Sökning: "CSMA CA"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden CSMA CA.

  1. 1. UWB-TWR performance comparison in a hybrid node network

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Oskar Sundin; [2021]
    Nyckelord :UWB; TWR; CSMA; Token ring;

    Sammanfattning : This thesis investigated the performance of a positioning system that utilised UWB technology where devices regularly shifts between acting as an initiator and as a responder for distance measurements between each other. The goal was to investigate existing positional techniques and to implement a novel network where devices initiates and responds to distance measurement exchanges. LÄS MER

  3. 2. Spektrumanalys och Dynamiska Management-system med Cisco Radio Resource Management och CleanAir

    M1-uppsats, Mälardalens högskola/Akademin för innovation, design och teknik

    Författare :Jessica Berglund; Marielle Gallardo; [2017]
    Nyckelord :;

    Sammanfattning : Interference is one of the most common causes of performance issues and reliability issues in wireless networks. Interference and background noise can be localized by performing spectrum analysis to measure amplitude and frequency characteristics of electromagnetic signals. LÄS MER

  4. 3. Fair Medium Access Control Mechanism Reducing Throughput Degradation in IEEE 802.11s Wireless Mesh Networks

    Kandidat-uppsats, Malmö högskola/Fakulteten för teknik och samhälle (TS)

    Författare :Saeed Ghasemi; Haisam El-hajj Moussa; [2016]
    Nyckelord :Multihop; IEEE 802.11s; Wifi; Medium access control; MAC; CSMA; Collision Avoidance; CA; Packet drop; Fairness; Buffer overflow; Unfairness; Mesh; Wireless; Network; WMN; throughput; throughput degradation; contention; two-hop interference; greedy sender; distributed;

    Sammanfattning : Denna rapport behandlar prestandaproblem i den nyligen standardiserade Mesh kommunikationsstandarden (IEEE 802.11s). I denna rapport, undersöker och förbättra vi ett förhållande som resulterar i reduktion av genomströmningen i en kedja av noder topologi. IEEE802. LÄS MER

  5. 4. Wireless Body Area Network for Patient Monitoring in Hospitals

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Divya Vinod Kalkotwar; [2016]
    Nyckelord :IEEE 802.15.4; wireless body area network; beacon mode; CSMA CA; NFC; patient monitoring.;

    Sammanfattning : The master thesis is a prototyping project of a wireless body area network (WBANs) for patient monitoring in hospitals. The goal of this project was to study various technologies suitable for wireless body area networks, complete a requirement analysis, design a WBAN suitable to achieve the requirements and to test and evaluate the system against the requirements. LÄS MER

  7. 5. COMPARISON OF TIME- AND EVENT-TRIGGERED STRATEGIES FOR WIRELESS COMMUNICATION IN EMBEDDED SYSTEMS : Design of a lab assignment for university level course on data communication in embedded systems

    Kandidat-uppsats, Mälardalens högskola/Inbyggda system

    Författare :Martin Andersson; Emil Sjöström; [2016]
    Nyckelord :;

    Sammanfattning : Embedded systems (ESs) and wireless technologies are in constant rapid development and therefore it is important to educate people in these subjects. This thesis work has the goal of developing a lab assignment for a university level course on data communication in embedded systems. LÄS MER