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Decoding of polar-coded OFDM systems over multipath fading channels with interleaving and channel state information [PDF]

open access: yesScientific Reports
In this paper, we investigate the decoding performance and corresponding decoding strategies for polar-coded orthogonal frequency division multiplexing (OFDM) system operating under multipath fading channels.
Mingbao Wu   +5 more
doaj   +2 more sources

Transformer based HF communication demodulation [PDF]

open access: yesScientific Reports
In low signal-to-noise ratio (SNR) environments, shortwave channels are subject to impairments such as multipath effects, frequency-selective fading, and time-selective fading.
Can Lu   +5 more
doaj   +2 more sources

Performance Analysis of MIMO STBC System in Flat Fading and Frequency Selective Fading Channels

open access: yesJournal of Electrical, Electronics and Informatics, 2019
Multiple Input Multiple Output (MIMO) technology is a technique that can be used to overcome multipath fading. The multipath fading is caused by signals coming from several paths that experience different attenuations, delays and phases.
Pebri Yeni Samosir   +3 more
doaj   +1 more source

Improved Pilot-Aided Channel Estimation for MIMO-OFDM Fading Channels

open access: yesInternational Journal of Antennas and Propagation, 2013
An improved pilot-aided channel estimation scheme is proposed to enhance the channel estimation accuracy of multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) fading channels. Based on the adaptive path number selection
J. Mar, Chi-Cheng Kuo, M. B. Basnet
doaj   +1 more source

Single-Carrier Rotation-Interleaved Space-Time Code for Frequency-Selective Fading Channels

open access: yesApplied Sciences, 2022
A novel single-carrier-based space-time code construction scheme to exploit the advantages of a frequency-selective fading channel is investigated in this paper.
Benjamin K. Ng, Chan-Tong Lam
doaj   +1 more source

Least Mean Square Frequency Domain Equalization for MIMO SC-FDMA System

open access: yesZanco Journal of Pure and Applied Sciences, 2019
Because single carrier modulation has low peak average power ratio (PAPR), it is used instead of multicarrier modulation in uplink transmission in Long Term Evolution (LTE).
Maha George Zia
doaj   +1 more source

A Low-Complexity Equalizer for Video Broadcasting in Cyber-Physical Social Systems Through Handheld Mobile Devices

open access: yesIEEE Access, 2020
In Digital Video Broadcasting-Handheld (DVB-H) devices for cyber-physical social systems, the Discrete Fractional Fourier Transform-Orthogonal Chirp Division Multiplexing (DFrFT-OCDM) has been suggested to enhance the performance over Orthogonal ...
Ahmad A. A. Solyman   +7 more
doaj   +1 more source

Neural network channel estimator for time‐variant frequency‐selective fading channels

open access: yesElectronics Letters, 2023
The next generations of wireless communications systems are pushing the limits of the channel estimation methods utilized in the orthogonal frequency division multiplexing receptors.
Vinicius Piro Barragam   +2 more
doaj   +1 more source

Robust Sampling Frequency Offset Estimation for OFDM over Frequency Selective Fading Channels

open access: yesApplied Sciences, 2018
Digital radio mondiale (DRM) is a terrestrial radio broadcasting standard to replace existing analogue AM and FM broadcasting, which is based on an orthogonal frequency division multiplexing (OFDM) technique. This paper focuses on the issue of estimating
Yong-An Jung, Young-Hwan You
doaj   +1 more source

IEEE 802.11ax OFDMA Resource Allocation with Frequency-Selective Fading

open access: yesSensors, 2021
This paper studies the usage of orthogonal frequency division multiple access (OFDMA) for uplink transmissions in IEEE 802.11ax networks. OFDMA enables simultaneous multi-user transmissions in Wi-Fi, but its usage requires efficient resource allocation ...
Sergei Tutelian   +3 more
doaj   +1 more source

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