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Showing result 1 - 5 of 6 essays matching the above criteria.

1. 1. Simulation and Testing of a MU-MIMO Beamforming System

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

   Author : Nazyar Mehdishishavan; Zonghan Wang; [2023]
   Keywords : Multi-User Multiple-Input Multiple-Output MU-MIMO ; Beamforming; Sounding Reference Signal SRS ; Reciprocity-based; Butler matrix; Advanced Antenna System AAS ; Technology and Engineering;

   Abstract : Multi-User Multiple-Input Multiple-Output (MU-MIMO) technology has become increasingly important in the field of wireless communication due to its ability to highly increase the capacity and efficiency of wireless networks [1]. Beamforming, as a technique used in MU-MIMO systems, improves network performance by improving signal quality and reducing interference. READ MORE

3. 2. Non-Coherent Radio-Based Positioning

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

   Author : Farshid Rezaei; Mohamad Abou Nasa; [2019]
   Keywords : target localization and tracking; wireless sensor network WSN ; hybrid measurements; received signal strength RSS ; angle of arrival AoA ; Technology and Engineering;

   Abstract : In this thesis, a new Angle-of-Arrival (AoA) technique is used to determine the direction of a target in an outdoor environment using Radio Frequency (RF) signals. This technique estimates the AoA based on the difference between the Received Signal Strength Indicators (RSSI) from two/four directive antennas. READ MORE

4. 3. Millimeter Wave Antenna Array Calibration and Validation for 5G New Radio Access

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

   Author : Manuel Jose Lopez Morales; [2018]
   Keywords : Technology and Engineering;

   Abstract : This Master thesis work was performed in Ericsson AB, Lund. It studies and validates two classes of algorithms to be used in mm-wave massive MIMO antenna arrays, for their use in the future 5G mobile communication systems. READ MORE

5. 4. Development and implementation of an indoor positioning system with applications to smart lighting

   University essay from KTH/Maskinkonstruktion (Inst.)

   Author : ELIN MAGNUSSON; RICKARD NILSSON; [2012]
   Keywords : ;

   Abstract : Detta examensarbete behandlar ett ämne det forskats mycket på de senaste åren, positioneringinomhus. Utomhus är GPS standard men för positionering inomhus finns det än så länge ingenstandard. Syftet med lokaliseringssystemet som utvecklats i detta projekt är att lokaliserapersoner och andra föremål i rörelse i kontorsliknande miljöer. READ MORE

6. 5. Performance study of IEEE 802.16d (Fixed WiMAX) Physical layer with Adaptive Antenna System

   University essay from Blekinge Tekniska Högskola/Avdelningen för signalbehandling

   Author : Ahmer Ali Bajwa; Junaid Anwar Awan; [2008]
   Keywords : WiMAX IEEE 802.16d ; OFDM; Smart Antennas; AAS; LMS; Pre-FFT beamformer; SUI channel; Rician Fading; BER.;

   Abstract : In this thesis work, WiMAX (IEEE 802.16d) PHY layer with underlying OFDM technology and an optional feature called Adaptive Antenna System has been considered. The SUI-3 channel model (Rician fading) is used for creating fading phenomena. READ MORE