Essays about: "beacons"

Showing result 1 - 5 of 33 essays containing the word beacons.

  1. 1. Puzzle-based Clogging DoS-resilient Vehicular Communications

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Zhichao Zhou; [2022]
    Keywords : On-Board Units OBUs ; Denial of Service DoS ; Puzzle scheme; Hash function; Pre-authenticate; On-Board Units OBUs ; Denial of Service DoS ; Pusselsystemet; Hashfunktioner; Förautentisera;

    Abstract : In Vehicular Communication Systems (VCSs), authenticated safety beacons are used to deliver the vehicles’ status and provide necessary information for the applications. However, high rate safety beacons impose high processing overhead on the resource-constrained vehicular On-Board Units (OBUs). READ MORE

  3. 2. High-Redshift Gamma-ray Bursts as seen by SVOM/ECLAIRs

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Miguel Llamas Lanza; [2021]
    Keywords : Gamma-ray Bursts; GRBs; compact objects; high energy; ECLAIRs; SVOM; high redshift; T90; detection biases;

    Abstract : Gamma Ray Burst (GRB) are very bright cosmological explosions signalling the catastrophic formation of a black hole. Therefore, they act like real light beacons that could be detected through-out the Universe and be used as probes to study the contents and phases of the early Universe. However, only a handful sample is known so far. READ MORE

  4. 3. Learned Multi-Sensor Indoor Positioning of Mobile Devices

    University essay from Lunds universitet/Matematik LTH

    Author : Christoffer Kjellson; [2021]
    Keywords : Indoor Positioning; Deep Learning; Fingerprinting; RSSI; Machine Learning; Pedestrian Dead Reckoning; Kaggle; Sensor Fusion; SDAE; LSTM; Technology and Engineering; Mathematics and Statistics;

    Abstract : Attenuation of the microwave signal used in the Global Positioning System (GPS) due to interaction with building structures complicates the task of accurate indoor positioning. For this reason, research on alternative approaches is being performed at universities and companies worldwide. READ MORE

  5. 4. Cooperative Beacon Rate Adaptation for Vehicular Ad-hoc Network

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Jinru Li; [2021]
    Keywords : ;

    Abstract : In Vehicular Ad-hoc Networks (VANETs), the vehicles need to periodically exchange current mobility status information with neighboring vehicles through beacon messages. The mobility status includes, among others, speed, position, and direction of the vehicle, which help vehicles to keep awareness of neighboring vehicles for better traffic efficiency and safety. READ MORE

  6. 5. Indoor Positioning and Machine Learning Algorithms

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Raavi Uttarwar; Julián Valentín; [2021]
    Keywords : Indoor Positioning; Machine Learning; Bluetooth Low Energy; Technology and Engineering;

    Abstract : This master thesis focuses around improving the efficiency and accuracy of existing indoor positioning systems with the help of Machine Learning (ML). Our work is based on Bluetooth Low Energy (BLE) v5.1. Position estimation is currently being carried out using the Least-Squares (LS) method in the framework. READ MORE