Results 41 to 50 of about 4,474,307 (216)
IEEE Photonics Journal, 2022 We put forward and provide the first illustration of a high capacity and high spectral efficient free space optical communication (FSOC) system using digital domain power division multiplexing orthogonal-frequency-division-multiplexed (DDPD-O-OFDM ...
Wahyu Hendra Gunawan +6 more
doaj +1 more source
Efficient Intercarrier Interference Mitigation for Pilot-Aided Channel Estimation in OFDM Mobile Systems [PDF]
, 2011 Motivated by the possibility of decreasing the intersymbol interference (ISI) which is due to large delays of a multipath mobile radio channel, orthogonal frequency division multiplexing (OFDM) became very popular. However, the timevariance of the mobile
Groh, Ingmar, Dammann, Armin
core
Secret Key Extraction Using Stable Channel Impulse Response in OFDM Wireless Networks
IET Communications, Volume 20, Issue 1, January/December 2026.The process of converting a complex impulse response (CIR) highest peak into a binary sequence is called ‘quantisation’. By quantising the CIR highest peaks, Alice and Bob will generate the secret key bit sequences KA and KB, respectively. The number of CIR highest peaks is infinite, and these highest peaks can be easily selected from the set of CIRs ...
Dinh Van Linh +2 more
wiley +1 more source
OFDM SIGNAL ENERGY CHARACTERISTICS RESEARCH IN CHANNEL WITH PERMANENT PARAMETERS
Information and Telecommunication Sciences, 2013 The simulation model for OFDM (Orthogonal Frequency Division Multiplexing) signal energy characteristics research is developed. The OFDM signal vector-phase states are examined. The momentary amplitudes distribution function is obtained.
Leonid Uryvskyi, Serhii Osypchuk
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IET Communications, Volume 20, Issue 1, January/December 2026.This paper addresses the issue of sampling point offset and ranging bias caused by frequency discrepancies between the crystal oscillators of transceivers in bistatic sensing systems, proposing an expert‐guided cross‐attention network. ABSTRACT With the rapid evolution of wireless communication networks, it has become increasingly desirable for base ...
Haitao Zhao +4 more
wiley +1 more source
IET Communications, Volume 20, Issue 1, January/December 2026.To address the challenges of channel sensitivity and reliability in aircraft cabin environments, this paper proposes a reinforcement learning‐assisted bidirectional communication system utilizing visible light for the downlink and infrared for the uplink. By combining an improved, resource‐efficient LMMSE algorithm for channel estimation with RL‐driven
Lei Xiao +5 more
wiley +1 more source
Non-Orthogonal Multicarrier Waveform for Radar With Communications Systems: 24 GHz GFDM RadCom
IEEE Access, 2019 In this paper, we propose the usage of Generalized Frequency Division Multiplexing (GFDM), a non-orthogonal multicarrier waveform for radar. We presented a novel method that cancels the effect of interference caused by the non-orthogonality of GFDM ...
Jessica B. Sanson +3 more
doaj +1 more source
Estudo da transformada de Walsh-Hadamard aplicada à transmissão OFDM [PDF]
, 2006 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Esta dissertação apresenta um estudo da aplicação da Transformada de Walsh-Hadamard (WHT) em diferentes sistemas OFDM ...
Doniak, Marcio Henrique
core
Leveraging GRU Networks for Robust and Efficient Vehicular Channel Estimation
IET Communications, Volume 20, Issue 1, January/December 2026.Precise channel estimation becomes vital in robust vehicular communication, particularly in high‐mobility scenarios where conventional techniques such as Least Squares (LS), Minimum Mean Square Error (MMSE), Data Pilot‐Aided (DPA), and Orthogonal Matching Pursuit (OMP) methods frequently fail owing to error propagation and computational inefficiencies.
Sakhshra Monga +4 more
wiley +1 more source
A DFT-Based Scheme for PAPR Reduction in SR-OFDM Systems
IEEE AccessThis paper focuses on the peak-to-average power ratio (PAPR) reduction in symbol repetition-based orthogonal frequency division multiplexing (SR-OFDM) systems, and a discrete Fourier transform (DFT)-based scheme is proposed to reduce the PAPR of SR-OFDM ...
Haojia Lv
doaj +1 more source