Explanipedia

Design and optimization of a Free-Space Optical (FSO) communication system for reliable outdoor connectivity in hospital departments in Malta Open

Ajay Sharma, Lalit Garg, Peter A. Xuereb, Ahmad Atieh · 2025

Background Modern healthcare facilities face the challenge of ensuring secure, high-speed, and interference-free communication across hospital campuses. In Maltese hospitals, electromagnetic interference (EMI) from RF systems and the high…

Low complexity hybrid algorithm for improving PAPR BER and PSD in OTFS under diverse channel conditions Open

Arun Kumar, Aziz Nanthaamornphong, Nishant Gaur, Mehedi Masud, Arun Kumar , et al. · 2025

LSTM-based equalizer with multi-head attention and gating mechanism for 2×2 MIMO photonics-assisted THz wireless system Open

Xiaolong Pan, Siqi Wang, Gang Li, Jianping Zhu, Yuxiao Xu , et al. · 2025

Enhancing underwater acoustic orthogonal frequency division multiplexing based channel estimation: a robust convolution-recurrent neural network framework with dynamic signal decomposition Open

Mansoor Jan, Muhammad Aman, Syed Agha Hassnain Mohsan, Samih M. Mostafa, Faten Khalid Karim , et al. · 2025

Introduction Underwater acoustic (UWA) communication systems confront significant challenges due to the unique, dynamic, and unpredictable nature of acoustic channels, which are impacted by low signal-to-noise ratio (SNR), severe multipath…

Optimal Bit Detection in Thermal Noise Communication Systems Under Rician Fading Open

Jbari, Mohamed El, García, Fernando D. A., Silva, Hugerles S., de Figueiredo, Felipe A. P., de Souza, Rausley A. A. · 2025

Thermal noise communication (TNC) enables ultra-low-power wireless links for Internet of Things (IoT) devices by modulating the variance of thermal noise, rather than using active carriers. Existing analyses often rely on Gaussian approxim…

Quantum key distribution over a three-user fiber network with passive optical circulator Open

Youn-Chang Jeong, Seok Kim, In-Cheol Baek, ChangHo Hong, Daesung Kwon , et al. · 2025

We report the implementation of a quantum key distribution (QKD) system over a three-user fiber-optic network using a passive circulator-based hub built from of 3-port optical circulators. This network topology enables secure key exchange …

Babai-guided Interference-aware Adaptive QRD-M Detection in MIMO-OFDM Communication Systems Open

Mar Mar Lwin, Mohd Fadzli Mohd Salleh, Mar Mar Lwin, Mohd Fadzli Mohd Salleh · 2025

This paper presents an adaptive QRD-M detection algorithm designed to reduce the computational complexity of MIMO systems while maintaining near-maximum likelihood detection (near-MLD) performance. The proposed method introduces a dynamic …

Blind Turbo Demodulation for Differentially Encoded OFDM with 2D Trellis Decomposition Open

Chen Chin-Hung, Wu Yan, van Houtum, Wim, Alvarado, Alex · 2025

Digital Audio Broadcasting (DAB)-like systems employ differentially encoded (DE) phase-shift keying (PSK) for transmission. While turbo-DE-PSK receivers offer substantial performance gains through iterative decoding by making the DE-PSK an…

Practical measurement-device-independent quantum key distribution with two-way classical communication Open

Chun Zhou, Haitao Wang, Jianing Guo, Yanmei Zhao, Ping Wang · 2025

The data post-processing scheme based on two-way classical communication(TWCC) can improve the tolerable bit error rate and expand the secure transmission distance when used in QKD system. In this paper, we demonstrate a significant improv…

SIR Analysis for Affine Filter Bank Modulation Open

Senger, Henrique L., Gonçalves, Gustavo P., Chang, Bruno S., Rou, Hyeon Seok, Ranasinghe, Kuranage Roche Rayan , et al. · 2025

The signal-to-interference ratio (SIR) of the Affine Filter Bank Modulation (AFBM) waveform is analyzed under minimum mean square error (MMSE) equalization in two domains; namely, the affine domain and the filtered time-domain (TD). Due to…

