Sökning: "vector quantization"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden vector quantization.

  1. 1. Electromagnetic Duality in SO(3) Yang-Mills Theory : Bachelor Thesis

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Jim Lundin; [2018]
    Nyckelord :Montonen-Olive conjecture; BPS states; t Hooft-Polyakov monopole; Witten effect; SL 2; Z invariance;

    Sammanfattning : We introduce the historical context and motivation for the search for magnetic monopoles or monopole-like objects. Beginning the theoretical part we investigate the properties of groups as they relate to symmetries in physical theories. LÄS MER

  2. 2. Quantization Noise Shaping for LTE Fronthaul Downlink

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

    Författare :Alaa Mahamda; Veereswari Kalyanasundaram; [2017]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The modern mobile networks such as the Cloud Radio Network Access (C-RAN) are developing to deal with upcoming requirements in the current generation $4$\textsuperscript{th} Generation (4G) and the upcoming generation i.e. the $5$\textsuperscript{th} Generation (5G). LÄS MER

  3. 3. Implementing Linear Predictive Coding based on a statistical model for LTE fronthaul

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

    Författare :Ghassan Nakkoul; Mohammad Shohag Hassan Kaikobad; [2016]
    Nyckelord :Entropy; LTE fronthaul; RRH; BBU; C-RAN; Quantization; LTE downlink; Cyclic prefix; LPC; EVM; OFDM; Linear predicting coding; LTE; Technology and Engineering;

    Sammanfattning : This thesis studies the application of Linear Predictive coding (LPC) in the downlink of Long Term Evolution (LTE) fronthaul, which comprises of BBU and RRH. This can act as an additional module in the existing system. Today, the transmission of a single complex sample from the BBU to the RRH consumes 30 bits. LÄS MER

  4. 4. Shortening time-series power flow simulations for cost-benefit analysis of LV network operation with PV feed-in

    Master-uppsats, Uppsala universitet/Elektricitetslära

    Författare :Claudio David López; [2015]
    Nyckelord :Power flow calculation; quasi-static; time-series; vector quantization; PV generation; low voltage grids; distribution networks; computational performance; execution time;

    Sammanfattning : Time-series power flow simulations are consecutive power flow calculations on each time step of a set of load and generation profiles that represent the time horizon under which a network needs to be analyzed. These simulations are one of the fundamental tools to carry out cost-benefit analyses of grid planing and operation strategies in the presence of distributed energy resources, unfortunately, their execution time is quite substantial. LÄS MER

  5. 5. Adding temporal plasticity to a self-organizing incremental neural network using temporal activity diffusion

    Master-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Emil Lundberg; [2015]
    Nyckelord :ANN; artificial neural network; SOINN; SOTPAR; SOTPAR2; prediction; spatio-temporal pattern detection; temporal activity diffusion; pattern recognition; unsupervised learning; vector quantization; ANN; artificiellt neuralt nätverk; artificiella neurala nätverk; SOINN; SOTPAR; SOTPAR2; förutsägelse; spatio-temporal mönsterdetekion; temporal aktivitetsdiffusion; mönsterigenkänning; oövervakad inlärning; vektorkvantisering;

    Sammanfattning : Vector Quantization (VQ) is a classic optimization problem and a simple approach to pattern recognition. Applications include lossy data compression, clustering and speech and speaker recognition. LÄS MER