Essays about: "rayleigh rician fading"

Showing result 1 - 5 of 9 essays containing the words rayleigh rician fading.

  1. 1. 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

  3. 2. Performance of a Non-Orthogonal Multiple Access System with Full-duplex Relaying over Nakagami-m Fading

    University essay from Blekinge Tekniska Högskola/Fakulteten för datavetenskaper

    Author : Rahul Chowdary Erpina; Viswakanth Reddy Gopireddy; [2021]
    Keywords : NOMA; Full Duplex Relaying; Nakagami-m Fading; Power domain NOMA; Successive Interference Cancellation; Half Duplex Relaying; OFDMA; Code domain-NOMA; Time domain-NOMA.;

    Abstract : In our thesis work, we analyze the performance analysis of a power domain NonOrthogonal Multiple Access (NOMA) system in which the closer user acts as fullduplex relaying to forward the signal to farther user. Because Nakagami-m distribution is a generalized case including the two common fading distributions as specialcases: Rayleigh distribution (m=1), Rician distribution (m>1). READ MORE

  4. 3. Intelligent Beam Weight Computation for Massive Beamforming

    University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Author : Rohan Appilla Chakravarthula; Chaithanya Kumar Reddy Veluru; [2017]
    Keywords : ;

    Abstract : LTE (Long Term Evolution) is likely the most complex wireless system ever developed. It incorporates features that could not have been economically implemented as recently as a decade ago. Today, with large-scale ICs, LTE can be easily accommodated in base stations and battery-powered handsets alike. READ MORE

  5. 4. Comparison and Evaluation of Doppler Spread Estimation Algorithms in WCDMA

    University essay from KTH/Kommunikationsteori

    Author : Hui Wen; [2014]
    Keywords : ;

    Abstract : In a WCDMA transmission systems, the properties of the radio transmissionchannels can be strongly aected by the movement of User Equipment (UE) orthe surrounding objects. The estimation of Doppler spread is therefore of greatimportance since it is closely related to the mobile speed, as it can also be usedto characterize the fast fading in the radio channel. READ MORE

  6. 5. Performance and Complexity Comparison of Doppler Spread Estimation for WCDMA Systems

    University essay from KTH/Kommunikationsteori

    Author : Ziqi Peng; [2014]
    Keywords : Doppler spread estimation; WCDMA uplink systems; Rayleigh fading model; Rician fading model; computational complexity.;

    Abstract : In cellular communication systems, the estimation of Doppler spread has a wide range of applications such as handoff, channel assignment scheme, adaptivetransmission, power control, etc. A great quantity of Doppler spread estimation algorithms have been proposed in the literature. READ MORE