Sökning: "Fädning"
Visar resultat 1 - 5 av 7 uppsatser innehållade ordet Fädning.
1. Channel Estimation and Power Control Algorithms in the Presence of Channel Aging
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Power allocation algorithms that determine how much power should be allocated to pilot and data symbols play an important role in addressing the trade-off between accurate channel estimation and high high spectral efficiency for data symbols in the presence of time-varying fading channels. Dealing with this trade-off is highly non-trivial when the channel changes or ages rapidly in time. LÄS MER
2. Evaluation of Peer-to-Peer LoRa for Geolocation Usage in a Rural Environment
Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : With the increased popularity of the Internet of Things (IoT) and vehicle tracking, long range communication alternatives become essential for connecting a large number of units in a network.In areas where no coverage from existing technologies is available such as rural areas, the need for a solution presents itself. LÄS MER
3. Performance Evaluation Of Self-Backhaul For Small-Cell 5G Solutions
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och SystemSammanfattning : This thesis evaluates the possibility of using millimeter waves of frequency 28GHz for the use of wireless backhaul in small cell solutions in the coming fifth generation mobile networks. This frequency band has not been used in preceding mobile networks but is undergoing a lot of research. LÄS MER
4. Cell Acquisition and Synchronization for Unlicensed NB-IoT
Master-uppsats, Linköpings universitet/KommunikationssystemSammanfattning : Narrowband Internet-of-Things (NB-IoT) is a new wireless technology designed to support cellular networks with wide coverage for a massive number of very cheap low power user devices. Studies have been initiated for deployment of NB-IoT in unlicensed frequency bands, some of which demand the use of a frequency-hopping scheme with a short channel dwell time. LÄS MER
5. Low-PAR Precoding for Very-Large Multi-User MIMO Systems
Master-uppsats, Linköpings universitet/Kommunikationssystem; Linköpings universitet/Tekniska högskolanSammanfattning : Storskaliga fleranvändar-MIMO-system, med hundratals basstationsantenner, studeras med allt större intresse både inom akademin och industrin. En anledning är att sådana system kan betjäna flera enantennsanvändare samtidigt över samma tids-frekvens-resurs med fleranvändarförkodning. LÄS MER