Search for dissertations about: "Telekommunikationsteknik"

Showing result 6 - 10 of 27 swedish dissertations containing the word Telekommunikationsteknik.

  2. 6. Peak and Power Reduction in Multicarrier Communication Systems

    Author : Niklas Andgart; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikationsteknik; line driver; Signal processing; Signalbehandling; Telecommunication engineering; power reduction; DSL; DMT; tone reservation; PAR; Peak to average ratio;

    Abstract : Broadband multicarrier communication suffers from a large signal span, causing problems in both wireless and wireline systems. This is commonly referred to as a high peak to average ratio (PAR), and leads to a high power consumption, which is an important limitation in many communication systems. READ MORE

  4. 7. Virtual Mobility and Pollution Prevention - The Emerging Role of ICT Based Communication in Organisations and its Impact on Travel

    Author : Peter Arnfalk; Internationella miljöinstitutet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; pollution control; Environmental technology; travel reduction; pollution prevention; telework; web-meetings; audioconferencing; videoconferencing; virtual mobility; virtual communication; IT; IKT; ICT; Miljöteknik; kontroll av utsläpp; Informatics; systems theory; Informatik; systemteori; Telecommunication engineering; Telekommunikationsteknik;

    Abstract : Information and Communication Technologies change the way we work and communicate, enabling us to telework and to have virtual meetings - collaborating without a physical meeting. This can influence the need for commuting and business travel by provision of access to an activity without mobility - virtual mobility. READ MORE

  5. 8. CMOS Transceiver Front-Ends in Mobile Communication Handsets : Architectures and Building Blocks

    Author : Ellie Cijvat; Henrik Sjöland; Pietro Andreani; Pieternella Cijvat; Lund University; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RF CMOS; Wireless Communication; Receiver; Transmitter; Power Amplifier; Harmonic Distortion; Electrical engineering; Elektroteknik; Telecommunication engineering; Telekommunikationsteknik; Electrotechnology; Elektroteknik alt Electrical engineering; RF CMOS; Wireless Communication; Receiver; Transmitter; Power Amplifier; Harmonic Distortion; Electrical engineering; Elektroteknik; Telecommunication engineering; Telekommunikationsteknik;

    Abstract : For mobile communication systems in the low-GHz range, CMOS has increasingly become the technology of choice, and the level of integration in mobile handsets has risen. The use of off-chip components, which increases the handset assembly time and costs, is preferably avoided. READ MORE

  6. 9. Digital Hardware Aspects of Multiantenna Algorithms

    Author : Fredrik Edman; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Beamforming; MIMO; FPGA; Implementation; Hardware; Matrix; Inversion; QR-decomposition; SVD; Capon; Signal processing; Signalbehandling; Electronics; Elektronik och elektroteknik; Elektronik; Telecommunication engineering; Telekommunikationsteknik; Electronics and Electrical technology;

    Abstract : The field of wireless communication is growing rapidly, with new requirements for the next generation of mobile and wireless communications technology. In order to achieve the capacities needed for future wireless systems, the design and implementation of advanced communications techniques such as multiantenna systems is required. READ MORE

  7. 10. Aspects on Interference and Diversity in Wireless Networks

    Author : Fredrik Florén; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikationsteknik; Telecommunication engineering; Elektronik och elektroteknik; Electronics and Electrical technology; feedback; multiuser communication; diversity; throughput; packet radio networks; Interference; frequency hop communication;

    Abstract : This thesis deals with two topics in wireless communications: interference between frequency-hopping (FH) networks, and multiuser diversity. The work on FH treats a system where FH is used to provide simultaneous access to the channel for multiple uncoordinated wireless networks. READ MORE