Sökning: "MillimeterWave"

Hittade 4 uppsatser innehållade ordet MillimeterWave.

1. 1. Hybrid Beamforming Design for Full-Duplex mmWave Relaying Systems

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

   Författare :Zhe Wu; [2020]
   Nyckelord :mmWave; full-duplex; hybrid beamforming; self-interference cancellation; OMP; fast ADMM; convergence; mmwave; fullständig duplex; hybridstrålformning; självförstörande annullering; OMP; snabb ADMM; konvergens;

   Sammanfattning : With the tremendous growth in the mobile data traffic, the demand for highdata rate is increasing rapidly, and higher frequency resources shall be exploredto alleviate the congestion in the overcrowded spectrum, thus, the millimeterwave (mmWave) frequency resource ranging from 30 GHz to 300 GHz has beenrecognized as a nature fit for the fifth-generation (5G) and beyond network. Tocompensate the severe path-loss in the mmWave band as well to realize theefficient transmissions by applying the low-cost architecture, it is of intereststo investigate the beamforming schemes with large-scale antenna arrays andthe full-duplex (FD) relaying strategy, which are indispensable in the operationof directional signal transmission and the efficient spectrum utilization inthe mmWave transmission, respectively. LÄS MER

3. 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

4. 3. Filters for 5G mmWave

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

   Författare :Alberto Monje Real; [2019]
   Nyckelord :;

   Sammanfattning : Periodic structures are an emerging eld in nowadays's microwave designs.These structures have been proven to be capable of achieving compact, ecientsolutions to problems such as leakage, or surface waves. Moreover, they haveshown interesting properties in dierent microwave related areas, such as lensantenna design, and gap-waveguide technology. LÄS MER

5. 4. Concealment Materials and Techniques for mm-Wave Advanced Antenna Systems

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

   Författare :Adhitya Bharadwaj Sriram; [2018]
   Nyckelord :AAS AdvancedAntennaSystems ; EIRP EquivalentIsotropicRadiatedPower ; mm-Wave MillimeterWave ; ConcealmentMaterials; BaseStation; AAS AdvancedAntennaSystems ; EIRP ekvivalentisotropiskutsråladeffekt ; mm-Wave Millimetervåg ; Maskeringsmaterialen; Radiobasstationer;

   Sammanfattning : With the advent of the 5G technology standard for communication, it is esti-mated that around 50 billion devices around the world will be interconnectedunder this standard [1]. This has prompted the need to investigate new ma-terials, technologies and methods to conceal antennas for preserving the aes-thetic value of urban centers, and preventing these antenna systems from beingidentified or damaged. LÄS MER