Sökning: "RF sampling"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden RF sampling.

1. 1. Nowcasting U.S. inflation using mixed frequency real-time data

   Master-uppsats, Lunds universitet/Matematisk statistik

   Författare :Gustaf Lundgren; Nils Wicktor; [2023]
   Nyckelord :Inflation; Machine Learning; Nowcasting; MIDAS; Almon distributed lag models; Real-Time data; Random Forest; XGBoost; Mathematics and Statistics;

   Sammanfattning : Different models were developed with the aim of nowcasting inflation at a daily basis with high frequency variables, while using real-time data to avoid look ahead bias. Both popular machine learning models such as Random Forest and XGBoost, and more traditional models such as UMIDAS and Almon distributed lag models were used to make the nowcasts. LÄS MER

3. 2. Characterisation and Modeling of RF environment

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

   Författare :Patric Beas Petersson; [2022]
   Nyckelord :signal processing; passive radar; antenna array; data processing; signalbehandling; passiv radar; antennarray; databehandling;

   Sammanfattning : Devices that transmit and receive electromagnetic signals are today central to the way people communicate and acquire information from the surroundings. WiDAR, Wideband Digital Array Receiver, is the name of a new system of digital antenna array receivers, which has recently been developed at Saab in Järfälla and is the focus of this thesis. LÄS MER

4. 3. Training Machine Learning-based QSAR models with Conformal Prediction on Experimental Data from DNA-Encoded Chemical Libraries

   Master-uppsats, Uppsala universitet/Institutionen för farmaceutisk biovetenskap

   Författare :Gökçe Geylan; [2021]
   Nyckelord :Machine Learning; DNA-Encoded Chemical Library; Support Vector Machine; Random Forest; Conformal Prediction; QSAR;

   Sammanfattning : DNA-encoded chemical libraries (DEL) allows an exhaustive chemical space sampling with a large-scale data consisting of compounds produced through combinatorial synthesis. This novel technology was utilized in the early drug discovery stages for robust hit identification and lead optimization. LÄS MER

5. 4. Design of a 16 GSps RF Sampling Resistive DAC with on-chip Voltage Regulator

   Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System

   Författare :Pontus Thomsson; Cyrus Seyed Aghamiri; [2021]
   Nyckelord :DAC; LDO; RDAC; 16GSps; 12-bit; Digital-to-Analog Converter; Low-Dropout Regulator;

   Sammanfattning : Wireless communication technologies continue to evolve to meet the demand for increased data throughput. To achieve higher data throughput one approach is to increase the bandwidth. One problem related to very large bandwidths is the implementation of digital-to-analog converters with sampling rates roughly in the 5 to 20 GHz range. LÄS MER

7. 5. Short Range Millimeter-Wave Inverse Synthetic Aperture Radar Imaging

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

   Författare :Oscar Gylling; Rickard Ståhl; [2018]
   Nyckelord :radar; inverse; synthetic; aperture; imaging; SAR; ISAR; gridding; backprojection; image; electromagnetic; wave; field; short; range; high; frequency; RF; millimeter; resolution; fourier; transform; spatial; domain; k-space; Technology and Engineering;

   Sammanfattning : Millimeter-wave radar imaging has potential uses in applications such as material analysis and medical in-vivo scanning of tissue. This thesis is about measuring objects using a millimeter wave radar, implement radar imaging algorithms and evaluate the resulting images. LÄS MER