arXiv - CS - Information Theory最新文献_第4页

Maximizing Spectral and Energy Efficiency in Multi-user MIMO OFDM Systems with RIS and Hardware Impairment 在具有 RIS 和硬件损伤的多用户 MIMO OFDM 系统中实现频谱和能效最大化

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.11921

Mohammad Soleymani, Ignacio Santamaria, Aydin Sezgin, Eduard Jorswieck

{"title":"Maximizing Spectral and Energy Efficiency in Multi-user MIMO OFDM Systems with RIS and Hardware Impairment","authors":"Mohammad Soleymani, Ignacio Santamaria, Aydin Sezgin, Eduard Jorswieck","doi":"arxiv-2401.11921","DOIUrl":"https://doi.org/arxiv-2401.11921","url":null,"abstract":"An emerging technology to enhance the spectral efficiency (SE) and energy\u0000efficiency (EE) of wireless communication systems is reconfigurable intelligent\u0000surface (RIS), which is shown to be very powerful in single-carrier systems.\u0000However, in multi-user orthogonal frequency division multiplexing (OFDM)\u0000systems, RIS may not be as promising as in single-carrier systems since an\u0000independent optimization of RIS elements at each sub-carrier is impossible in\u0000multi-carrier systems. Thus, this paper investigates the performance of various\u0000RIS technologies like regular (reflective and passive), simultaneously transmit\u0000and reflect (STAR), and multi-sector beyond diagonal (BD) RIS in multi-user\u0000multiple-input multiple-output (MIMO) OFDM broadcast channels (BC). This\u0000requires to formulate and solve a joint MIMO precoding and RIS optimization\u0000problem. The obtained solution reveals that RIS can significantly improve the\u0000system performance even when the number of RIS elements is relatively low.\u0000Moreover, we develop resource allocation schemes for STAR-RIS and multi-sector\u0000BD-RIS in MIMO OFDM BCs, and show that these RIS technologies can outperform a\u0000regular RIS, especially when the regular RIS cannot assist the communications\u0000for all the users.","PeriodicalId":501433,"journal":{"name":"arXiv - CS - Information Theory","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simultaneous Blind Demixing and Super-resolution via Vectorized Hankel Lift 通过矢量化汉克尔提升实现同步盲目解混和超分辨率

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.11805

Haifeng Wang, Jinchi Chen, Hulei Fan, Yuxiang Zhao, Li Yu

引用次数: 0

Massive Synchrony in Distributed Antenna Systems 分布式天线系统中的大规模同步

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.11730

Erik G. Larsson

引用次数: 0

A Survey of Advances in Optimization Methods for Wireless Communication System Design 无线通信系统设计优化方法进展概览

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.12025

Ya-Feng Liu, Tsung-Hui Chang, Mingyi Hong, Zheyu Wu, Anthony Man-Cho So, Eduard A. Jorswieck, Wei Yu

{"title":"A Survey of Advances in Optimization Methods for Wireless Communication System Design","authors":"Ya-Feng Liu, Tsung-Hui Chang, Mingyi Hong, Zheyu Wu, Anthony Man-Cho So, Eduard A. Jorswieck, Wei Yu","doi":"arxiv-2401.12025","DOIUrl":"https://doi.org/arxiv-2401.12025","url":null,"abstract":"Mathematical optimization is now widely regarded as an indispensable modeling\u0000and solution tool for the design of wireless communications systems. While\u0000optimization has played a significant role in the revolutionary progress in\u0000wireless communication and networking technologies from 1G to 5G and onto the\u0000future 6G, the innovations in wireless technologies have also substantially\u0000transformed the nature of the underlying mathematical optimization problems\u0000upon which the system designs are based and have sparked significant\u0000innovations in the development of methodologies to understand, to analyze, and\u0000to solve those problems. In this paper, we provide a comprehensive survey of\u0000recent advances in mathematical optimization theory and algorithms for wireless\u0000communication system design. We begin by illustrating common features of\u0000mathematical optimization problems arising in wireless communication system\u0000design. We discuss various scenarios and use cases and their associated\u0000mathematical structures from an optimization perspective. We then provide an\u0000overview of recent advances in mathematical optimization theory and algorithms,\u0000from nonconvex optimization, global optimization, and integer programming, to\u0000distributed optimization and learning-based optimization. The key to successful\u0000solution of mathematical optimization problems is in carefully choosing and/or\u0000developing suitable optimization algorithms (or neural network architectures)\u0000that can exploit the underlying problem structure. We conclude the paper by\u0000identifying several open research challenges and outlining future research\u0000directions.","PeriodicalId":501433,"journal":{"name":"arXiv - CS - Information Theory","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139558516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy-aware Trajectory Optimization for UAV-mounted RIS and Full-duplex Relay 无人机安装 RIS 和全双工中继的能量感知轨迹优化

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.12107

Dimitrios Tyrovolas, Nikos A. Mitsiou, Thomas G. Boufikos, Prodromos-Vasileios Mekikis, Sotiris A. Tegos, Panagiotis D. Diamantoulakis, Sotiris Ioannidis, Christos K. Liaskos, George K. Karagiannidis

