Physical Communication最新文献_第5页

Combined BP-MF algorithm for cluster sparse non-stationary channel of massive MIMO 联合BP-MF算法用于大规模MIMO的聚类稀疏非平稳信道

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-19 DOI: 10.1016/j.phycom.2025.102692

Xinhua Lu , Yiwen Zhu , Linlin Mo , Yan Xiao , Xiangchuan Gao

引用次数: 0

Sum throughput maximization of coupled phase-shift STAR-RIS aided RSMA system in FBL transmission 耦合相移STAR-RIS辅助RSMA系统在FBL传输中的总吞吐量最大化

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-19 DOI: 10.1016/j.phycom.2025.102688

Mengmeng Wang , Xin Su , Bei Liu , Xibin Xu

{"title":"Sum throughput maximization of coupled phase-shift STAR-RIS aided RSMA system in FBL transmission","authors":"Mengmeng Wang , Xin Su , Bei Liu , Xibin Xu","doi":"10.1016/j.phycom.2025.102688","DOIUrl":"10.1016/j.phycom.2025.102688","url":null,"abstract":"<div><div>The proliferation of diverse mission-critical applications places an urgent demand on elevated data rates, reduced latency and superior reliability for next-generation ultra-reliable low latency communication (URLLC) services. The simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) and rate-splitting multiple access (RSMA) technologies have emerged as potential technologies for future wireless networks to support greater coverage, stronger interference management and higher system performance. In this paper, we investigate the coupled phase-shift STAR-RIS aided RSMA system to enhance finite block length (FBL) transmission. Specifically, we focus on the optimization problem of sum throughput maximization via the joint optimization of the common rate allocation (CRA), beamforming matrix, and the transmission and reflection coefficients (TARC) matrix. Owing to the non-convexity of the optimization problem and the strong coupling of the variables, we employ the concept of alternating optimization (AO) to decompose the original problem into two easily solvable sub-problems: beamforming matrix and CRA optimization at base station (BS), TARC matrix optimization at STAR-RIS, which are resolved through the penalty function method and successive convex approximations (SCA). Simulation results validate that the proposed coupled phase-shift STAR-RIS aided RSMA scheme substantially boosts sum throughput relative to the benchmark methods, while satisfying the URLLC requirements.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102688"},"PeriodicalIF":2.0,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

An optimized end-to-end data transmission scheme for long-range unmanned aerial vehicles based on resonant-motion 基于共振运动的远程无人机端到端数据传输优化方案

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-17 DOI: 10.1016/j.phycom.2025.102689

Zichao Qin , Hai Wang , Zhen Qin

{"title":"An optimized end-to-end data transmission scheme for long-range unmanned aerial vehicles based on resonant-motion","authors":"Zichao Qin , Hai Wang , Zhen Qin","doi":"10.1016/j.phycom.2025.102689","DOIUrl":"10.1016/j.phycom.2025.102689","url":null,"abstract":"<div><div>Unmanned aerial vehicles (UAVs) have revolutionized large-scale inspections and wide-area reconnaissance tasks by significantly diminishing manpower and material expenditures. Yet, their low deployment density in vast areas impedes real-time end-to-end data transmission—a pivotal concern we aim to resolve. We introduce an innovative UAV cooperative end-to-end data transmission approach, leveraging the resonant motion concept(in the following context, we will consistently refer to it as RM.). By capitalizing on the rhythmic back-and-forth movement of idle UAVs, our method facilitates long-distance data transmission, turning what was once a disadvantage into an advantage. To further improve energy efficiency, our approach optimizes the count of idle UAVs required and modulates the transmission power during the data transmission process. Geared specifically towards video streaming data transmission requirements, our method outperforms conventional strategies like carrying and forwarding, as well as multi-hop routing. Our proposed approach has demonstrated enhancements in latency by 15% and 9.6% respectively, while increasing energy consumption by 6.8% and 15.4% respectively. Moreover, our system exhibits superior overall transmission energy efficiency when compared to other multi-hop transmission schemes, particularly in scenarios with constrained transmission rates and large data video streaming. In essence, we offer a trailblazing solution that addresses a key issue in UAV deployment while significantly augmenting their efficiency and effectiveness.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102689"},"PeriodicalIF":2.0,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A low complexity and multi-resolution structure for Space–Time–Frequency sensing and communication system 一种用于空时频传感与通信系统的低复杂度多分辨率结构

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-16 DOI: 10.1016/j.phycom.2025.102690

Manjun Lu, Wei Wang, Xiaoming Wu, Xunqiang Zhou

引用次数: 0

A Novel PAPR reduction method using Schur decomposition in CAZAC transform based precoded OFDM for Beyond 5G Applications 一种基于CAZAC变换的超5G预编码OFDM中Schur分解的PAPR降低方法

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-13 DOI: 10.1016/j.phycom.2025.102681

