Sökning: "Power Spectrum"

Visar resultat 6 - 10 av 301 uppsatser innehållade orden Power Spectrum.

1. 6. Digital Front End Algorithms for Sub-Band Full Duplex

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

   Författare :Midhat Rizvi; Khaled Al-Khateeb; [2023]
   Nyckelord :Adjacent Channel Leakage Ratio; Bit Error Rate; Clipping and Filtering; Crest Factor Reduction; Digital front end; Digital Pre-Distortion Error Vector Magnitude; Frequency Division Duplex; Power Amplifier; Peak to Average Power Ratio; Peak Cancellation Crest Factor Reduction; Sub Band Full Duplex; Self-Interference Cancellation; Signal-to-Interference Noise Ratio; Signal-to-Noise Ratio; Turbo Clipping; Time Division Duplex; Technology and Engineering;

   Sammanfattning : Sub-band full duplex is a new communication scheme technology, where a single frequency band is partitioned into sub-bands for downlink (DL) and up-link(UL) transmissions, and both can take place simultaneously. The idea behind the sub-band full duplex development is to improve the throughput, and coverage and reduce the latency of the UL communication by allowing the UL reception during the DL transmission. LÄS MER

3. 7. Warm dark matter simulations and 21cm astronomy

   Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

   Författare :Melker Marminge; [2023]
   Nyckelord :Warm Dark Matter; N-body Simulation; Power Spectrum; Neutral Hydrogen; Cosmology;

   Sammanfattning : The recent boom in 21cm astronomy has piqued the interest of many, especially cosmologists realizing its applications in their field. This study aims to determine if 21cm astronomy is a good tool for testing the validity of keV WDM models, as well as creating a code capable of simulating keV WDM models from an existing CDM code. LÄS MER

4. 8. Antenna Arrays for Dual-Frequency Harmonic Radar Application

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

   Författare :Venkatesh Raja; Mohammad Zafar Mohammad; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : The aim of this thesis is to design two patch antenna arrays for dual-frequency harmonic radar application, one for the transmitter and the other for the receiver. The arrays are used to track the Bogong moth that migrates from the countryside to the Australian Alps during spring. LÄS MER

5. 9. mmWave Coverage Extension Using Reconfigurable Intelligent Surfaces in Indoor Dense Spaces

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

   Författare :Zhenyu Li; [2023]
   Nyckelord :mmWave Communication; Reconfigurable Intelligent Surface; Ray Tracing; Indoor Dense Spaces;

   Sammanfattning : Millimeter-wave (mmWave) is widely investigated for indoor communication scenarios thanks to the available rich spectrum. However, the shortened antenna size and the high frequency make mmWave extra sensitive to blockages. LÄS MER

7. 10. How union members’ position in the wage distribution affects income inequality in Germany : An empirical analysis of data from the German Socio-Economic Panel

   Master-uppsats, Stockholms universitet/Institutionen för ekonomisk historia och internationella relationer

   Författare :Philipp Schönfeld; [2023]
   Nyckelord :Income inequality; Unions; Redistributive Preferences; Power Resource Theory; GSOEP;

   Sammanfattning : This thesis investigates the effect of union members’ position in the wage distribution on income inequality in Germany between 1998 and 2019. Specifically, data from the German Socio-Economic Panel are analyzed on two levels. LÄS MER