Xi Nan, Rugui Yao, Wanying Su, Ye Fan, Xiaoya Zuo, Shady A Deraz
{"title":"Cooperative Sensing in Short-Packet ISAC Systems Based on Superimposed Pilots","authors":"Xi Nan, Rugui Yao, Wanying Su, Ye Fan, Xiaoya Zuo, Shady A Deraz","doi":"10.1109/lwc.2026.3714781","DOIUrl":"https://doi.org/10.1109/lwc.2026.3714781","url":null,"abstract":"","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"8 1","pages":""},"PeriodicalIF":6.3,"publicationDate":"2026-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148522657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sharan Mourya;Pavan Reddy;SaiDhiraj Amuru;Kiran Kumar Kuchi
{"title":"Erdős Goes Neural Pipeline-Based User Pairing in Wireless Communication Networks","authors":"Sharan Mourya;Pavan Reddy;SaiDhiraj Amuru;Kiran Kumar Kuchi","doi":"10.1109/LWC.2026.3669184","DOIUrl":"10.1109/LWC.2026.3669184","url":null,"abstract":"The next-generation Internet-of-Thing (IoT) systems require support for massive device connectivity, low latency, and high spectral efficiency. Scheduling the users on the same time-frequency resources while separating them spatially can help in realizing the aforementioned requirements. selecting users to be scheduled together while minimizing interference and maximizing throughput (known as user-pairing) is essentially an NP-hard optimization problem. Recently, deep neural networks have emerged as a solution to solve NP-hard wireless resource allocation problems in real-time. In this letter, we propose an unsupervised graph neural network (GNN) approach to efficiently solve the user pairing problem. Our proposed method utilizes the Erdős goes neural pipeline to significantly outperform other scheduling methods such as <inline-formula> <tex-math>$k$ </tex-math></inline-formula>-means and semi-orthogonal user scheduling (SUS). At 20 dB SNR, our proposed approach achieves a 49% better sum rate than <inline-formula> <tex-math>$k$ </tex-math></inline-formula>-means and a staggering 95% better sum rate than SUS while consuming minimal time and resources.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"2025-2029"},"PeriodicalIF":5.5,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147350854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Novel Lightweight Hybrid MLP and Quantum Neural Network Model for Bit Error Rate Prediction in NOMA-Enabled Visible Light Communication Systems","authors":"Vipul Dixit;Bhuvan Unhelkar;Abhay Bansal;Mandeep Mittal","doi":"10.1109/LWC.2026.3669027","DOIUrl":"10.1109/LWC.2026.3669027","url":null,"abstract":"In this letter, a lightweight hybrid Multi-Layer Perceptron-Quantum Neural Network (MLP-QNN) architecture for Bit Error Rate (BER) prediction in Non-Orthogonal Multiple Access-Visible Light Communication (NOMA-VLC) systems is proposed. The proposed approach integrates classical preprocessing with variational quantum circuits (VQC) using ZFeatureMap encoding and TwoLocal ansatz in a compact 170-parameter structure implemented through Qiskit-PyTorch framework. The quantum circuits serve as enhanced feature extractors to capture complex NOMA-VLC dynamics. Simulation results demonstrate the superiority of the hybrid quantum-classical approach, achieving R2 scores of 0.9989 and 0.9985 for far and near users, with <inline-formula> <tex-math>$1-1.5$ </tex-math></inline-formula> dB SNR gains over classical MLP, advanced classical and analytical methods at reduced computational requirements. The model achieves the high accuracy and <inline-formula> <tex-math>$approx ~0.8$ </tex-math></inline-formula> dB SNR gains under noisy simulation, confirming quantum noise robustness.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"2010-2014"},"PeriodicalIF":5.5,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147319626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohd Hamza Naim Shaikh;Kai-Kit Wong;Farshad Rostami Ghadi;Chan-Byoung Chae;Yangyang Zhang
{"title":"Sum-Rate Maximization for FRIS-Enabled NOMA Communications","authors":"Mohd Hamza Naim Shaikh;Kai-Kit Wong;Farshad Rostami Ghadi;Chan-Byoung Chae;Yangyang Zhang","doi":"10.1109/LWC.2026.3668382","DOIUrl":"10.1109/LWC.2026.3668382","url":null,"abstract":"The fluid antenna system (FAS) concept introduces shape- and position-reconfigurability, unlocking significant performance gains for future wireless networks. In this letter, we extend it to fluid reconfigurable intelligent surfaces (FRIS), where each reflecting element can reposition itself on demand within a prescribed subregion. We investigate a multi-user FRIS-assisted downlink non-orthogonal multiple access (NOMA) system and formulate a network-level sum-rate maximization problem that jointly involves user clustering, FRIS element selection, phase-shift design, and NOMA power allocation under per-user quality-of-service (QoS) constraints. The resulting mixed-integer non-linear program is computationally challenging due to its hybrid binary-continuous decision space and the spatial correlation across the FRIS surface. To address this, we adopt a two-stage design: (i) distance-based interleaved clustering that