Sökning: "very large antenna array"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden very large antenna array.

1. 1. Lean Beam Management for New Radio

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

   Författare :Nawanit Kumar; [2020]
   Nyckelord :5G; NR; MIMO; Beam management; CSI-RS; Technology and Engineering;

   Sammanfattning : The use of millimetre-wave frequencies in Fifth generation New Radio has lead to high path loss due to radio propagation environment. Simultaneously, high data rates is a must for current products due to high market demand. This requirement accounts for efficient tracking of the best beam for the user equipment to stay connected to it. LÄS MER

3. 2. Assessment of weather conditions for ALMA observations of the Sun

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Daniel Jakobsson; [2020]
   Nyckelord :Atacama Large Millimeter Array; ALMA; Solar observation;

   Sammanfattning : The closest star to Earth is the Sun. The difference between our Sun and other stars is that the dynamics are observable with telescopes. A complex and strange part of our Sun is the chromosphere which is a part of the solar atmosphere. LÄS MER

4. 3. Efficient DPD Coefficient Extraction For Compensating Antenna Crosstalk And Mismatch Effects In Advanced Antenna System

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

   Författare :Himanshu Gaur; Md Zahidul Islam Shahin; [2018]
   Nyckelord :Technology and Engineering;

   Sammanfattning : The demand for high data rates in a wireless communication system has experienced a remarkable growth over the last years. This demand is continually increasing with the growing number of wirelessly connected devices. Thus, there is a continuing hunt for increasing the data transmission rate in wireless communication systems. LÄS MER

5. 4. Phased array antenna element evaluation

   Master-uppsats, Linköpings universitet/Fysik och elektroteknik; Linköpings universitet/Tekniska högskolan

   Författare :Jacob Samuelsson; [2017]
   Nyckelord :Antenna; Array; PIFA; Notch; HFSS;

   Sammanfattning : This thesis evaluates two array antenna elements for large phased array antennas. The two antenna concepts are a surface mounted notch element and a PIFA (Planar Inverted F Antenna). The antennas have been simulated at S-band in Ansys HFSS as a unit cell in an infinite array environment. LÄS MER

7. 5. Analysis of Channel Measurements Using a Very Large Antenna Array

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

   Författare :Tomas Sidabras; Mohammad Salman; [2015]
   Nyckelord :channel measurements; very large antenna array; massive MIMO; channel modeling; Technology and Engineering;

   Sammanfattning : Accurate wireless channel models are crucial to simulate the effect of radio wave propagation in a channel on wireless communication systems. By calculating physical processing effects that signal undergoes while traveling from transmitter to the receiver, channel models help to analyze performance of wireless systems. LÄS MER