Knihobot

Robert Stacey

    OKanada
    Kosmos pocket satelliet atlas
    Satellitenbild-Weltatlas
    Next Generation Wireless LANs
    • Next Generation Wireless LANs

      802.11n and 802.11ac - Second Edition

      • 478 stránek
      • 17 hodin čtení

      If you've been searching for a way to get up to speed on IEEE 802.11n and 802.11ac WLAN standards without having to wade through the entire specification, then look no further. This comprehensive overview describes the underlying principles, implementation details and key enhancing features of 802.11n and 802.11ac. For many of these features the authors outline the motivation and history behind their adoption into the standard. A detailed discussion of key throughput, robustness, and reliability enhancing features (such as MIMO, multi-user MIMO, 40/80/160 MHz channels, transmit beamforming and packet aggregation) is given, plus clear summaries of issues surrounding legacy interoperability and coexistence. Now updated and significantly revised, this 2nd edition contains new material on 802.11ac throughput, including revised chapters on MAC and interoperability, plus new chapters on 802.11ac PHY and multi-user MIMO. An ideal reference for designers of WLAN equipment, network managers, and researchers in the field of wireless communications.

      Next Generation Wireless LANs2013
      4,5
    • Kosmos pocket satelliet atlas

      Levensechte satellietbeelden van de hele wereld

      • 160 stránek
      • 6 hodin čtení

      Het meest levensechte beeld van onze aarde, gezien door weersatellieten op 800 km hoogte. Met geavanceerde computertechnieken is zelfs de zeebodem zichtbaar gemaakt. Voor een snelle oriëntatie zijn tal van namen op de kaarten ingetekend. Een originele en vernieuwende pocket-wereldatlas!

      Kosmos pocket satelliet atlas1998
    • OKanada

      • 477 stránek
      • 17 hodin čtení

      A beautifully illustrated art catalog. Hundreds of pictures in full color and black & white. German text.

      OKanada1982