Sökning: "Multiple Antenna Techniques"

Visar resultat 1 - 5 av 37 uppsatser innehållade orden Multiple Antenna Techniques.

  1. 1. Characterization of Passive Intermodulation Distortion in MultiBand FDD Radio Systems

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

    Författare :Tomás Soares da Costa; [2019]
    Nyckelord :;

    Sammanfattning : Intermodulation distortion (IMD) is a phenomenon that results in generation of spurious distortion signals when two or more signals of different frequencies pass through a nonlinear system. In general, IMD occurs in active circuits of a radio system, however, passive wireless components such as filters, transmission lines, connectors, antennas, attenuators etc. LÄS MER

  2. 2. Beamforming Solutions for Efficient Link Setup and Link Maintenance in mmWave Communication Systems

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Hesham Sharkas; Haruhi Echigo; [2019]
    Nyckelord :5G; Beamforming; Beam-forming; Beam Management; Beam Searching; Beam Sweeping; Codebook; code-book; Initial Access; MIMO; MillimeterWave; millimeter wave; mmWave; mm-Wave; mm Wave; Precoding; Slepian Beam; Synthesizer; Beam Synthesizer; Technology and Engineering;

    Sammanfattning : Millimeter wave (mmWave band) technology has gained a lot of attention in 5G communications, due to large amounts of spectrum being available in the mmWave frequency range. However, mmWave links suffer from severe free-space loss and atmospheric absorption. LÄS MER

  3. 3. Investigate Redundancy In Sounding Reference Signal Based Channel Estimates

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Nishanth Bhavani Sankar; Akshay Thakaramkunnath Ajayakumar; [2019]
    Nyckelord :Sounding Reference Signals; Multiple Input Multiple Output; 5th Generation; Time Division Duplexing; Lossless compression; Lossy Compression; Technology and Engineering;

    Sammanfattning : 5G supports enormous increase in data rate. Massive antenna beamforming is expected to play a key role in increasing capacity in case of multi-user MIMO and coverage in case of single-user MIMO. LÄS MER

  4. 4. Vehicular Positioning Using 5G and Sensor Fusion

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

    Författare :Seyed Samie Mostafavi; [2019]
    Nyckelord :Positioning; 5G; Sensor Fusion; Beamforming; IMU; Kalman Filter;

    Sammanfattning : Recent advances in the telecommunications industry and the resulting applicationssuch as autonomous vehicles, vehicle surveillance and traffic safetyhas increased the demand for accurate and robust vehicle positioning systems.Existing Global Navigation Satellite System (GNSS) based positioning techniquesface significant performance loss in the tunnels and urban canyons. LÄS MER

  5. 5. [email protected] GHz Testbed Development and Evaluation

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

    Författare :Imran Habib; [2018]
    Nyckelord :5G; modulation; Millimeter waves; SNR; Interference; Testbed; Xilinx; FPGA; FMCOMMS5; Transceiver; Antenna; Channel Sounding; SISO; MIMO;

    Sammanfattning : Due to the advancement in technology and the increase in the amount of data beingtransferred through wireless channels, many developments in the techniques and speedof data transfer have been observed in the past few decades. The current trend incellular technology is transforming from 4G to 5G. LÄS MER