partitions the <inline-formula> <tex-math>$U$ </tex-math></inline-formula> users into <inline-formula> <tex-math>$C$ </tex-math></inline-formula> NOMA clusters scheduled in orthogonal time slots, and (ii) per-cluster FRIS-NOMA optimization. For each cluster, we first apply a cross-entropy (CE) scheme to select a high-quality FRIS element-activation mask using a lightweight multi-user cascaded channel-gain metric, and then optimize the continuous phase shifts and NOMA power coefficients for the selected mask via a grey wolf optimizer (GWO) with a penalty-augmented fitness function. Simulation results demonstrate that the proposed FRIS-NOMA framework yields substantial sum-rate gains over conventional RIS-aided NOMA/OMA benchmarks and operates close to an ideal continuous-phase FRIS upper bound across diverse propagation conditions.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"1995-1999"},"PeriodicalIF":5.5,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147319640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oluwaseyi Giwa;Tobi Ebenezer Awodumila;Muhammad Ahmed Mohsin;Ahsan Bilal;Muhammad Ali Jamshed
{"title":"Meta-Reinforcement Learning for Fast and Data-Efficient Spectrum Allocation in Dynamic Wireless Networks","authors":"Oluwaseyi Giwa;Tobi Ebenezer Awodumila;Muhammad Ahmed Mohsin;Ahsan Bilal;Muhammad Ali Jamshed","doi":"10.1109/LWC.2026.3668310","DOIUrl":"10.1109/LWC.2026.3668310","url":null,"abstract":"Efficient spectrum allocation is vital for 5G/6G networks, yet traditional deep reinforcement learning (DRL) methods suffer from high sample complexity and unsafe exploration that can disrupt network stability. To address these challenges, we propose a meta-learning framework that learns a robust initial policy capable of rapid and safe adaptation to changing wireless conditions. We implement three meta-learning architectures using model-agnostic techniques—model-agnostic meta-learning (MAML), recurrent neural network (RNN), and RNN with a self-attention mechanism—and compare them against a DRL baseline and classical heuristic approaches in a dynamic integrated access/backhaul (IAB) environment. The attention-based agent achieves a peak throughput of <inline-formula> <tex-math>$approx 49$ </tex-math></inline-formula> Mbps, reducing SINR and latency violations by over 60% relative to PPO, and attains 97% of the fairness level of the exhaustive-search upper bound. These results demonstrate that meta-learning enables data-efficient, reliable, and scalable spectrum management for next-generation wireless systems.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"2000-2004"},"PeriodicalIF":5.5,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147319650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qiumei Guo;Yuancheng Yao;Qiuyun Zhang;Hong Jiang;Fanrong Shi
{"title":"Frenet–Serret Frame Aided Beam Tracking for High-Mobility UAV mmWave Communications: A Geometric Approach","authors":"Qiumei Guo;Yuancheng Yao;Qiuyun Zhang;Hong Jiang;Fanrong Shi","doi":"10.1109/LWC.2026.3668056","DOIUrl":"10.1109/LWC.2026.3668056","url":null,"abstract":"Narrow millimeter-wave (mmWave) beams are highly susceptible to misalignment during aggressive maneuvers of high-mobility uncrewed aerial vehicles (UAVs). To address this challenge, this letter proposes a lightweight beam tracking method leveraging the Frenet-Serret (F-S) frame, a fundamental construct of differential geometry that encodes the intrinsic geometric characteristics of the UAV’s trajectory. The key innovation lies in utilizing the F-S frame as a motion-adaptive, real-time coordinate system, enabling direct mapping of instantaneous kinematic states (e.g., velocity and acceleration) to the optimal beam direction for post-initialization tracking, without relying on explicit channel estimation or historical data. Simulations demonstrate that our method outperforms LSTM-based and EKF-based approaches in typical high-mobility trajectories, reducing the beam misalignment error by over 73% on average. The method also maintains millisecond-level computational delay with less than 1% spectral efficiency loss. This work validates the proposed geometric approach as an accurate and efficient solution for beam tracking in high-mobility mmWave systems.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"2114-2118"},"PeriodicalIF":5.5,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147287253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pairwise Base Station Synchronization via Joint Tensor Decomposition for Networked ISAC","authors":"Lin Chen;Yifan Liang;Hongbin Li","doi":"10.1109/LWC.2026.3667790","DOIUrl":"10.1109/LWC.2026.3667790","url":null,"abstract":"This letter proposes a tensor-based framework for estimating the timing offset (TO) and carrier frequency offset (CFO) between base stations (BSs) in a networked integrated sensing and communication (ISAC) system. Unlike a recently introduced super-resolution offset estimation by matrix pencil (SOE-MP) method that compresses the received signal matrix in BS-BS links into a vector, the proposed framework employs