N. Bharathiraja , Suseela Vappangi , T. Deepa , V.V. Mani

{"title":"A Novel PAPR reduction method using Schur decomposition in CAZAC transform based precoded OFDM for Beyond 5G Applications","authors":"N. Bharathiraja , Suseela Vappangi , T. Deepa , V.V. Mani","doi":"10.1016/j.phycom.2025.102681","DOIUrl":"10.1016/j.phycom.2025.102681","url":null,"abstract":"<div><div>In the recent times, the demand for better spectral efficiency and lower power consumption has increased significantly. As a result, effective methods for reducing the peak-to-average power ratio (PAPR) are crucial. Orthogonal frequency division multiplexing (OFDM) is a fundamental technology in 5G and Beyond 5G (B5G) systems. To enhance its performance, implementing an efficient PAPR reduction technique is necessary. Based upon these grounds, this paper introduces a novel PAPR reduction method that integrates Schur decomposition with Walsh–Hadamard Transform (WHT) and Constant Amplitude Zero Auto-Correlation (CAZAC) transform in a precoded OFDM system. The mathematical expression of the time-domain signal for the proposed Schur-based WHT＋CAZAC-OFDM system is derived. The simulation results of this work unveil that the proposed SCHUR＋WHT＋CAZAC-based OFDM system significantly minimizes PAPR by exhibiting a remarkable PAPR reduction of 8.736 dB and 9.86 dB compared to conventional OFDM over AWGN and Rayleigh Fading channels. In addition, the proposed system enhances spectral containment, and reduces spectral regrowth with substantial improvement in power spectral density (PSD) performance. A comparative analysis with singular value decomposition (SVD) and QR decomposition-based approaches is also performed. The results indicate that all three techniques effectively reduce PAPR. However, the SCHUR＋WHT＋CAZAC method achieves a better balance between computational complexity and overall performance. These advancements make it highly suitable for various B5G applications, including ultra-reliable low-latency communications (URLLC), massive machine-type communications (mMTC), and enhanced mobile broadband (eMBB), where high data rates, low latency, and reliable connectivity are crucial.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102681"},"PeriodicalIF":2.0,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

JCANet: Multi-domain federated lightweight self-attention CSI feedback network JCANet：多域联合轻量级自关注CSI反馈网络

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-12 DOI: 10.1016/j.phycom.2025.102682

Jianhong Xiang , Zilu Li , Wei Liu

{"title":"JCANet: Multi-domain federated lightweight self-attention CSI feedback network","authors":"Jianhong Xiang , Zilu Li , Wei Liu","doi":"10.1016/j.phycom.2025.102682","DOIUrl":"10.1016/j.phycom.2025.102682","url":null,"abstract":"<div><div>In frequency division duplex (FDD) massive MIMO systems, as the number of antennas increases, the amount of downlink channel state information (CSI) data fed back from the user’s end increases significantly, many deep learning (DL)-based CSI compression feedback methods show their potential. Existing networks mostly extract channel features in the angle-delay domain through complex convolutional structures, neglecting the frequency correlation among subcarriers, which makes it difficult to fully capture global features with long-distance dependencies. Moreover, these approaches suffer from high complexity. To address these issues, we propose a multi-domain joint lightweight self-attention feedback network (JCANet). First, a multi-domain joint strategy is proposed at the encoder side. On the basis of designing angular-delay domain convolution to extract local features of channel information, a frequency domain convolution (FCv) branch is used to span multiple subcarriers to capture the global features of the channel, achieving multi-domain extraction of channel information features. Then, a lightweight multi-scale cross-layer self-attention (LMSCA) module is proposed on the decoder side, which utilizes the multi-scale information of the CSI matrix to establish correlations and long-range dependencies between input sequences under low complexity. Simulation results show that JCANet achieves higher performance with lower computational complexity compared to other lightweight networks.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102682"},"PeriodicalIF":2.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Eavesdropping defense scheme in C-V2X using deep learning and reinforcement learning 基于深度学习和强化学习的C-V2X窃听防御方案

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-12 DOI: 10.1016/j.phycom.2025.102673

Shuang Gu , Minjie Wei , Longxia Liao , Junhui Zhao

{"title":"Eavesdropping defense scheme in C-V2X using deep learning and reinforcement learning","authors":"Shuang Gu , Minjie Wei , Longxia Liao , Junhui Zhao","doi":"10.1016/j.phycom.2025.102673","DOIUrl":"10.1016/j.phycom.2025.102673","url":null,"abstract":"<div><div>The broadcast nature of wireless signals allows malicious eavesdroppers to stealthily intercept and disrupt communication links, while dynamic spectrum competition in dense scenarios further degrades the performance of legitimate links. This paper investigates a collaborative security framework that integrates physical-layer dynamic authentication and deep reinforcement learning (DRL) for vehicular networks with multiple eavesdropping vehicles. To mitigate spoofing risks, we design a Long Short-Term Memory (LSTM)-based authentication model that verifies legitimate vehicle identities by extracting time-varying channel characteristics, thereby reducing communication risks with unauthorized vehicles. Upon ensuring legitimate identities, we propose a joint optimization scheme for transmit power control and channel selection. To address dynamic channel fading and high vehicle mobility, a Double Deep Q-Learning (DDQN) algorithm is developed to adaptively allocate limited spectral resources for maximizing secrecy capacity. Simulation results demonstrate that our LSTM-DDQN anti-eavesdropping model outperforms the related methods in system secrecy rate and V2V energy efficiency.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102673"},"PeriodicalIF":2.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Performance analysis and implementation of biased MC-PPM for optical energy transfer and communication system 偏置MC-PPM光能传输与通信系统的性能分析与实现