CSI Prediction Frameworks for Enhanced 5G Link Adaptation: Performance-Complexity Trade-offs Open

Díaz-Ruiz Francisco, Martín-Vega, Francisco J., Cortés, José A., Gomez, Gerardo, Aguayo, Mari Carmen · 2025

Accurate and timely channel state information (CSI) is fundamental for efficient link adaptation. However, challenges such as channel aging, user mobility, and feedback delays significantly impact the performance of adaptive modulation and…

Unified Performance Analysis of Free-Space Optical Systems over Dust-Induced Fading Channels Open

Maged Abdullah Esmail · 2025

Free-space optical (FSO) communication systems offer fiber-like bandwidth, high security, and rapid deployment; however, their performance is highly susceptible to atmospheric impairments, such as dust storms, which can cause fading that d…

Joint Bit-Partitioning and Modulation Design for Digital AirComp Open

Yan Xiaojing, Fischione, Carlo · 2025

For digital over-the-air computation, the ChannelComp framework has recently been proposed to design digital modulations to compute any arbitrary function over a multiple access channel. To reduce modulation design complexity while increas…

Bit Error Rate (BER) Performance of Various Digital Modulation Schemes in Three User NOMA Using SIC Under Rayleigh Fading Channel Open

Department of ECE, Sanketika Vidya Parishad Engineering College, Visakhapatnam, India, U. Pradeep Kumar, B. Cyrus · 2025

This paper analyzes the bit error rate (BER) execution of downlink non-symmetrical various access networks for binary phase shift keying adjustment and quadrature phase shift keying regulation. BER is determined for every client under adde…

AI/ML based Joint Source and Channel Coding for HARQ-ACK Payload Open

Doshi, Akash, Sen Pinar, Ivanov, Kirill, Yang Wei, Namgoong June , et al. · 2025

Channel coding from 2G to 5G has assumed the inputs bits at the physical layer to be uniformly distributed. However, hybrid automatic repeat request acknowledgement (HARQ-ACK) bits transmitted in the uplink are inherently non-uniformly dis…

White-Box Modeling of V2X Link Performance Using Stabilized Symbolic Regression Open

Gulia, Rahul, POPOOLA Feyisayo Favour, Sheikh, Ashish · 2025

Reliable modeling of block error rate in vehicle-to-everything wireless networks is critical for designing robust communication systems under dynamic mobility and diverse channel conditions. Traditional machine learning approaches, such as…

White-Box Modeling of V2X Link Performance Using Stabilized Symbolic Regression Open

Gulia, Rahul, POPOOLA Feyisayo Favour, Sheikh, Ashish · 2025

Reliable modeling of block error rate in vehicle-to-everything wireless networks is critical for designing robust communication systems under dynamic mobility and diverse channel conditions. Traditional machine learning approaches, such as…

Increasing the Capacity in NG-PON Using QPSK, 4-QAM, and 8-QAM Modulation Formats Open

Henry C. Cherutoi, Dismas K. Choge, David W. Waswa · 2025

This work demonstrates the potential of a dual-polarized multilevel modulation format with coherent detection (CD) to maximize the spectral efficiency to meet the demand of the next-generation passive optical network (NG-PON). Maximizing c…

Experimental design and performance evaluation of a solar panel-based visible light communication system for greenhouse applications Open

Guillermo Correa Morales, Pablo Palacios Jativa, Diego Dujovne, Luciano Ahumada, Cesar Azurdia-Meza , et al. · 2025

This paper presents the design, implementation, and experimental evaluation of a visible light communication (VLC) system using a small solar panel with a custom signal-conditioning circuit as an optical receiver in a greenhouse environmen…

Orthogonal Chirp Delay-Doppler Division Multiplexing (CDDM) Modulation for High Mobility Communications Open

Bai, Chaoyuan, Fan, Pingzhi, Zhou Zhengchun, Liu, Zilong · 2025

This paper proposes a novel multi-carrier modulation framework for high-mobility communication scenarios. Our key idea lies in spreading data symbols across the delay-Doppler (DD) domain through orthogonal chirp-Zak transform (CZT). To ena…

