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Showing 1-25 of 103,800 resultsfor "Index Terms":Radio Frequency Signal
"Index Terms":Radio Frequency Signal
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Digital signal processing in single sideband radio measurements
The point is made that increasing complexity of modern electronic systems has made the provision of automatic ten systems mandatory in medium to large scale manufacture and maintenance situations. A brief history is then given of automatic test system development leading to the conclusion that modern test systems should use computer power to replace complex test instrumentation. As an example of t...Show More
Definitions and explanations of key concepts in the fields of spectrum management, spectrum trading, cognitive radio, dynamic spectrum access, policy-based radio systems, software defined radio, and related advanced radio system technologies are provided. Beyond simple, short definitions, amplifying text explaining these terms in the context of the technologies that use them is provided. Also desc...Show More
Definitions and explanations of key concepts in the fields of spectrum management, spectrum trading, cognitive radio, dynamic spectrum access, policy-based radio systems, software defined radio, and related advanced radio system technologies are provided. Beyond simple, short definitions, amplifying text explaining these terms in the context of the technologies that use them is provided. Also desc...Show More
A Scheme on the Implement of Software Radio Based on the Frequency Converting Technique
2009 5th International Conference on Wireless Communications, Networking and Mobile Computing
Year: 2009 | Conference Paper |
Based on the superheterodyne receiving technology and software radio theory, the converter process and the frequency pushing process in the wide-scope intermediate frequency sampling and receiving structure are analysed in the view of converter technology, at the same time, a hardware realization scheme of software radio wide-scope intermediate frequency sampling receiver is put forward on the bas...Show More
Recent research has examined several novel radio frequency (RF) remote probing techniques. These new results are joined with the prior art leading to a unified understanding of RF remote probing that articulates the fundamental principles involved and allows extension to the analysis of additional “new” RF probing techniques. Two significant aspects in RF probing are emphasized: 1) information, co...Show More
USRP-based Frequency Hopping Signal Record and Playback System
2016 Sixth International Conference on Instrumentation & Measurement, Computer, Communication and Control (IMCCC)
Year: 2016 | Conference Paper |
Cited by: Papers (2)
Nowadays, most wireless devices are well suited for the fast evolving technology of Software-Defined Radios, which is a radio technology that most wireless signal processing components are implemented digitally in software. This paper presents a low cost, portable, and flexible frequency hopping signal record and playback system based on a general purpose software radio front end, the Universal Se...Show More
Digital-to-radio converter for software radio
Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137)
Year: 2000 | Conference Paper |
We have proposed a digital-to-radio (D/R) converter that can directly change a digital signal generated by a logic circuit into a radio signal. This D/R converter enables an RF circuit and an antenna to be composed of one simple device, and the radio can be directly controlled by software; this is the essence of software radio. The proposed converter is therefore applicable to an adaptive radio te...Show More
Definitions and explanations of key concepts in the fields of spectrum management, spectrum trading, cognitive radio, dynamic spectrum access, policy-based radio systems, software defined radio, and related advanced radio system technologies are provided. Beyond simple, short definitions, amplifying text explaining these terms in the context of the technologies that use them is provided. Also desc...Show More
Modulation Recognition of Radio Signals Based on Edge Computing and Convolutional Neural Network
Software defined radio (SDR) is a wireless communication technology that uses modern software to control the traditional "pure hardware circuit". It can provide an effective and secure solution to the problem of building multi-mode, multi-frequency and multifunction wireless communication equipment. Although the concept and application of SDR have been studied a lot, there is little discussion abo...Show More
Analysis of Hardware and Software Tools for Implementation of Cognitive Radio Networks
Ernazar Reypnazarov;Halimjon Khujamatov;Doston Khasanov;Zamira Allamuratova
2022 International Conference on Information Science and Communications Technologies (ICISCT)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
This paper analyzes of the hardware and software tools for implementing a cognitive radio network. In particular, software-configurable radio modules, which are considered the main element of the cognitive network, were studied according to their main characteristics, among which the widely used ones were comparatively analyzed. As a result of the analysis, the HackRF One device was selected as th...Show More
Radio Frequency System-On-Chip Design for Digital Receiver
2018 IEEE 3rd International Conference on Integrated Circuits and Microsystems (ICICM)
Year: 2018 | Conference Paper |
Cited by: Papers (1)
The design, processing and testing of a single RF system on chip (SoC) system is completed on the basis of wideband radio frequency receiving circuit, low power and highspeed high precision analog to digital converter(ADC), digital down converter(DDC), central processing unit (CPU) and other complex functional circuits. The research of a radio frequency(RF) SoC integration technology with wideband...Show More
Experimental Demonstration of the Transport of Digitized Multiple Wireless Systems Over Fiber
Prasanna A. Gamage;A. Nirmalathas;C. Lim;D. Novak;R. Waterhouse
IEEE Photonics Technology Letters
Cited by: Papers (4)
We experimentally demonstrate high-performance transmission of multiple distinct microwave signals via digitized radio-frequency (RF) transport over a 20-km standard optical fiber link. A bandpass sampling technique is used to digitize a 2.475-GHz wireless signal [worldwide interoperability for microwave access (WiMAX)] carrying 6-MSymbol/s data in 16 quadrature amplitude modulation format and a 1...Show More
