The magnetic alloy loaded radio-frequency system has been installed in the KEK 12 GeV synchrotron. This system is a high field gradient radio-frequency system and is designed to operate not only as a fundamental harmonic system to increase the insufficient matching voltage, supplied by 4 conventional ferrite cavities but also as a second radiofrequency system to alleviate the space charge effec...

A software defined radio (SDR) terminal promotes programmable realizations of the physical layer functionalities. A lot of research work has been done in applying digital signal processors (DSP) and field programmable gate arrays (FPGA) to implement the baseband functionalities of the physical layer. In this paper, the programmable solutions are extended to the radio frequency (RF) band for the...

purpose: this study aims to investigate influencial factors on accepting audio archive by radio program makers of irib in north west of  iran. methodology: this research is based on davis’ technology acceptance model which has been done via analytical survey method. the population of this research are 100 radio program makers in north west of iran who are from uramia, tabriz, ardabil, zanjan, q...

Software defined radio (SDR) is a radio in which the properties of carrier frequency, signal bandwidth, modulation, and several other characteristics are defined by software. Today's SDR is turning the hardware problems into software problems, some or all of the physical layer functions are software defined. Digital down conversion (DDC) and Digital up conversion (DUC) is one of the core techno...

The principle of software radio architecture is investigated and applied for the implementation of a multi-standard terminal (MST) for operation with both current 2nd and future 3rd generation mobile radio systems. A key strategy for the design of the transceiver is to place the analog-to-digital converter (ADC) and digital-to-analog converter (DAC) as close as possible to the antenna. In addit...

This paper explains the realization and the performance of a digital stepping correlator in a wideband radio channel measurement system. Radio channel sounding is based on the estimation of the radio channel by use of maximum length sequence (m-sequence) as an effective sounding signal. Signal is detected using the stepping correlator receiver. The received signal is not converted to the baseba...

The present paper studies the main characteristics of digital radio relays used by the largest mobile network operator (MNO) in Romania in order to develop a network supporting the newest technologies available on the market. The main contribution is the design of a high capacity Ethernet radio relay network in an area around Bucharest, Romania. The location was chosen on the criterion that it ...

A Software Defined Radio is a radio receiver that is reconfigurable by software. This reconfigurability leads to flexibility that can be used to offer more functionality to the user. Also, because common reconfigurable hardware can be used for very diverse radio interfaces, production and logistics can be faster and cheaper. In our Software Defined Radio project we aim at a receiver that is abl...

Telecommunication systems, with the support of digital technology had proven their efficiency in the world market. Digital processors had given rise to a new invention called Software Defined Radio which allows dynamic programming of the radio equipment i. e. A flexible architecture whose behavior is dependent on the software behind it and not only on its hardware. It reflects the convergence o...

The quadrature modulator is a fundamental radio component for worldwide digital wireless communication standards such as Global System for Mobile Communications (GSM), Digital Communications SystemsÐ1800 MHz (DCS1800), Digital European Cordless Telecommunications (DECT), American and Personal Digital Cellular (ADC/PDC), Japanese Personal Handy Phone (PHP RCR28). A typical system application and...