canonical polyadic decomposition (CPD) to preserve and exploit the spatial-time-frequency structure of the data. Through CPD, our framework separates multipath channel components, enabling TO estimation that is robust against multipath delay interference, a major limitation of the SOE-MP method. The proposed CPD framework operates in a joint manner, where the CFO-related factor matrix is shared between two CPDs based on a reciprocity in BS-BS links. The framework also incorporates a Vandermonde structural constraint on the TO- and CFO-related factor matrices. These structured factors can be efficiently optimized via a correlation-based scheme. The Cramér-Rao bound for offset estimation and the uniqueness conditions for the Vandermonde structured CPDs are provided to characterize the theoretical performance limit. Simulation results demonstrate the superior estimation performance of the proposed tensor-based method compared to the conventional approach.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"1990-1994"},"PeriodicalIF":5.5,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147287269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pose-VAE: A Pose-Guided End-to-End Semantic Communication System With Semantic Knowledge Base","authors":"Yujing Xie;Meiyi Zhu;Biling Zhang;Caili Guo","doi":"10.1109/LWC.2026.3667179","DOIUrl":"10.1109/LWC.2026.3667179","url":null,"abstract":"While deep learning has considerably advanced semantic communication, image transmission techniques continue to face persistent challenges, particularly in capturing spatial structure and preserving semantic integrity against channel noise. To address these issues, we propose a pose-guided end-to-end semantic communication system with a semantic knowledge base (Pose-VAE). Specifically, we integrate human pose information to guide semantic feature extraction, enabling the network to model spatial structures. In addition, we design a novel semantic knowledge base (SKB) that encodes clustered pose categories as structural priors to enhance robustness against channel noise. Extensive experiments demonstrate that Pose-VAE significantly improves image reconstruction quality, particularly under the low signal-to-noise ratio (SNR) conditions.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"2005-2009"},"PeriodicalIF":5.5,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147279897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Twin Fused Semantic Communication for Image Transmission With Equalization","authors":"Yuxuan Lei;Ying Zhang","doi":"10.1109/LWC.2026.3667169","DOIUrl":"10.1109/LWC.2026.3667169","url":null,"abstract":"This letter investigates a dual-source semantic communication setting in which semantically correlated visual information is transmitted over heterogeneous channels and jointly decoded at the receiver. Built upon existing DeepJSCC architectures, this work focuses on improving joint semantic decoding under heterogeneous channel conditions by combining an efficient encoder design with receiver-side semantic equalization. An encoder design incorporating expanded bottleneck downsampling (EBD) is adopted to improve representation efficiency and reduce transmitter-side complexity, providing the primary performance gain. In addition, a receiver-side spatial–channel equalization (SCE) module is introduced to mitigate channel-imbalance effects and yield a consistent additional improvement during joint decoding. Experiments demonstrate improved PSNR and MS-SSIM under heterogeneous SNR conditions, validating the complementary roles of encoder efficiency and receiver-side equalization in robust joint semantic decoding.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"2020-2024"},"PeriodicalIF":5.5,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147279771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chirp-Based Design for Robust Landing Systems","authors":"Katia Abtouche;Kenza Abela;Ayoub Ammar Boudjelal;Hüseyin Arslan","doi":"10.1109/LWC.2026.3666739","DOIUrl":"10.1109/LWC.2026.3666739","url":null,"abstract":"Instrument landing systems (ILS) are critical for safe aircraft landings, yet conventional designs suffer from multipath and limited sensing precision, making them unsuitable for highly automated future aviation. Although global positioning system (GPS) aiding has been proposed, it remains vulnerable to interference and jamming. This letter introduces a built-in precision-enhancement technique that extracts angular guidance from delay shifts using orthogonally transmitted chirp signals at distinct frequencies, where embedded delay patterns enable accurate estimation of aircraft deviation relative to the runway centerline and glide path. Simulation results, including receiver operating characteristic and angular root mean square error analyses, demonstrate high guidance precision.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"15 ","pages":"1946-1950"},"PeriodicalIF":5.5,"publicationDate":"2026-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146231195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}