Sökning: "spatial multiplexing"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden spatial multiplexing.

1. 1. Space-Division-Multiplexing Platform for a Delayed-Choice Experiment

   Master-uppsats, Linköpings universitet/Informationskodning

   Författare :Hilma Karlsson; [2023]
   Nyckelord :Wheeler s delayed choice; wave-particle delayed choice; Sagnac interferometer; Mach-Zehnder interferometer; complementarity relation; spatial modes; space-division-multiplexing; LP-modes; few-mode fibers; quantum communication; quantum optics;

   Sammanfattning : This master’s thesis explores a space-division-multiplexing (SDM) platform fora delayed-choice experiment. SDM is a multiplexing technique for optical datatransmission that employs spatial modes in a multi- or few-mode fiber to increasethe transmission capacity. The spatial modes can thus be used as separate channels. LÄS MER

3. 2. Characterization and Stabilization of Transverse Spatial Modes of Light in Few-Mode Optical Fibers

   Master-uppsats, Linköpings universitet/Informationskodning

   Författare :Oscar Pihl; [2023]
   Nyckelord :spatial modes; Space division multiplexing; SDM; superpositions; LP-modes; few-mode fibers; quantum communication; quantum optics; adaptive optics; stochastic parallel gradient descent; SPGD; mode control; QKD; polarization controller; paddle controller; QRNG; quantum random number generator; spatial modes; perturbation effects;

   Sammanfattning : With the growing need for secure and high-capacity communications, innovative solutions are needed to meet the demands of tomorrow. One such innovation is to make use of the still unutilized spatial dimension of light in communications, which has promising applications in both enabling higher data traffic as well as the security protocols of the future in quantum communications. LÄS MER

4. 3. Design and Construction of a Multi-Port Beamsplitter Based on Few-Mode-Fibers

   Master-uppsats, Linköpings universitet/Informationskodning

   Författare :Daniel Spegel-Lexne; [2022]
   Nyckelord :beamsplitter; spatial modes; Space division multiplexing; superpositions; LP-modes; few-mode fibers; multi-mode interference; self-imaging; heterogeneous fiber structures; quantum communication; quantum optics;

   Sammanfattning : A MBS (Multi-port beamsplitter) for higher dimensional quantum communication has been designed and constructed and the theory and method for this is presented in this thesis. It uses optical fibers in a heterogeneous structure with a single-mode fiber spliced to a multi-mode fiber and then spliced to a few-mode fiber. LÄS MER

5. 4. Energy Efficiency of 5G Radio Access Networks

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

   Författare :Saivenkata Krishna Gowtam Peesapati; [2020]
   Nyckelord :Resource adaptation; Activity factor; Power modeling; Energy-efficiency; 5G; Q-learning;

   Sammanfattning : The roll-out of the fifth-generation (5G) wireless networks alongside existing generations and characterized by a dense deployment of base stations (BSs) to serve an ever-increasing number of users and services leads to a drastic increase in the overall network energy consumption (EC). It can lead to an unprecedented rise in operational expenditure (OPEX) for the network operators and an increased global carbon footprint. LÄS MER

7. 5. RF system for mmWave massive MIMO

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

   Författare :Ziqi Zhou; Jingwei Wang; [2018]
   Nyckelord :Technology and Engineering;

   Sammanfattning : Due to rapid developments in communication technology, it is likely that 5G networks will be rolled out in 2019. To adapt to 5G, hardware will have to develop to meet the requirements of this new technology. The mmWave communication is one of the main elements of 5G technology. LÄS MER