A Smart Robotic Cart Prototype using RF Signal Strength
Jason Braker;Darrah Beebe;Kallistah Allen;Prasad Shastry;Md Suruz Miah
2021 IEEE International Symposium on Robotic and Sensors Environments (ROSE)
Year: 2021 | Conference Paper |
In this paper, we present a prototype of a smart robotic cart using radio frequency (RF) signal strength for navigation. The proposed robotic cart is cost-effective since it simply utilizes analog signal strengths to localize and follow a customer (called herein “remote”), for example. An array of RF modules (model of an antenna array), is mounted on top of the mobile robotic cart, and a remote RF...Show More
Research on Broadband RF Signal Transmission Structure Applied in 3D SIP
2021 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
With the increase in integration density, 3D SIP technology has become an important solution for high-density circuit integration. In the three-dimensional stacked package, the broadband radio frequency signal transmission structure will affect the performance of radio frequency signal cross-layer transmission, and has an important impact on the performance of radio frequency components. Starting ...Show More
Bandpass Sampling of One RF Signal Over Multiple RF Signals With Contiguous Spectrums
IEEE Signal Processing Letters
Cited by: Papers (11)
In this letter, we consider a case in which only one radio frequency (RF) signal is of interest over multiple RF signals with contiguous spectrums (i.e., these RF signals are adjacent to each other). The minimum valid bandpass sampling range for a desired RF signal over multiple ones is derived under the assumption of contiguous spectrums. The sampling frequency confined by the derived minimum val...Show More
A Novel Passive Optical Network Architecture Supporting Seamless Integration of RoF and OFDMA Signals
Yu-Min Lin;Po-Lung Tien;Maria C. Yuang;Steven S. W. Lee;Jason Chen;Shing-Yu Chen;Yi-Min Huang;Ju-Lin Shih;Chih-Hung Hsu
IEEE Photonics Technology Letters
Cited by: Papers (6)
In this letter, we propose a novel passive optical network (PON) architecture supporting radio-over-fiber signals and orthogonal frequency-division multiple access (OFDMA) PON signals. The architecture transports upstream multiple remote antenna's wireless signals using only one upstream wavelength. In addition, the windowed-orthogonal frequency-division-multiplexing technique is employed to mitig...Show More
Optimal Placement of Radio Frequency Energy Harvester for IoT-Based Applications
2024 IEEE 8th International Conference on Information and Communication Technology (CICT)
Year: 2024 | Conference Paper |
The Internet of Things (IoT) is redefining how we interact with our surroundings, from smart home gadgets to crucial industrial applications. The increasing deployment of IoT devices has necessitated efficient and sustainable energy solutions. Harvesting energy from radio frequency (RF) signals has developed as a sustainable way to power IoT devices by converting ambient RF signals into usable ele...Show More
Improved Photonic Technique for Broadband Radio-Frequency Measurement
IEEE Photonics Technology Letters
Cited by: Papers (67)
We propose a photonic technique for the measurement of frequency information in radar signal processing applications that has the potential to cover a frequency range of 40 GHz. This technique compares the radio-frequency power response functions generated within a low dispersion element of two complementary double sideband optical signals. The technique eliminates measurement ambiguities over the...Show More
An Affordable Software Defined Radio
Thad B. Welch;Travis Kent;Cameron H. G. Wright;Michael G. Morrow
2009 IEEE 13th Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop
Year: 2009 | Conference Paper |
Cited by: Papers (5)
This paper discusses the utilization of a relatively inexpensive wideband radio receiver in combination with a digital down-converter (DDC) based data recorder to capture and record real world radio signals. The resulting in-phase (I) and quadrature (Q) data files are then imported into MATLAB for processing. This batch processing of real world radio signals allows for a tremendous amount of class...Show More
A Radio Frequency Fingerprinting Scheme Using Learnable Signal Representation
IEEE Communications Letters
Cited by: Papers (2)
Radio frequency (RF) fingerprinting is a promising technique for device authentication due to its advantages of difficult-to-tamper and inimitableness. Rather than employing hand-crafted features, deep learning-based methods that learn low-level signal representation from raw signals have been explored recently. This letter proposes a novel RF fingerprinting scheme using learnable short-time Fouri...Show More
Review on Low Intercept Radar Signal Design Technology
2022 IEEE 4th International Conference on Power, Intelligent Computing and Systems (ICPICS)
Year: 2022 | Conference Paper |
Cited by: Papers (3)
Radar is the key equipment to obtain battlefield situation. Therefore, radar is vulnerable to electronic attack. Low intercept radar can improve the electronic defense capability of radar fundamentally and is a hotspot of radar research. One of the key research fields of RF stealth radar is signal design. First, the concept of low intercept radar is described in this paper. Then, the simple and cl...Show More
UHF RFID Systems; Their Susceptibility to Backscattered Signals Induced by Electronic Ballast Driven Fluorescent Lamps
It was demonstrated that high speed switching of electronic ballast driven fluorescent lamp (EBFL) reflects and modulates the incident UHF RFID forward link reader- tag signal in a manner similar to that of modulated reverse link backscattered tag-reader signal. Qualitative analysis of EBFL's backscattered radiation properties indicated it has a half dipole pattern similar to that of the UHF RFID ...Show More
An Experimental Study of a novel MAC protocol using UHF- RFID Passive Backscatter Modulation for Brain Computer Interface (BCI) Applications
Harshini Harikrishnan;Mahasweta Sarkar;Santosh Nagaraj;Albena Mihovska
2019 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
This paper discusses an implantable, low power, wireless, neural signal transmitter, to restore limb mobility in individuals with spinal cord injuries, as part of a Brain Computer Interface (BCI) system. Specifically, this paper describes a Brain Computer Interface (BCI) system using passive Radio Frequency Identification (RFID) transmitters operating in the Ultra High Frequency (UHF) band. This s...Show More
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