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Showing result 21 - 25 of 97 essays matching the above criteria.

1. 21. M-MIMO Map Based Positioning in Wireless Networks

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

   Author : Zitong Xu; [2021]
   Keywords : Massive MIMO; Positioning; AoA; Wireless Networks; MATLAB; Massiv MIMO; Positionering; AoA; Trådlösa Nätverk; MATLAB;

   Abstract : The next generation 5G systems has attracted more and more attention to the rapid development of information and communication technology (ICT). Positioning is an important research area in 5G mobile networks, especially in M-MIMO wireless networks. READ MORE

3. 22. PLL for 5G mmWave

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

   Author : Daniel Bakic; Jinzhuo Wu; [2020]
   Keywords : PLL; 5G-NR; RFIC; beamforming; 22nm FDSOI; charge pump; vco; loop filter; frequency divider; phase detector; phase noise; jitter; Technology and Engineering;

   Abstract : This paper presents research and implementation of a high frequency Integer-N phase-locked loop for digital beamforming in mobile devices. Multiple topologies investigated whereof two were implemented. The transient phase noise of the PLL is -104dB/-95dB @1MHz. The output frequency range is from 8G-10G. READ MORE

4. 23. Implementation of a Hardware Coordinate Wise Descend Algorithm with Maximum Likelihood Estimator for Use in mMTC Activity Detection

   University essay from Linköpings universitet/Datorteknik

   Author : Mikael Henriksson; [2020]
   Keywords : ASIC; 5G; Massive MIMO; Implementation; 28-nm FD-SOI; Coordinate Descent;

   Abstract : In this work, a coordinate wise descent algorithm is implemented which serves the purpose of estimating active users in a base station/client wireless communication setup. The implemented algorithm utilizes the sporadic nature of users, which is believed to be the norm with 5G Massive MIMO and Internet of Things, meaning that only a subset of all users are active simultaneously at any given time. READ MORE

5. 24. Graph Neural Networks and Learned Approximate Message Passing Algorithms for Massive MIMO Detection

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

   Author : Andrea Scotti; [2020]
   Keywords : ;

   Abstract : Massive multiple-input and multiple-output (MIMO) is a method to improvethe performance of wireless communication systems by having a large numberof antennas at both the transmitter and the receiver. In the fifth-generation(5G) mobile communication system, Massive MIMO is a key technology toface the increasing number of mobile users and satisfy user demands. READ MORE

6. 25. A Cyber-Physical Testbed for Wireless Networked Control Systems

   University essay from Högskolan i Gävle/Avdelningen för elektroteknik, matematik och naturvetenskap

   Author : Amirhossein Hosseinzadeh Dadash; [2020]
   Keywords : cyber-physical; testbed; wireless networked control systems; MIMO; controller; LQ; MPC; Linear Quadratic Control; Model Predictive Control;

   Abstract : The cyber-physical system is the keyword of the fourth industrial revolution. The internet changed the way that humans interact with each other, and cyber-physical systems will change the way that we interact with the physical world around us. READ MORE