Essays about: "channel pilot"

Showing result 1 - 5 of 27 essays containing the words channel pilot.

  1. 1. Performance Analysis of the Uplink of Multi-antenna Systems Operating in Aging Channels

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Prasetyo Putranto; [2023]
    Keywords : Channel aging; Pilot spacing; Rayleigh; Rician; Spectral efficiency; Uncrewed aerial vehicles; Kanalåldring; Pilotavstånd; Rayleigh; Rician; Spectral effektivitet; Obemannade flygfordon;

    Abstract : In wireless communications, employing pilot symbols enables to estimate the state of the wireless channel at the expense of decreasing the number of symbols available for transmitting data. Addressing this trade-off is particularly challenging when the channel changes rapidly over time, since channel estimates become obsolete over short transmission periods. READ MORE

  3. 2. Channel Estimation and Power Control Algorithms in the Presence of Channel Aging

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Yan Bixing; [2023]
    Keywords : Fading channel; auto-regressive model; power allocation; uncrewed aerial vehicle networks; Fading kanal; auto-regressiv modell; krafttilldelning; obemannade flygfordonsnätverk;

    Abstract : 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. READ MORE

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

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

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

    Abstract : 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. READ MORE

  5. 4. Assessment of hydropower mitigation measures for fish habitat rehabilitation with a coupled eco-hydraulic model : A case study on the Skålan-Äldern stretch

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Francesca Polato; [2021]
    Keywords : hydropower; mitigation measures; ecological flow assessment; hydraulic modeling; physical habitat models; vattenkraft; begränsande åtgärder; ekologisk flödesbedömning; hydraulisk modellering; fysiska livsmodeller;

    Abstract : In the past century, hydropower development in Sweden has been facilitated by the lack of appropriate environmental legislation. This exploitation has resulted in the current poor ecological status of most Swedish water bodies affected by hydropower, and in the need for new policies that reflect the 2000 European Water Framework Directive. READ MORE

  6. 5. Potential implications of the introduction of CBDC for the conduct of monetary policy and the preservation of financial and monetary stability : A case study of the Central Bank of Sweden

    University essay from KTH/Industriell ekonomi och organisation (Inst.)

    Author : Iryna Gnatenko; [2020]
    Keywords : CBDC; unconventional monetary policy; central bank; digital money; Sweden; CBDC; digital centralbanksvaluta; okonventionell penningpolitik; centralbank; digitala pengar; Sverige;

    Abstract : The past decade has offered up some fintech innovations that are gradually reshaping the financial sector. Phasing out of paper currencies together with the populatization of the private digital currencies has propelled central banks to consider issuance of their digital currencies – so called Central Bank Digital Currency (CBDC). READ MORE