Sökning: "Nigatu Mitiku Danna"

Hittade 2 uppsatser innehållade orden Nigatu Mitiku Danna.

  1. 1. Data Processing Algorithms in Wireless Sensor Networks får Structural Health Monitoring

    Master-uppsats, KTH/Bro- och stålbyggnad

    Författare :Nigatu Mitiku Danna; Esayas Getachew Mekonnen; [2012]
    Nyckelord :Bridge; FFT; Modal Analysis; Monitoring; Natural Frequency; Peak Picking; Structure; Wireless Sensor.;

    Sammanfattning : The gradual deterioration and failure of old buildings, bridges and other civil engineering structures invoked the need for Structural Health Monitoring (SHM) systems to develop a means to monitor the health of structures. Dozens of sensing, processing and monitoring mechanisms have been implemented and widely deployed with wired sensors. LÄS MER

  3. 2. COOPERATIVE COMMUNICATION TECHNIQUES IN WIRELESS NETWORKS (ANALYSIS WITH VARIABLE RELAY POSITIONING)

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Danna Nigatu Mitiku; Onwuli Chinedu Lawrence; [2010]
    Nyckelord :Amplify-and-Forward; Bit-Error-Rate; Cooperative Communications; Decode and Forward; Performance Analysis; Signal-to-Noise-Ratio; Wireless Networks;

    Sammanfattning : Signal transmission in Wireless Networks suffers considerably from many impairments, one of which is channel fading due to multipath propagation. Cooperative communication is a technique which could be employed to mitigate the effects of channel fading by exploiting diversity gain achieved via cooperation between nodes and relays. LÄS MER