Results 31 to 40 of about 3,697 (183)
IET Communications, Volume 20, Issue 1, January/December 2026.A hybrid framework of deep learning‐based channel estimation for robust communication in free space optical (FSO)‐based low earth orbit (LEO) satellite system using advanced modulation formats for orthogonal frequency division multiplexing (OFDM) transmission. Simulations demonstrate that STA‐ SRCNN and STA‐DNCNN excel in terrestrial FSO channels (NMSE
Saad Rustum +4 more
wiley +1 more source
Unified Downlink‐Uplink Waveform Optimization For MIMO‐OFDM Integrated Sensing and Communication
IET Communications, Volume 20, Issue 1, January/December 2026.This paper presents a unified waveform allocation framework for downlink and uplink MIMO‐OFDM integrated sensing and communication (ISAC) systems in 6G networks. We develop five optimization schemes, including optimal‐for‐communication, optimal‐for‐sensing, and MMSE‐based joint allocation, with closed‐form expressions for spectral efficiency, sensing ...
Gujjula Ramya +2 more
wiley +1 more source
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
Experimental Study on Shortwave Communication and OTHR Integrated System Based on OFDM Waveform
Leida xuebao, 2012 Based on the recently developed active-passive multifunctional all-digital HF surface wave radar hardware platform of Wuhan University, an experiment study of integrated technology for shortwave communication and Over-The-Horizon Radar (OTHR) application
Shao Qi-hong +4 more
doaj +1 more source
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
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
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
doaj +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
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
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