IEEE Communications Letters最新文献

A Joint Pilot-Data Sparse Vector Transmission Framework for Short-Packet URLLC 一种短包URLLC联合导频数据稀疏矢量传输框架

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-03-04 DOI: 10.1109/LCOMM.2026.3670309

Xuewan Zhang;Keqi Wang

引用次数: 0

Short-Packet Communications for Pinching-Antenna Systems 夹紧天线系统的短分组通信

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-03-02 DOI: 10.1109/LCOMM.2026.3669227

Tu-Trinh Thi Nguyen;Xuan-Xinh Nguyen;Ngan V. T. Nguyen

引用次数: 0

Lightweight Federated Learning Based on SNNs and Gradient Quantization Clipping 基于snn和梯度量化裁剪的轻量级联邦学习

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-03-02 DOI: 10.1109/LCOMM.2026.3669606

Jianfeng Shi;Zhongping Tan

引用次数: 0

Satellite Coverage Probability With Multi-RIS Deployments Under Correlated LoS Conditions 相关LoS条件下多ris部署的卫星覆盖概率

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-03-02 DOI: 10.1109/LCOMM.2026.3669196

Ahmed Al-Amri;Akram Al-Hourani;Saman Atapattu;Bassel Al Homssi

{"title":"Satellite Coverage Probability With Multi-RIS Deployments Under Correlated LoS Conditions","authors":"Ahmed Al-Amri;Akram Al-Hourani;Saman Atapattu;Bassel Al Homssi","doi":"10.1109/LCOMM.2026.3669196","DOIUrl":"https://doi.org/10.1109/LCOMM.2026.3669196","url":null,"abstract":"Urban environments pose a fundamental challenge to millimeter-wave (mmWave) satellite communications (SatCom) by introducing spatially correlated line-of-sight (LoS) blockage, also known as shadowing, which degrades reliability, even with the assistance of reconfigurable intelligent surfaces (RIS). We develop a tractable analytical framework to evaluate the success probability of SatCom systems aided by multi-RIS deployments while considering the crucial factor of correlated LoS conditions. First, we derive an analytical closed-form expression for the exact per-realization success probability. To address the intractability of averaging over minimum-distance constrained (repulsive) RIS deployments, we propose a geometry-averaged formulation by approximating the Matérn hard-core (MHC) process with an inhomogeneous PPP (IPPP) of a known conditional intensity. We then propose a scalable annular-averaging method that replaces the radial integral with ringwise averages, enabling efficient large-scale analysis. Monte Carlo simulations confirm the model’s validity and reveal the impact of blockage intensity, correlation decay, and RIS–user separation, thus providing practical guidelines for RIS deployment to assist future non-terrestrial networks.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"30 ","pages":"1250-1254"},"PeriodicalIF":4.4,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440566","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}

引用次数: 0

PAD-STT: A Pre-Denoising Adaptive Decomposition Spatial–Temporal Transformer for Cellular Traffic Prediction 一种用于元胞交通预测的预去噪自适应分解时空转换器

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-02-27 DOI: 10.1109/LCOMM.2026.3668938

Geng Chen;Xiantao Du;Fei Shen;Qingtian Zeng;Yu-Dong Zhang

引用次数: 0

Digital-Twin-Enabled Outage Detection and Uplink Availability Optimization With UAV Assistance 无人机辅助下的数字双机故障检测和上行链路可用性优化

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-02-27 DOI: 10.1109/LCOMM.2026.3669035

Abdullah Othman;Georges Kaddoum;João V. C. Evangelista;Minh Au;Basile L. Agba

引用次数: 0

Finite Blocklength MIMO Precoding With Mixed Power and QoS Constraints 具有混合功率和QoS约束的有限块长MIMO预编码

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-02-23 DOI: 10.1109/LCOMM.2026.3666785

Jingchen Wu;Ruiding Hou;Jiaheng Wang;Yongming Huang;Sen Wang;Liang Xia;Jing Jin

{"title":"Finite Blocklength MIMO Precoding With Mixed Power and QoS Constraints","authors":"Jingchen Wu;Ruiding Hou;Jiaheng Wang;Yongming Huang;Sen Wang;Liang Xia;Jing Jin","doi":"10.1109/LCOMM.2026.3666785","DOIUrl":"https://doi.org/10.1109/LCOMM.2026.3666785","url":null,"abstract":"Multiple-input multiple-output (MIMO) technology is fundamental in communication systems, where precoding plays a crucial role in improving spectral efficiency. Most existing precoding methods either assume infinite blocklength (IBL) or handle only a single sum power constraint (SPC). However, realistic systems often operate with finite blocklength (FBL), especially in ultra-reliable low-latency communication (URLLC), and face diverse power limits, such as per-antenna and per-group power constraints. This renders the IBL rate formulation insufficient and necessitates precoding methods tackling various power constraints in the FBL regime. In this letter, we aim to enhance overall FBL rate performance of MIMO systems under quality-of-service (QoS) requirements and mixed power constraints (MPCs) that can encompass various power limitations. Unlike previous methods that directly solve the original nonconvex precoding design problem, we first convert it to an equivalent SINR-allocation problem and then propose two efficient algorithms, i.e., a bi-direction gradient method (BDGM) and an iterative water-filling (IWF) algorithm with guaranteed convergence properties. The proposed algorithms are applicable to single-cell, multi-cell, and cell-free systems, and can achieve satisfactory performance at lower complexity.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"30 ","pages":"1235-1239"},"PeriodicalIF":4.4,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362323","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}

