specifications with a support of USB 3.0 and 2.0 specifications...
This paper describes the design and implementation of a simple chaotic communication system on FPGA using Rössler's chaotic system of equations. The system was simulated to insure proper operation, before being implemented on hardware using VHDL. Throughput of 2850 Mbps was obtained. The implementation results on Xilinx Zynq-7000 series FPGA show the feasibility of using digital hardware to implement...
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