Sökning: "impulse radio"

Visar resultat 16 - 20 av 23 avhandlingar innehållade orden impulse radio.

  1. 16. The Zipper duplex method in very high-speed digital subscriber lines

    Författare :Frank Sjöberg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

    Sammanfattning : This thesis deals with different aspects of digital subscriber lines (DSL). Over the years several DSL techniques for high-speed communication on the telephone access network have evolved that gradually have allowed higher data rates. LÄS MER

  3. 17. Time-Domain Antenna and Scattering Analysis for Micro- and Millimeter-Wave Applications

    Författare :Iman Vakili; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Telecommunications industries are investing tremendously to meet the ever-increasing demands for higher data rates and capacity. In particular to develop standardization for 5G, which is expected around 2020. The existing spectrum for traditional mobile networks is limited to highly occupied bands at microwave frequencies below 6 GHz. LÄS MER

  4. 18. Digitally controlled analog multiply-accumulate units

    Författare :Mattias Duppils; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This thesis is about digitally controlled analog multiplier-accumulator (MAC) units and their utilization in communications applications. These units are implemented as switched-capacitor circuits, designed with switches (MOS transistors), capacitors (MOS transistors), and amplifiers (MOS transistors); using a CMOS technology. LÄS MER

  5. 19. Ultra Wideband: Communication and Localization

    Författare :Vijaya Parampalli Yajnanarayana; Peter Händel; Andreas Springer; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ultra Wideband; TOA; Kalman Filter; Localization; Physical Layer Signaling; Location Aware Communication; Compressive Sampling; Sparse Signal Processing; Wireless Sensor Network; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The first part of this thesis develops methods for UWB communication. To meet the stringent regulatory body constraints, the physical layer signaling technique of the UWB transceiver should be optimally designed. LÄS MER

  7. 20. Plasma Enhanced Chemical- and Physical- Vapor Depositions Using Hollow Cathodes

    Författare :Kaspars Siliņš; Hana Barankova; Ladislav Bardos; Claes Nender; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hollow cathode; TiN; AlN; amorphous carbon; hybrid PVD PE-CVD; ionized magnetron;

    Sammanfattning : Development of coating deposition technologies, in terms of performance and costs, is an ongoing process. A promising class of deposition technologies are based on hollow cathode discharges. LÄS MER