Sökning: "channel equalization"

Visar resultat 1 - 5 av 26 uppsatser innehållade orden channel equalization.

  1. 1. Undervattenskommunikation : En turboutjämnares förmåga att skatta kanalen

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Marcus Hellström; [2023]
    Nyckelord :undervattenskommunikation; turboutjämning;

    Sammanfattning : Despite advancements in wireless communication worldwide, wireless underwater communication remains a significant challenge. The marine environment presents unique and challenging conditions for wireless communication, rendering radio waves unsuitable for long-distance underwater communication due to the water's absorption of electromagnetic waves. LÄS MER

  3. 2. Faster than Nyquist Signaling with Spatial Coupling

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

    Författare :Haoran Liu; Lingwei Zhang; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The emergence of the Faster-Than-Nyquist signaling (FTN) technology has im- proved the tight spectrum resources by compressing the transmission interval between adjacent pulses. In a natural environment, data transmission via a wire- less medium and through multi-path, at a high data rate, the leakage of these paths among symbols can cause severe inter-symbol interference (ISI). LÄS MER

  4. 3. A Blind Constellation Agnostic VAE Channel Equalizer and Non Data-Assisted Synchronization

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Fredrik Reinholdsen; [2021]
    Nyckelord :Blind; Equalization; Machine Learning; Variational; Autoencoder; VAE; Constellation; Agnostic; Synchronization; Neural; Networks;

    Sammanfattning : High performance and high bandwidth wireless digital communication underlies much of modern society. Due to its high value to society, new and improved digital communication technologies, allowing even higher speeds, better coverage, and lower latency are constantly being developed. LÄS MER

  5. 4. Channel Equalization Using Machine Learning for Underwater Acoustic Communications

    Master-uppsats, Linköpings universitet/Kommunikationssystem

    Författare :Martin Allander; [2020]
    Nyckelord :underwater; communications; channel estimation; channel equalization; machine learning;

    Sammanfattning : Wireless underwater acoustic (UWA) communications is a developing field with various applications. The underwater acoustic communication channel is very special and its behavior is environment-dependent. The UWA channel is characterized by low available bandwidth, and severe motion-introduced Doppler effect compared to wireless radio communication. LÄS MER

  7. 5. Blind Channel Equalization for Shortwave Digital Radio Communications

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Tomas Busk; [2020]
    Nyckelord :Blind Channel Equalization; Equalization; adaptive filter; radio communication; Blind kanalutjämning; kanalutjämning; adaptivt filter; radiokommunikation;

    Sammanfattning : In this thesis the concept of Blind Channel Equalization has been examined and algorithms suitable to blindly equalize the channel are presented and evaluated on simulated data. The concept of blind equalization is to equalize a communica- tions channel without relying on a training sequence or pilot tone, which may be either unknown to the receiver or not exist at all. LÄS MER