Wireless communication technologies are expected to constitute one of the most important growth businesses in the world electronics industry during the balance of the 1990s; current market projections are on the order of 50 % per year [1]. Digital wireless communications (DWC) systems are syntheses of numerous key and supporting technologies including wireless portable telephones, cellular tele...

A high-resolution CMOS Digital-to-Time Converter for Direct-Digital-Synthesis (DDS) applications is presented in this paper. The novel architecture permits one to perform 4096 phase-interpolation levels introducing a delay proportional to a 12-bit digital control word with a resolution of about 2 ps. The virtual multiplication of the 120 MHz accumulator clock frequency by the factor 4096 is, th...

This paper presents an application of finite domain constraint programming methods to digital system synthesis problems. The modeling methods address basic synthesis problems of high-level synthesis and system-level synthesis. Based on the presented models, the synthesis algorithms are then defined. These algorithms aim to optimize digital systems with respect to cost, power consumption, and ex...

This paper presents an application of finite domain constraint logic programming methods to digital system synthesis problems. The modeling methods address basic synthesis problems of high-level synthesis and system-level synthesis. Based on the presented models, the synthesis algorithms are then defined. These algorithms aim to optimize digital systems with respect to cost, power consumption, ...

This paper presents the subject Digital Techniques for Communications (DTC). DTC is taught at the Escola Politècnica Superior de Castelldefels (EPSC), which belongs to the Polytechnic University of Catalonia (UPC). It is a compulsory subject for undergraduate electrical engineering students specialized in telecommunication systems. It covers sampling theory, efficient IQ modulation and demodula...

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...

The objectives of the study are to analyze future direct taxation digital economy in field corporate income tax. Digitalization has grown steadily, spreading all areas, especially economic sector, i.e. activity carried out by taxpayers. In this context development not only at a national level, but also European or global there is need which state responsible for taxing profits obtained through ...