Advanced search

Showing result 1 - 5 of 15 essays matching the above criteria.

  1. 1. A Digital Phase-Locked Loop for Frequency Synthesis using an Adaptive Pulse Shrinking TDC

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

    Author : Viktor Lewin; [2023]
    Keywords : Phase-locked loop; PLL; DPLL; Frequency Synthesis; TDC; PFD; Technology and Engineering;

    Abstract : This thesis investigates a new type of Phase-Locked Loop (PLL) architecture which combines a phase/frequency detector (PFD) and a digital loop filter. The quantization is done by a time-to-digital converter which continuously shrinks the pulse coming from the PFD and registers how far it propagates. READ MORE

  3. 2. Current Control and Modelling of an Inspiration Valve

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

    Author : Astrid Lindstedt; [2021]
    Keywords : Current Servo; Cascade Control; Solenoid Model; Ventilator; Strömregulator; Kaskadreglering; Solenoid modell; Respirator;

    Abstract : An analog current servo of an intensive care ventilator is being developed at Getinge in Stockholm. The current servo is used to control the output gas flow of an inspiration valve to a patient’s lungs. The ventilator’s control system is in a cascade design of two closed-loops, of which the current servo is the controller for the inner loop. READ MORE

  4. 3. Machine Learning Enabled Nonlinear Phase Noise Mitigation for Coherent Optical Systems

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Sergio Steven Gutierrez; [2020]
    Keywords : QAM; NLIN; NLPN; Machine Learning; Coherent Optical Communication; Nonlinear Noise Compensation; Physics and Astronomy; Technology and Engineering;

    Abstract : In the current development of coherent optical communication systems, nonlinear noise is considered to be the ultimate bottleneck when extending the transmission length. In this report we suggest a nonparamter digital signal processing scheme to extend the transmission length of a fiber link. READ MORE

  5. 4. Parallelizing Digital Signal Processing for GPU

    University essay from Linköpings universitet/Programvara och system

    Author : Hannes Ekstam Ljusegren; Hannes Jonsson; [2020]
    Keywords : GPU; Signal Processing; Pulse detection; CPU; CUDA; Jetson; NVIDIA; Parallelize; Digital Processing;

    Abstract : Because of the increasing importance of signal processing in today's society, there is a need to easily experiment with new ways to process signals. Usually, fast-performing digital signal processing is done with special-purpose hardware that are difficult to develop for. GPUs pose an alternative for fast performing digital signal processing. READ MORE

  6. 5. The Implementation of the Frequency-Time Encoded Decoy-State Protocol with the Slow-Light Effect for Quantum Memories

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Author : Koray Dinçer; [2017]
    Keywords : QKD; Decoy-State; Frequency-Time; Slow-light; Quantum Repeater; Quantum Memory; Physics and Astronomy;

    Abstract : Quantum key distribution (QKD) is a secure encryption key generation process to be used by two users in the presence of an eavesdropper. The no-cloning theorem allows the sender "Alice" to securely send qubits with single photons to the receiver "Bob". READ MORE