{"title":"Energy-aware Trajectory Optimization for UAV-mounted RIS and Full-duplex Relay","authors":"Dimitrios Tyrovolas, Nikos A. Mitsiou, Thomas G. Boufikos, Prodromos-Vasileios Mekikis, Sotiris A. Tegos, Panagiotis D. Diamantoulakis, Sotiris Ioannidis, Christos K. Liaskos, George K. Karagiannidis","doi":"arxiv-2401.12107","DOIUrl":"https://doi.org/arxiv-2401.12107","url":null,"abstract":"In the evolving landscape of sixth-generation (6G) wireless networks,\u0000unmanned aerial vehicles (UAVs) have emerged as transformative tools for\u0000dynamic and adaptive connectivity. However, dynamically adjusting their\u0000position to offer favorable communication channels introduces operational\u0000challenges in terms of energy consumption, especially when integrating advanced\u0000communication technologies like reconfigurable intelligent surfaces (RISs) and\u0000full-duplex relays (FDRs). To this end, by recognizing the pivotal role of UAV\u0000mobility, the paper introduces an energy-aware trajectory design for\u0000UAV-mounted RISs and UAV-mounted FDRs using the decode and forward (DF)\u0000protocol, aiming to maximize the network minimum rate and enhance user\u0000fairness, while taking into consideration the available on-board energy.\u0000Specifically, this work highlights their distinct energy consumption\u0000characteristics and their associated integration challenges by developing\u0000appropriate energy consumption models for both UAV-mounted RISs and FDRs that\u0000capture the intricate relationship between key factors such as weight, and\u0000their operational characteristics. Furthermore, a joint time-division multiple\u0000access (TDMA) user scheduling-UAV trajectory optimization problem is\u0000formulated, considering the power dynamics of both systems, while assuring that\u0000the UAV energy is not depleted mid-air. Finally, simulation results underscore\u0000the importance of energy considerations in determining the optimal trajectory\u0000and scheduling and provide insights into the performance comparison of\u0000UAV-mounted RISs and FDRs in UAV-assisted wireless networks.","PeriodicalId":501433,"journal":{"name":"arXiv - CS - Information Theory","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 of Fluid Antenna-aided Backscatter Communications Systems 流体天线辅助反向散射通信系统的性能分析

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.11820

Farshad Rostami Ghadi, Masoud Kaveh, Kai-Kit Wong

引用次数: 0

Joint Near-Field Target Tracking and Communications with Full Duplex Holographic MIMO 全双工全息多输入多输出联合近场目标跟踪与通信

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.12036

Ioannis Gavras, George C. Alexandropoulos

引用次数: 0

Uncoded Storage Coded Transmission Elastic Computing with Straggler Tolerance in Heterogeneous Systems 异构系统中的无编码存储编码传输弹性计算与滞后容忍度

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.12151

Xi Zhong, Joerg Kliewer, Mingyue Ji

{"title":"Uncoded Storage Coded Transmission Elastic Computing with Straggler Tolerance in Heterogeneous Systems","authors":"Xi Zhong, Joerg Kliewer, Mingyue Ji","doi":"arxiv-2401.12151","DOIUrl":"https://doi.org/arxiv-2401.12151","url":null,"abstract":"In 2018, Yang et al. introduced a novel and effective approach, using maximum\u0000distance separable (MDS) codes, to mitigate the impact of elasticity in cloud\u0000computing systems. This approach is referred to as coded elastic computing.\u0000Some limitations of this approach include that it assumes all virtual machines\u0000have the same computing speeds and storage capacities, and it cannot tolerate\u0000stragglers for matrix-matrix multiplications. In order to resolve these\u0000limitations, in this paper, we introduce a new combinatorial optimization\u0000framework, named uncoded storage coded transmission elastic computing (USCTEC),\u0000for heterogeneous speeds and storage constraints, aiming to minimize the\u0000expected computation time for matrix-matrix multiplications, under the\u0000consideration of straggler tolerance. Within this framework, we propose optimal\u0000solutions with straggler tolerance under relaxed storage constraints. Moreover,\u0000we propose a heuristic algorithm that considers the heterogeneous storage\u0000constraints. Our results demonstrate that the proposed algorithm outperforms\u0000baseline solutions utilizing cyclic storage placements, in terms of both\u0000expected computation time and storage size.","PeriodicalId":501433,"journal":{"name":"arXiv - CS - Information Theory","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ORBGRAND: Achievable Rate for General Bit Channels and Application in BICM ORBGRAND：通用比特信道的可实现速率及在 BICM 中的应用

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.11901

Zhuang Li, Wenyi Zhang

引用次数: 0

The complexity of elliptic normal bases 椭圆法基的复杂性

arXiv - CS - Information Theory Pub Date : 2024-01-22 DOI: arxiv-2401.11872

Daniel Panario, Mohamadou Sall, Qiang Wang

引用次数: 0