Results 51 to 60 of about 4,646,007 (214)

A DFT-Based Scheme for PAPR Reduction in SR-OFDM Systems

IEEE Access
This 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

OFDM aided space-time shift keying for dispersive downlink channels [PDF]

, 2012
The performance of a Space-Time Shift Keying (STSK) scheme was shown to degrade in frequency-selective fading channels. Hence, we propose Orthogonal Frequency Division Multiplexing (OFDM) combined with STSK for frequency-selective broadband channels ...
Mohammad Ismat Kadir, Fulvio Babich, Marco Driusso, Babich, Fulvio, Driusso, Marco, L. Hanzo, M. I. Kadir, Kadir, Mohammad Ismat, Hanzo, Lajos, Lajos Hanzo   +9 more
core   +1 more source

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, Aditya Pathania, Shivani Malhotra, Sandeep Kumar, Anusha Dhiman   +4 more
wiley   +1 more source

A Two‐Stage Genetic Algorithm for Joint Optimization of PAPR and PSLR for Precise Signal Reconstruction in OFDM‐ISAC Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper presents a two‐stage genetic algorithm based waveform design framework for OFDM integrated sensing and communication (ISAC) systems. In Stage‐1, a multi‐objective genetic algorithm jointly optimizes the peak‐to‐average power ratio (PAPR) and peak sidelobe level ratio (PSLR) under forward error correction and reserved subcarrier constraints ...
Haidong Xu, Zhanya Li, Xiaoxiao Zhuo, Guyue Zhu, Chenfeng Xu, Liang Tang, Yu Zhao   +6 more
wiley   +1 more source

A Multicarrier Multiplexing Method for Very Wide Bandwidth Transmission

EURASIP Journal on Wireless Communications and Networking, 2006
The multicarrier orthogonal code division multiplexing (MC-OCDM) introduced here has been designed for very wide bandwidth (VWB) point-to-point and point-to-multipoint transmission.
Efthymoglou George, Gerakoulis Diakoumis
doaj  

Multiuser MIMO-OFDM Systems using Subcarrier Hopping

, 2006
Recently space division multiple access (SDMA) assisted multiple-input–multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems invoking multiuser detection (MUD) techniques have attracted substantial research interest, which is ...
Jiang, M, Hanzo, L
core   +1 more source

Computational Bits Maximization Design of UAV‐Assisted MEC System With FD‐NOMA

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper investigates an unmanned aerial vehicle–assisted mobile edge computing system, where computing and communication users coexist. The problem is formulated as a mixed‐integer nonconvex optimization due to the binary nature of channel coefficients.
Shihao Liu, Hang Hu, Wei Liu, Yangchao Huang, Jing Lei   +4 more
wiley   +1 more source

The Performance of Orthogonal Wavelet Division Multiplexing (OWDM) in Flat Rayleigh Fading Channel

Journal of Engineering and Sustainable Development, 2008
The aim of this paper is to investigate the effect of flat Rayleigh fading channel on the performance of the OWDM (Orthogonal Wavelet Division Multiplexing) system.
Fadel S. Hassen
doaj  

Focal‐Curvature‐Aware Near‐Field Beam Focusing and Localisation for Distributed Parallel STAR‐RIS‐Assisted Cylindrical‐Array ISAC Systems

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper develops a focal‐curvature‐aware near‐field ISAC framework for a distributed parallel STAR‐RIS‐assisted system employing a cylindrical‐array base station. Exact spherical‐wave propagation and reciprocal wideband sensing are used to derive an energy–curvature relationship linking focal energy, focal‐coherence curvature, EFIM, and PEB ...
Antwi Owusu Agyeman, Dennis Sackey, Daniel Kuyoli Ngala, Michael Agyare, Ruhiya Abubakar, Martin Alabi Mensah   +5 more
wiley   +1 more source

Key Technologies in Fiber-optic Networks and Its Development Trend

Kongzhi Yu Xinxi Jishu, 2019
It discussed the key enabling technologies in modern fiber-optic systems, especially the applications of digital signal processing (DSP) technologies for compensating the detrimental effects in the optical fiber. In particular, we showed how the advanced
OUYANG Xing, CHEN Gaohua
doaj