Essays about: "adaptive beamforming"

Showing result 1 - 5 of 16 essays containing the words adaptive beamforming.

1. 1. Personalized Federated Learning for mmWave Beam Prediction Using Non-IID Sub-6 GHz Channels

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

   Author : Yuan Cheng; [2022]
   Keywords : Personalized Federated Learning; Millimeter wave; Beamforming; DeepMIMO; Non-IID; Personaliserad Federad Inlärning; Millimetervågor; Strålformning; DeepMIMO; Icke-IID;

   Abstract : While it is difficult for base stations to estimate the millimeter wave (mmWave) channels and find the optimal mmWave beam for user equipments (UEs) quickly, the sub-6 GHz channels which are usually easier to obtain and more robust to blockages could be used to reduce the time before initial access and enhance the reliability of mmWave communication. Considering that the channel information is collected by a massive number of radio base stations and would be sensitive to privacy and security, Federated Learning (FL) is a match for this use case. READ MORE

3. 2. The Effect of Distortions Induced by Adaptive Antenna Arrays in GNSS Applications

   University essay from Linköpings universitet/Kommunikationssystem; Linköpings universitet/Tekniska fakulteten

   Author : Emma Beskow; [2022]
   Keywords : GNSS; GPS; Jamming; Beamforming; Adaptive antenna arrays; Frequency response distortions;

   Abstract : Global Navigation Satellite Systems (GNSS) are vital tools for accurate navigation and timing for both civil and military use. Due to the low power of the GNSS signals, these systems are sensitive to interference attacks. For wideband GNSS jamming, adaptive antenna arrays are commonly used to suppress interference. READ MORE

4. 3. Adaptive Frequency Resolution for Downlink Beamforming in 5G NR

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

   Author : Johanna Bengtsson; [2021]
   Keywords : beamforming; MIMO; 5G; 5G NR; Technology and Engineering;

   Abstract : As the demand for higher data rates and lower latencies increase, together with the use of higher frequency bands, MIMO and beamforming have become an essential part of the 5G NR technology. Calculating the beamforming weights is a costly process, and reducing the frequency resolution of the weight calculations would save a significant amount of computational power. READ MORE

5. 4. Adaptive Beam Management in 5G-NR: A Machine Learning Perspective

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

   Author : Boqiang Wang; [2021]
   Keywords : Machine Learning; Neural Network; Beam Management; Beam Tracking; mmWaves; 5G NR; Beamforming; Technology and Engineering;

   Abstract : In this rapid era of technology, speed of communication has become an important factor. To overcome this challenge, 5G/NR technology is being explored. One of the ways of doing this is by using the so called millimeter wave spectrum. READ MORE

6. 5. Beamforming in 5G mm-wave radionetworks : Importance of frequency multiplexing for users in urban macro environments

   University essay from Uppsala universitet/Signaler och system

   Author : Carl Lutnaes; [2020]
   Keywords : ;

   Abstract : 5G brings a few key technological improvements compared to previous generations in telecommunications. These include, but are not limited to, greater speeds, increased capacity and lower latency. These improvements are in part due to using high band frequencies, where increased capacity is found. READ MORE