Orthogonal Chirp Delay-Doppler Division Multiplexing (CDDM) Modulation for High Mobility Communications Open

Bai, Chaoyuan, Fan, Pingzhi, Zhou Zhengchun, Liu, Zilong · 2025

This paper proposes a novel multi-carrier modulation framework for high-mobility communication scenarios. Our key idea lies in spreading data symbols across the delay-Doppler (DD) domain through orthogonal chirp-Zak transform (CZT). To ena…

Fluid Antenna System-Enabled UAV-to-Ground Communications Open

Zhu Xu-sheng, Wong, Kai Kit, Wu Qingqing, Shin, Hyundong, Zhang Yangyang · 2025

Fluid antenna systems (FAS) have emerged as a revolutionary technology offering enhanced spatial diversity within a compact form factor. Concurrently, unmanned aerial vehicles (UAVs) are integral to future networks, necessitating channel m…

Fluid Antenna System-Enabled UAV-to-Ground Communications Open

Zhu Xu-sheng, Wong, Kai Kit, Wu Qingqing, Shin, Hyundong, Zhang Yangyang · 2025

Fluid antenna systems (FAS) have emerged as a revolutionary technology offering enhanced spatial diversity within a compact form factor. Concurrently, unmanned aerial vehicles (UAVs) are integral to future networks, necessitating channel m…

Expanding the Use of Deep Learning for Classification and Control of Congestion in High Band-High BER TCP/IP Networks Open

Marcelo Silva, César Marcondes · 2025

Current research proves the gains that Deep Learning Neural Networks, especially the Multilayer Perceptron (MLP), Long Short-Term Memory (LSTM), and Convolutional Neural Network (CNN) architectures, applied to Congestion Control(CC) can ge…

Safe image transmission with hybrid quantum key-genetic encryption via spatial modulation assisted NOMA Open

Swetha Thennavan, Avila Jayapalan · 2025

This manuscript presents a secure and spectrally efficient Spatial Modulation (SM)-based Non-Orthogonal Multiple Access (NOMA) system for two-user downlink 5G wireless communication. The proposed SM-NOMA shows significant improvements in s…

Revealing computation-communication trade-off in Segmented Pinching Antenna System (PASS) Open

Gan, Deqiao, Xu, Xiaoxia, Ge Xiaohu, Liu Yuanwei · 2025

A joint communication and computation (JCC) framework using segmented pinching antenna system (PASS) is proposed, where both the communication bit streams and computation data are simultaneously transmitted via uplink communications. The s…

Revealing computation-communication trade-off in Segmented Pinching Antenna System (PASS) Open

Gan, Deqiao, Xu, Xiaoxia, Ge Xiaohu, Liu Yuanwei · 2025

A joint communication and computation (JCC) framework using segmented pinching antenna system (PASS) is proposed, where both the communication bit streams and computation data are simultaneously transmitted via uplink communications. The s…

Deep Learning Empowered Signal Detection for Spatial Modulation Communication Systems Open

Shaopeng Jin, Yuyang Peng, Fawaz Al Hazemi, Shaopeng Jin, Yuyang Peng , et al. · 2025

Index modulation (IM) has attracted increasing research attention in recent years. Spatial modulation (SM) as a popular IM scheme is effective to increase spectral efficiency using the antenna index to transmit extra information bits. It c…

Quantum-Enhanced Quickest Change Detection of Transmission Loss Open

Saikat Guha, Tiju Cherian John, Zihao Gong, Prithwish Basu · 2025

Augmenting a train of bright phase-modulated laser-light pulses of a coherent communications system with infinitesimally small quantum photons per pulse -- entangled across several time bins -- prepared by splitting squeezed light in a tem…

Symmetrical Pulse Shape Optimization for Low-Complexity RedCap Devices in Industrial Multipath Channels Open

Anna Orlova, Sergey Zavjalov, Aleksandra Chekireva, Alexandra Kuznetsova, Ilya Lavrenyuk , et al. · 2025

Wireless communications in industrial environments are challenged by severe multipath propagation, which causes significant signal distortion. Conventional mitigation techniques, such as complex equalizers, are unsuitable as they contradic…

Bit error rate