Sökning: "Transmission Time Interval TTI"

Hittade 5 uppsatser innehållade orden Transmission Time Interval TTI.

  1. 1. ML-Aided Cross-Band Channel Prediction in MIMO Systems

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Alejo Pérez Gómez; [2022]
    Nyckelord :MIMO; Deep Learning; Machine Learning; Probabilistic Principal Component Analysis; Variational Autoencoder;

    Sammanfattning : Wireless communications technologies have experienced an exponential development during the last decades. 5G is a prominent exponent whose one of its crucial component is the Massive MIMO technology. LÄS MER

  3. 2. Scheduler Algorithms for MU-MIMO

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

    Författare :Wissam Moustafa; Richard Mugisha; [2017]
    Nyckelord :Scheduling; Beamforming; TDD; TM-8; SRS; Downlink; Round Robin; SU-MIMO; MU-MIMO.; Technology and Engineering;

    Sammanfattning : In multi-user multiple input multiple output (MU-MIMO), the complexity of the base-station scheduler has increased further compared to single-user multiple input multiple output (SU-MIMO). The scheduler must understand if several users can be spatially multiplexed in the same time-frequency resource. LÄS MER

  4. 3. Energy saving using traffic adaptive base station operation (cell DTX) in heterogeneous cellular networks

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Tukue Gebremariam Gebregergis; [2015]
    Nyckelord :;

    Sammanfattning : Nowadays, mobile broadband data traffic is growing exponentially and will continue to grow for the coming years. Accordingly, the operational cost of a mobile network will increase significantly due to the fact that a large number of base stations will be deployed to support the high traffic demand. LÄS MER

  5. 4. Rise Over Thermal Estimation Algorithm Optimization and Implementation

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Saba Irshad; Purna Chandra Nepal; [2013]
    Nyckelord :Keywords: Enhanced Uplink E-UL ; Rise-over-Thermal RoT ; Thermal noise power floor; Uplink load; scheduling;

    Sammanfattning : The uplink load for the scheduling of Enhanced-Uplink (E-UL) channels determine the achievable data rate for Wideband Code Division Multiple Access (WCDMA) systems, therefore its accurate measurement carries a prime significance. The uplink load also known as Rise-over-Thermal (RoT), which is the quotient of the Received Total Wideband Power (RTWP) and the Thermal Noise Power floor. LÄS MER

  7. 5. HSDPA System Simulation

    Magister-uppsats, Blekinge Tekniska Högskola/Avdelningen för signalbehandling

    Författare :Sohaib Khan; Nguyen Kim Cuong; [2005]
    Nyckelord :High Speed Downlink Packet Access HSDPA ; Adaptive Modulation and Coding AMC ; Packet Scheduling PS ; Hybrid Automatic Retransmit reQuest ARQ ; Node B; Radio Network Controller RNC ; High-speed Downlink Shared Channel HS-DSCH ; Transmission Time Interval TTI ; Link Adaptation;

    Sammanfattning : This thesis provides a background of the high speed downlink packet access (HSDPA) concept; a new feature which has been introduced in the Release 5 specifications of the 3GPP WCDMA/UTRA-FDD standards. In order to emphasize the theoretical analysis, a simulation of a HSDPA system shall also be performed. .. LÄS MER