Essays about: "online communications"

Showing result 1 - 5 of 87 essays containing the words online communications.

  1. 1. Digital Front End Algorithms for Sub-Band Full Duplex

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

    Author : Midhat Rizvi; Khaled Al-Khateeb; [2023]
    Keywords : Adjacent Channel Leakage Ratio; Bit Error Rate; Clipping and Filtering; Crest Factor Reduction; Digital front end; Digital Pre-Distortion Error Vector Magnitude; Frequency Division Duplex; Power Amplifier; Peak to Average Power Ratio; Peak Cancellation Crest Factor Reduction; Sub Band Full Duplex; Self-Interference Cancellation; Signal-to-Interference Noise Ratio; Signal-to-Noise Ratio; Turbo Clipping; Time Division Duplex; Technology and Engineering;

    Abstract : Sub-band full duplex is a new communication scheme technology, where a single frequency band is partitioned into sub-bands for downlink (DL) and up-link(UL) transmissions, and both can take place simultaneously. The idea behind the sub-band full duplex development is to improve the throughput, and coverage and reduce the latency of the UL communication by allowing the UL reception during the DL transmission. READ MORE

  3. 2. Simulation and Testing of a MU-MIMO Beamforming System

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

    Author : Nazyar Mehdishishavan; Zonghan Wang; [2023]
    Keywords : Multi-User Multiple-Input Multiple-Output MU-MIMO ; Beamforming; Sounding Reference Signal SRS ; Reciprocity-based; Butler matrix; Advanced Antenna System AAS ; Technology and Engineering;

    Abstract : Multi-User Multiple-Input Multiple-Output (MU-MIMO) technology has become increasingly important in the field of wireless communication due to its ability to highly increase the capacity and efficiency of wireless networks [1]. Beamforming, as a technique used in MU-MIMO systems, improves network performance by improving signal quality and reducing interference. READ MORE

  4. 3. Cell Tower Localization using crowdsourced measurments

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

    Author : Carlos Escandón Álvarez; [2023]
    Keywords : Cell Tower Geolocation; Crowdsourced Measurements; Positioning; Machine Learning; Neural Networks;

    Abstract : This thesis explores the application of a neural network approach to cell tower localization using crowdsourced measurements. The deployment of cell tower infrastructure has been increasing exponentially in recent times as it is a crucial element of mobile communications. READ MORE

  5. 4. Procedures of investigation around online child sexual abuse : Comparison between Belgian and Swedish Police

    University essay from Högskolan i Halmstad/Akademin för informationsteknologi

    Author : Marine de Wilde d'Estmael; [2023]
    Keywords : ;

    Abstract : The primary aim of this master's thesis is to explore the differences between the methods usedby the Belgian and Swedish Police in their investigations of online child sexual abuse in orderto answer my research question “What could those specialised teams improve?” The first partof this work is theoretical and provides information on the structure of the Belgian and SwedishPolice. This will be followed by a brief discussion of the role of Europol and Interpol in thefight against child sexual abuse, as well as a short chapter on cryptography to understand howinternational communications are conducted. READ MORE

  6. 5. FPGA Implementation of an Online Free-Space Optical Communications Test-Bed

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

    Author : Hamza Mahmoud; [2023]
    Keywords : Test-bed; FPGA design; PRBS; FSO; Optical communication; Testbädd; FPGA-design; PRBS; FSO; Optisk kommunikation;

    Abstract : Free Space Optical (FSO) satellite communications is proving to be a key enabling technology for global connectivity with the ability to provide connection across Europe with only 12 ground stations. For this, Deutsches Zentrum für Luft- und Raumfahrt (DLR) is working on implementing a robust communication system for FSO on a Xilinx RFSoC Field Programmable Gate Array (FPGA)( ZU28DR). READ MORE