Sökning: "ofdm"

Visar resultat 1 - 5 av 121 uppsatser innehållade ordet ofdm.

  1. 1. Integrated Sensing and Communicationusing OFDM and Stepped FMCWSignals : Proof-of-Concept and Evaluation with Software DefinedRadios

    Master-uppsats, Blekinge Tekniska Högskola/Fakulteten för datavetenskaper

    Författare :Sai Chetan Poluri; Tejaswi Dunuka; [2023]
    Nyckelord :5G and 6G Communications; FMCW; GNU Radio; ISAC; OFDM; SDR; Sensing; JSAC;

    Sammanfattning : The thesis work shows the implementation of sensing and communication, so a basic knowledge of analog and digital communication systems is needed to understand this paper Background. With the increase in smart devices, the bandwidth requirements are increased, which created congestion in the radio spectrum resources. LÄS MER

  3. 2. Latency Bounds for Memory-Based FFTs with Applications in OFDM Communication

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Xiangbin Tan; Tadesse Hadush Negash; [2023]
    Nyckelord :FFT; scheduling; memory-based architecture; latency;

    Sammanfattning : Future communication systems require low latency Fast Fourier transform (FFT)computation with a small cost of area. In this study, a memory-based FFT processorwith low latency is designed. LÄS MER

  4. 3. Extension of an Existing Simulator for Cellular Communication with Support for 5G NR : Porting of MIMO Channel Estimation Methods form a prototype to an existing Link-Level Simulator

    M1-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013); Karlstads universitet/Avdelningen för datavetenskap

    Författare :Majed Haj Hussein; Abdulsalam Alnahawi; [2022]
    Nyckelord :5G NR; Channel Estimation; MIMO; OFDM; DMRS;

    Sammanfattning : Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) are two efficient technologies used to achieve higher data rate, lowlatency, robustness against fading used in 5G New Radio (NR). At the receiver end,the data arrives distorted due to disturbance during transfer over the wireless channel. LÄS MER

  5. 4. Quantum Annealing Algorithms for PAPR Minimisation in Wireless Networks

    Master-uppsats, Uppsala universitet/Materialteori

    Författare :David Bern; [2022]
    Nyckelord :Quantum Mechanics; Algorithms; Quantum Annealing; Graph representation;

    Sammanfattning : In this thesis, we devise a scheme to run PAPR minimisation with 3GPP EVM requirement as constraint on the D-Wave Systems’ quantum annealer. The PAPR minimisation is a problem central to optimising the costs and performance of wireless networks becoming increasingly difficult for larger OFDM-MIMO systems, while the EVM constraint needs to be satisfied to reach an industry standard performance. LÄS MER

  7. 5. Importance Sampling in Wireless Communication Systems with Ultra-Low Error Rates

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

    Författare :Bharat Maheshwari; Yewen Zhou; [2022]
    Nyckelord :error region; Monte Carlo; importance sampling; rejection sampling; Kullback-Leibler divergence.; Technology and Engineering;

    Sammanfattning : Simulation mimics the behaviour of real world processes or the system over time. It helps us to understand the impact of modification and the effect of introducing various interventions to a system. LÄS MER