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Reconfigurable intelligent surfaces (RIS) is a promising solution to build a programmable wireless environment via steering the incident signal in fully customizable ways with reconfigurable passive elements. In this paper, we consider a…

信号处理 · 电气工程与系统科学 2019-12-30 Huayan Guo , Ying-Chang Liang , Jie Chen , Erik G. Larsson

In this paper, we investigate the joint optimal sensing and distributed Medium Access Control (MAC) protocol design problem for cognitive radio (CR) networks. We consider both scenarios with single and multiple channels. For each scenario,…

信息论 · 计算机科学 2014-04-08 Le Thanh Tan , Long Bao Le

The cloud radio access network (C-RAN) has become the foundational structure for various emerging communication paradigms, leveraging the flexible deployment of distributed access points (APs) and centralized task processing. In this paper,…

信息论 · 计算机科学 2023-11-17 Chang Wu , Hancheng Lu , Yuang Chen , Langtian Qin

Reconfigurable intelligent surface (RIS) is a promising technology for future wireless communication systems. However, the conventional RIS can only reflect the incident signal. Hence, it provides a limited coverage, as compared to a…

信号处理 · 电气工程与系统科学 2025-04-29 Sadaf Syed , Wolfgang Utschick , Michael Joham

In this work, we investigate the joint optimization of base station (BS) location, its density, and transmit power allocation to minimize the overall network operational cost required to meet an underlying coverage constraint at each user…

信息论 · 计算机科学 2017-09-01 Ganesh Prasad , Deepak Mishra , Ashraf Hossain

In this work we are concerned with the problem of link scheduling for throughput maximization in wireless networks that employ a cooperative amplify and forward (AF) protocol. To address this problem first we define the…

网络与互联网体系结构 · 计算机科学 2013-07-25 Antonios Argyriou

This paper tackles the deployment challenges of Simultaneous Transmitting and Reflecting Reconfigurable Intelligent Surface (STAR-RIS) in communication systems. Unlike existing works that use fixed deployment setups or solely optimize the…

系统与控制 · 电气工程与系统科学 2024-04-16 Bai Yan , Qi Zhao , Jin Zhang , J. Andrew Zhang

User scheduling and beamforming design are two crucial yet coupled topics for wireless communication systems. They are usually optimized separately with conventional optimization methods. In this paper, a novel cross-layer optimization…

信息论 · 计算机科学 2022-03-03 Shiwen He , Zhenyu An , Jianyue Zhu , Min Zhang , Yongming Huang , Yaoxue Zhang

This paper presents a novel approach to the joint optimization of job scheduling and data allocation in grid computing environments. We formulate this joint optimization problem as a mixed integer quadratically constrained program. To…

Optimization algorithms for wireless systems play a fundamental role in improving their performance and efficiency. However, it is known that the complexity of conventional optimization algorithms in the literature often exponentially…

信号处理 · 电气工程与系统科学 2024-07-04 Rafael Cerna Loli , Bruno Clerckx

This paper investigates the problem of model aggregation in federated learning systems aided by multiple reconfigurable intelligent surfaces (RISs). The effective integration of computation and communication is achieved by over-the-air…

信息论 · 计算机科学 2021-07-09 Wanli Ni , Yuanwei Liu , Zhaohui Yang , Hui Tian , Xuemin Shen

We propose a novel global solution algorithm for the network-constrained unit commitment problem incorporating a nonlinear alternating current model of the transmission network, which is a nonconvex mixed-integer nonlinear programming…

最优化与控制 · 数学 2018-11-27 Jianfeng Liu , Anya Castillo , Jean-Paul Watson , Carl D. Laird

Network coding and opportunistic routing are two recognized innovative ideas to improve the performance of wireless networks by utilizing the broadcast nature of the wireless medium. In the last decade, there has been considerable research…

网络与互联网体系结构 · 计算机科学 2018-03-02 Somayeh Kafaie , Yuanzhu Chen , Octavia A. Dobre , Mohamed Hossam Ahmed

In this work, we consider a method of searching of the direction of a wireless network development (the places of new access points or base stations etc.) optimized with criteria of coverage of important territories and minimum cost of…

网络与互联网体系结构 · 计算机科学 2012-09-03 Lev Kazakovtsev

This paper considers a wireless powered communication network (WPCN) with group cooperation, where two communication groups cooperate with each other via wireless power transfer and time sharing to fulfill their expected information…

信息论 · 计算机科学 2017-03-28 Ke Xiong , Chen Chen , Gang Qu , Pingyi Fan , Khaled Ben Letaief

In this paper, we consider a multihop wireless sensor network with multiple relay nodes for each hop where the amplify-and-forward scheme is employed. We present algorithmic strategies to jointly design linear receivers and the power…

信息论 · 计算机科学 2014-04-29 Tong Wang , Rodrigo C. de Lamare , Anke Schmeink

We consider the problem of jointly optimizing channel pairing, channel-user assignment, and power allocation, to maximize the weighted sum-rate, in a single-relay cooperative system with multiple channels and multiple users. Common relaying…

信息论 · 计算机科学 2016-11-18 Mahdi Hajiaghayi , Min Dong , Ben Liang

In this paper, we study the downlink multiuser scheduling problem for systems with simultaneous wireless information and power transfer (SWIPT). We design optimal scheduling algorithms that maximize the long-term average system throughput…

信息论 · 计算机科学 2015-05-26 Maryna Chynonova , Rania Morsi , Derrick Wing Kwan Ng , Robert Schober

This paper investigates the resource allocation optimization for cooperative communication with non-cooperative localization in integrated sensing and communications (ISAC)-enabled multi-unmanned aerial vehicle (UAV) cooperative networks.…

网络与互联网体系结构 · 计算机科学 2024-10-04 Yufeng Zheng , Lixin Li , Wensheng Lin , Wei Liang , Qinghe Du , Zhu Han

Intelligent reflecting surfaces (IRSs) are regarded as key enablers of next-generation wireless communications, due to their capability of customizing the wireless propagation environment. In this paper, we investigate power-efficient…

信息论 · 计算机科学 2020-05-15 Xianghao Yu , Dongfang Xu , Derrick Wing Kwan Ng , Robert Schober