引用次数: 0

Masked Autoencoder for Few-Shot Specific Emitter Identification: An Attention-Enhanced Approach 基于掩码自编码器的少射特定发射器识别：一种增强注意的方法

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-02-23 DOI: 10.1109/LCOMM.2026.3667034

Long Yang;Wencong Li;Zhenhan Zhao;Yuchen Zhou;Fanggang Wang;Huaiyu Tang

引用次数: 0

Cellular-Connected UAV Flight Velocity Estimation Using a 3D Linear Path 基于三维线性路径的蜂窝互联无人机飞行速度估计

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-02-19 DOI: 10.1109/LCOMM.2026.3664862

Ajay Kumar;Sateesh Kumar Awasthi

{"title":"Cellular-Connected UAV Flight Velocity Estimation Using a 3D Linear Path","authors":"Ajay Kumar;Sateesh Kumar Awasthi","doi":"10.1109/LCOMM.2026.3664862","DOIUrl":"https://doi.org/10.1109/LCOMM.2026.3664862","url":null,"abstract":"Estimation of the flight velocity of unmanned aerial vehicles (UAVs) in cellular networks is essential for effective resource management. In this letter, we present a novel approach for estimating the flying velocity of a cellular-connected UAV along a three-dimensional (3D) linear trajectory using handover count. The azimuth and elevation angles of the UAV, along with its velocity, ground base station (GBS) density, and the handover control parameters, all have a significant impact on the handover count for a UAV flying along a 3D linear path. To provide a realistic description of the wireless environment, we use stochastic geometry in our system model to depict the distribution of GBSs with a density of <inline-formula> <tex-math>$lambda $ </tex-math></inline-formula>. We use the observed handover count as the primary input and structure the velocity estimate problem as a maximum likelihood estimate (MLE) problem. The Cramér-Rao Lower Bound (CRLB) for the UAV estimated velocity is also determined. The proposed estimator shows statistical efficiency, as its variance closely matches the Cramér-Rao Lower Bound (CRLB). The numerical findings validate the accuracy of our approach for estimating the velocity of the UAV in a realistic cellular environment.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"30 ","pages":"1171-1174"},"PeriodicalIF":4.4,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147299513","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}

引用次数: 0

Physical-Layer Obfuscation in MIMO–SSK Systems With Imperfect CSI and Spatial Correlation 具有不完全CSI和空间相关性的MIMO-SSK系统中的物理层混淆

IF 4.4 3区计算机科学

IEEE Communications Letters Pub Date : 2026-02-16 DOI: 10.1109/LCOMM.2026.3665107

Raed Mesleh;Saud Althunibat

{"title":"Physical-Layer Obfuscation in MIMO–SSK Systems With Imperfect CSI and Spatial Correlation","authors":"Raed Mesleh;Saud Althunibat","doi":"10.1109/LCOMM.2026.3665107","DOIUrl":"https://doi.org/10.1109/LCOMM.2026.3665107","url":null,"abstract":"A computationally secure physical-layer obfuscation framework for multiple-input multiple-output (MIMO) systems based on space shift keying (SSK) is proposed in this letter, while accounting for imperfect channel estimation and spatial channel correlation. The obfuscation principle relies on exploiting channel reciprocity in time-division duplexing (TDD), whereby the transmitter and the legitimate receiver independently estimate per-antenna fading powers and construct an identical permutation vector to reorder the transmit constellation in each coherence interval. For an SSK system with <inline-formula> <tex-math>$N_{t}$ </tex-math></inline-formula> transmit antennas, the permutation is derived from the relative ordering of per-antenna channel powers. This design allows for refreshed key that avoids explicit key exchange with negligible signaling overhead. At the same time, an eavesdropper observing an independent or partially correlated channel is forced to decode using a mismatched constellation. Consequently, decoding ambiguity is significantly increased, enlarging the brute-force search space to the order of <inline-formula> <tex-math>$N_{t}!$ </tex-math></inline-formula>, which render blind constellation recovery computationally infeasible. Results demonstrate that channel estimation errors and spatial correlation impairments introduce only modest performance degradation at the legitimate receiver while strongly suppressing the eavesdropper’s achievable information rate. Performance is investigated in terms of average bit error rate (ABER), mutual information (MI), generalized mutual information (GMI), equivocation, and information leakage.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"30 ","pages":"1156-1160"},"PeriodicalIF":4.4,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147299591","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}

引用次数: 0