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-11 DOI: 10.1016/j.phycom.2025.102684

Min-Jin Kim , Tae-Ju Lee , Na-Young Hwang , Pankaj Singh , Sung-Yoon Jung

{"title":"Performance analysis and implementation of biased MC-PPM for optical energy transfer and communication system","authors":"Min-Jin Kim , Tae-Ju Lee , Na-Young Hwang , Pankaj Singh , Sung-Yoon Jung","doi":"10.1016/j.phycom.2025.102684","DOIUrl":"10.1016/j.phycom.2025.102684","url":null,"abstract":"<div><div>This paper investigates a new modulation technique, Biased multi-coded pulse position modulation (Biased MC-PPM), suitable for simultaneous lightwave information and power transfer (SLIPT) systems to overcome the limitations of energy harvesting efficiency in conventional light emitting diode (LED)-based modulation schemes. This technique utilizes direct current biasing to control the dimming levels and is compared with multi-coded variable pulse position modulation (MC-VPPM) and <span><math><mi>M</mi></math></span>-ary variable pulse position modulation (VPPM), which use pulse width modulation for dimming control. In Biased MC-PPM, the binary signal is first converted into an orthogonal code, and then the final signal is generated using a Biased PPM mapper. The generated signal is transmitted through an LED and received by a solar cell. Compared to MC-VPPM and <span><math><mi>M</mi></math></span>-ary VPPM, the Biased MC-PPM demonstrates slightly lower communication performance, but it proves to have higher energy transfer efficiency in visible light communication and free-space optical environments. Therefore, Biased MC-PPM presents a promising solution for SLIPT systems, where energy efficiency is a primary concern.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102684"},"PeriodicalIF":2.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Moment based analysis over generalized fading accompanying hypergeometric and exponential functions with diversity 具有多样性的超几何函数和指数函数伴随广义衰落的矩分析

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-11 DOI: 10.1016/j.phycom.2025.102672

Puspraj Singh Chauhan , Paresh Chandra Sau , Sandeep Kumar , Ankit Jain , Sonia Aïssa , Vimal Bhatia

引用次数: 0

Capture effect-based optimal access class barring for IoT communications 物联网通信基于捕获效果的最佳访问类限制

IF 2 4区计算机科学

Physical Communication Pub Date : 2025-04-10 DOI: 10.1016/j.phycom.2025.102680

Waqas Tariq Toor , Imran Javed , Yawar Rehman , Muhammad Idrees , Zubair Mehmood

{"title":"Capture effect-based optimal access class barring for IoT communications","authors":"Waqas Tariq Toor , Imran Javed , Yawar Rehman , Muhammad Idrees , Zubair Mehmood","doi":"10.1016/j.phycom.2025.102680","DOIUrl":"10.1016/j.phycom.2025.102680","url":null,"abstract":"<div><div>For 5G and beyond-5G systems, a key requirement is the support for massive Internet-of-Things (IoTs) and Machine Type Communication (MTC) devices that are integrated in the network for the purpose of data collection and reporting in various applications. During the random-access protocol of LTE-A/5G, large number of IoT devices access the network through preambles (PA) resulting in congestion. This is due to large likelihood of selection of same PA by more than one IoT device, which is called collision. Access Class Barring (ACB) scheme is used to control the congestion by limiting access of the devices to the network thereby reducing chances of collision. However, success is still possible if the two or more devices select the same PA, and are decoded correctly by the gNodeB (gNB), which is called capture effect. In this paper, we incorporate the effect of capture probability in the system model of IoT devices, and derive the optimal transmission probability, called as optimal ACB factor. Using this optimal ACB factor, a modified success probability is computed, and its performance is compared with the success probability based on conventional ACB factor. A Bayesian strategy is also proposed to estimate the number of backlogged IoT devices based on the information of idle, success, and collided PAs. Moreover, we also derive important performance parameters like total service time (TST) and access delay, and conduct extensive simulations to verify the analysis. Simulation results show significant improvement in TST and access delay if capture effect probability is used, and this scheme can be used to achieve the latency requirements of 5G.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"71 ","pages":"Article 102680"},"PeriodicalIF":2.0,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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