Results 91 to 100 of about 4,021,406 (264)

ABER Performance of OFDM-IM systems by RIS design in the presence of IQI and α-μ fading

Engineering Science and Technology, an International Journal
Index modulation (IM) techniques are among the competitive candidates for fifth-generation and beyond (5GB) systems, offering new ways of conveying information thanks to their advantages such as structure flexibility and hardware convenience.
Busra Karahan, Ibrahim Develi, Ayse Elif Canbilen, Hussam Alsalameh   +3 more
doaj   +1 more source

A Generalized Bit Error Rate Evaluation for Index Modulation Based OFDM System

IEEE Access, 2020
Orthogonal frequency division multiplexing (OFDM-IM) is a multicarrier transmission technology that modulates information bits not just onto subcarriers by means of M-ary constellation mapping but also onto selected (active) subcarrier indices ...
Mahmoud Abdullahi, Aijun Cao, Adnan Zafar, Pei Xiao, Ibrahim A. Hemadeh   +4 more
doaj   +1 more source

Exact Analysis of SIR Performance for the Mobile OFDM Communication Systems Over the Underwater Acoustic Channel

Electronics Letters, Volume 62, Issue 1, January/December 2026.
1.This paper develops an analytical model to calculate the signal‐to‐interference ratio performance of mobile orthogonal frequency division multiplexing underwater acoustic (UWA) communication systems. 2.The model accounts for UWA channel distortion and non‐uniform Doppler effects, maintaining high accuracy across a range of Doppler shift magnitudes. 3.
Xinyu Liu, Xiaowei Li, Mingyang Lu, Yuhang Gao, Miao Yu   +4 more
wiley   +1 more source

Deep Recurrent Neural Network Based Detector for OFDM With Index Modulation

IEEE Access
Index modulation (IM) leads to a decrease in power consumption and transmitter complexity compared to classical orthogonal frequency division multiplexing (OFDM) systems.
Md Abdul Aziz, Md Habibur Rahman, Mohammad Abrar Shakil Sejan, Rana Tabassum, Duck-Dong Hwang, Hyoung-Kyu Song   +5 more
doaj   +1 more source

Spatio‐Temporal cGAN Based Channel Estimation for Low‐Altitude Integrated Sensing and Communication Systems

Electronics Letters, Volume 62, Issue 1, January/December 2026.
Reliable channel estimation in low‐altitude ISAC is challenged by UAV‐induced fast‐varying and non‐stationary channels. We present an ST‐cGAN framework that jointly models spatial and temporal features under conditional adversarial learning, achieving superior accuracy and robustness compared with conventional and deep learning baselines.
Guixin Pan, Honghui Xu, Yixuan Wang, Kang Kang, Wenbin Li, Tianyi Liu   +5 more
wiley   +1 more source

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  

Ambiguity Function Optimization Based on Joint Communication and Sensing Waveform

Electronics Letters, Volume 62, Issue 1, January/December 2026.
The sidelobe suppression strategy proposed in this study demonstrates significant advantages. Its ability to effectively reduce ambiguity function sidelobes has important practical significance for engineering. ABSTRACT The ambiguity function (AF) plays a critical role in joint communication and sensing (JCAS) systems. In this letter, we design a novel
Zheming Guo, Baixiao Chen
wiley   +1 more source

Carrier frequency synchronization for WLAN systems based on MIMO-OFDM-IM

EURASIP Journal on Wireless Communications and Networking
Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) with index modulation (IM) MIMO-OFDM-IM is a modulation technique that has garnered significant interest in recent times owing to its attraction of smooth transition ...
H. Lalitha, Navin Kumar
semanticscholar   +1 more source

Statistical Distribution of EVM Measurements for Direct-Modulation Radio-Over-Fiber Links Transporting OFDM Signals [PDF]

, 2013
The effect of distortion on the error vector magnitude (EVM) performance of orthogonal frequency-division multiplexing (OFDM) signals with different numbers of subcarriers and the connection to the peak-to-average power ratio (PAPR) of such signals is ...
Nkansah, Anthony, Gomes, Nathan J., Wake, David, Assimakopoulos, Philippos   +3 more
core   +1 more source

Modification of Synthetic Filtered Output for PSL Reduction in DFT‐Spread OFDM MIMO Radar Using Doppler‐Tolerant Extended Space‐Time Coding

Electronics Letters, Volume 62, Issue 1, January/December 2026.
We propose a Doppler‐tolerant DFT‐spread orthogonal time‐coded OFDM (DSS‐OTC‐OFDM) waveform for MIMO radar that maintains orthogonality under Doppler shifts while enabling flexible code design. An optimisation framework is developed to minimise peak sidelobe level (PSL) and suppress cross‐correlation after matched filtering across a range of Doppler ...
Ata Nokhostin Roohi, Hossein Soleimani, Mohammad Soleimani   +2 more
wiley   +1 more source