Sökning: "WWAN"

Hittade 4 uppsatser innehållade ordet WWAN.

  1. 1. Implementation of 3GPP LTE QPP Interleaver for SiLago

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Spandan Dey; [2019]
    Nyckelord :Quadratic Permutation Polynomial; QPP; interleaver; SiLago; Address Generation Unit; AGU; 3GPP; LTE; turbo codes; parallel; Quadratic Permutation Polynomial; QPP; interleaver; SiLago; Address Generation Unit; AGU; 3GPP; LTE; turbo codes; parallel;

    Sammanfattning : Modern wireless communication systems have seen an increased usage of various channel coding techniques to facilitate improved throughput and latency. Interleavers form an integral part of these coding techniques and play a critical role by making the communication more robust and resilient to noise and other interference. LÄS MER

  3. 2. Energy-efficient enhancements for IEEE 802.11 WLANs : On the way to enable Cellular/Wi-Fi networks interworking

    Master-uppsats, KTH/Radio Systems Laboratory (RS Lab)

    Författare :Fernando Valdenebro González; [2014]
    Nyckelord :energy-efficiency; WLAN; Wi-Fi; heterogeneous networks; seamless handover; network discovery; energieffektivitet; WLAN; Wi-Fi; avbrottsfri handover; nätverksidentifiering; heterogena nätverk;

    Sammanfattning : Globally, the number of mobile broadband subscriptions is growing and the amount of mobile data traffic is expected to continue to grow rapidly. In the next five years the number of smartphone subscriptions is expected to more than double, while the amount of mobile traffic per active subscription per month of these subscribers is expected to nearly quadruple. LÄS MER

  4. 3. COEXISTENCE OF WLAN AND WWAN IN A NOTEBOOK

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Emmanuel Olusegun Owolabi; Vivien Ibironke Ibiyemi; [2011]
    Nyckelord :RADIO ACCESS; INTERFERENCE; COUPLING; COEXISTENCE;

    Sammanfattning : A modern notebook can be equipped with several devices of wireless network access technologies, such as Wireless Local Area Network (WLAN), Wireles Wide Area Network (WWAN), Wireless Personal Area Network (WPAN), and radio based navigation systems, such as GNSS (Global Navigation Satellite System). Future mobile devices will have different radio technologies such as Long Term Evolution (LTE), Wideband Code Division Multiple Access (WCDMA) and WLAN transceivers co-existing on the same module that enables such a device to connect to the different radio technologies. LÄS MER

  5. 4. Optimization of Remote ServiceSolution for large installations : Wireless LAN and WAN for ABB Robotics

    Kandidat-uppsats, Akademin för innovation, design och teknik

    Författare :Håkan Stenbom; [2011]
    Nyckelord :ABB Robotics; EDGE; EGPRS; industrial Ethernet; HSDPA; HSPA; HSUPA; Wi- Fi; wireless data transfer; WAN; LAN; WWAN; WLAN; GSM; Remote Service; 3G;

    Sammanfattning : This report describes a thesis work carried out at ABB Robotics in Västerås. The objective of this thesis is to find technologies  and equipments  for wireless data transfer  suitable for the present and future needs of ABB Robotics Remote Service for large installations in industrial environments. LÄS MER