Sökning: "Multi-Layer Transmission"

Hittade 5 uppsatser innehållade orden Multi-Layer Transmission.

1. 1. A Study on Data-driven Methods for Selection and Evaluation of Beam Subsets in 5G NR

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

   Författare :Nic Ekman; Ilias Theodoros Skordas; [2022]
   Nyckelord :5G; NR; telecom; telecommunications; ML; machine learning; algorithms; beam; widebeam; propagation; beamforming; subset; RAN; radio; radio environment; ericsson; Technology and Engineering;

   Sammanfattning : 5G New Radio is the next generation of mobile networks and it comes with promises of ultra-high speeds, ultra-high reliability and ultra-low latency. This has posed a challenge for the engineers entrusted with the task of finding solutions which could fulfil the specification, and as a result, some promising areas have received increased attention in recent years. LÄS MER

3. 2. Efficient Transmission over Unknown Channels

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

   Författare :Ranjitha Gubbi Suresh; [2020]
   Nyckelord :Multi-Layer Transmission; RBIR; HARQ; mixing layers; successive demodulation; Wi-Fi; Technology and Engineering;

   Sammanfattning : In recent years, digital transmission techniques have been continuously evolving by employing increasingly more advanced Modulation and Coding Scheme (MCS). However, when the wireless channel is varying rapidly, it is hard or even impossible for the transmitter to select the proper MCS. LÄS MER

4. 3. Transient Voltage Distribution in Bushing

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

   Författare :Md Nazmus Shakib Khan; [2020]
   Nyckelord :Coaxial cable; Overvoltage transient; Power transformer bushing; Skin effect; Koaxialkabel; överspänningsövergående; transformatorgenomföring; hudeffekt;

   Sammanfattning : An electrical bushing is one of the most important elements in a power transformer. Steep front surges such as transient impulse voltage from lightning strikes is an inevitable electromagnetic transient mostly happening in power transmission and distribution system. The bushing might lead to be degraded due to such kind of surge. LÄS MER

5. 4. Channel Reconstruction for High-Rank User Equipment

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

   Författare :Yu Zhao; [2019]
   Nyckelord :Deep learning; 5G; massive MIMO; Channel reconstruction; Telecommunication; Artificial Intelligence; Djup lärning; 5G; massiv MIMO; Kanalrekonstruktion; Telekommunikation; Artificiell intelligens;

   Sammanfattning : In a 5 Generation massive Multiple Input Multiple Output radio network, the Channel State Information is playing a central role in the algorithm design and system evaluation. However, Acquisition of Channel State Information consumes system resources (e.g. time, frequency) which in turn decrease the link utilization, i. LÄS MER

7. 5. Adaptive Beamforming for Next Generation Cellular System

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

   Författare :Sebastian Andersson; William Tidelund; [2016]
   Nyckelord :Adaptive; Beamforming; Precoding; 5G; Zero Forcing; MRT; Maximum Ratio Transmission; LTE; Wireless Communication; Technology and Engineering;

   Sammanfattning : In this work aMatlab model of a simplified LTE system has been implemented. The PUSCH and PDSCH signal chains has been used for reception and transmission of data and DM-RS symbols are used as pilots. Moreover, the model supports communication and interference between multiple users and base station antennas. LÄS MER