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The exponential growth of mobile data traffic is driving the deployment of dense wireless networks, which will not only impose heavy backhaul burdens, but also generate considerable power consumption. Introducing caches to the wireless…

信息论 · 计算机科学 2017-07-20 Xi Peng , Yuanming Shi , Jun Zhang , Khaled B. Letaief

Reconfigurable Intelligent Surfaces (RISs) are recently attracting a wide interest due to their capability of tuning wireless propagation environments in order to increase the system performance of wireless networks. In this paper, a…

信息论 · 计算机科学 2021-03-23 Stefano Buzzi , Carmen D'Andrea , Alessio Zappone , Maria Fresia , Yong-Ping Zhang , Shulan Feng

This work focuses on a large-scale multi-cell multi-user MIMO system in which $L$ base stations (BSs) of $N$ antennas each communicate with $K$ single-antenna user equipments. We consider the design of the linear precoder that minimizes the…

信息论 · 计算机科学 2016-04-27 Luca Sanguinetti , Romain Couillet , Merouane Debbah

With over-deployed network infrastructures, network densification is shown to hinder the improvement of user experience and system performance. In this paper, we adopt multi-antenna techniques to overcome the bottleneck and investigate the…

信息论 · 计算机科学 2017-07-20 Junyu Liu , Min Sheng , Jiandong Li

The evolution of high-performance computing is associated with the growth of energy consumption. Performance of cluster computes (is increased via rising in performance and the number of used processors, GPUs, and coprocessors. An increment…

分布式、并行与集群计算 · 计算机科学 2022-12-23 E. A. Kiselev , P. N. Telegin , B. M. Shabanov

Multi-cell coordinated beamforming (MCBF), where multiple base stations (BSs) collaborate with each other in the beamforming design for mitigating the inter-cell interference, has been a subject drawing great attention recently. Most MCBF…

信息论 · 计算机科学 2015-10-28 Chao Shen , Tsung-Hui Chang , Kun-Yu Wang , Zhengding Qiu , Chong-Yung Chi

User scheduling and hybrid precoding in wideband multi-antenna systems have never been learned jointly due to the challenges arising from the massive user combinations on resource blocks (RBs) and the shared analog precoder among RBs. In…

信号处理 · 电气工程与系统科学 2025-07-25 Shengjie Liu , Chenyang Yang , Shengqian Han

Consider the single-group multicast beamforming problem, where multiple users receive the same data stream simultaneously from a single transmitter. The problem is NP-hard and all existing algorithms for the problem either find suboptimal…

信息论 · 计算机科学 2017-06-07 Cheng Lu , Ya-Feng Liu

In this paper, we investigate for the first time the dynamic power allocation and decoding order at the base station (BS) of two-user uplink (UL) cooperative non-orthogonal multiple access (C-NOMA)-based cellular networks. In doing so, we…

信息论 · 计算机科学 2022-03-25 Mohamed Elhattab , Mohamed Amine Arfaoui , Chadi Assi , Ali Ghrayeb , Marwa Qaraqe

As spiking-based deep learning inference applications are increasing in embedded systems, these systems tend to integrate neuromorphic accelerators such as $\mu$Brain to improve energy efficiency. We propose a $\mu$Brain-based scalable…

神经与进化计算 · 计算机科学 2021-11-24 M. Lakshmi Varshika , Adarsha Balaji , Federico Corradi , Anup Das , Jan Stuijt , Francky Catthoor

With the increasing number of base stations (BSs) and network densification in 5G, interference management using link scheduling and power control are vital for better utilization of radio resources. However, the complexity of solving link…

网络与互联网体系结构 · 计算机科学 2018-11-20 Shenghe Xu , Pei Liu , Ran Wang , Shivendra S. Panwar

We consider a user-centric co-operative cellular network, where base stations (BSs) close to a mobile co-operate to detect its signal using a (joint) linear minimum-mean-square-error receiver. The BSs are at arbitrary positions and mobiles…

信息论 · 计算机科学 2018-02-14 Siddhartan Govindasamy , Itsik Bergel

We study the problem of user-scheduling and resource allocation in distributed multi-user, multiple-input multiple-output (MIMO) networks implementing user-centric clustering and non-coherent transmission. We formulate a weighted sum-rate…

信息论 · 计算机科学 2021-02-08 Hussein A. Ammar , Raviraj Adve , Shahram Shahbazpanahi , Gary Boudreau , Kothapalli Srinivas

In this paper, a novel joint design of beamforming and power allocation is proposed for a multi-cell multiuser multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA) network. In this network, base stations (BSs) adopt…

信息论 · 计算机科学 2018-06-13 Xiaofang Sun , Nan Yang , Shihao Yan , Zhiguo Ding , Derrick Wing Kwan Ng , Chao Shen , Zhangdui Zhong

Explosive data traffic growth leads to a continuous surge in capacity demands across mobile networks. In order to provision high network capacity, small cell base stations (SCBSs) are widely deployed. Owing to the close proximity to mobile…

网络与互联网体系结构 · 计算机科学 2014-09-30 Tao Han , Nirwan Ansari

Dramatic mobile data traffic growth has spurred a dense deployment of small cell base stations (SCBSs). Small cells enhance the spectrum efficiency and thus enlarge the capacity of mobile networks. Although SCBSs consume much less power…

网络与互联网体系结构 · 计算机科学 2014-12-18 Tao Han , Nirwan Ansari

In this paper, we pioneer the study of physical-layer security in heterogeneous networks (HetNets). We investigate secure communications in a two-tier downlink HetNet, which comprises one macrocell and several femtocells. Each cell has…

信息论 · 计算机科学 2015-06-23 Tiejun Lv , Hui Gao , Shaoshi Yang

Communication in high frequencies such as millimeter wave and terahertz suffer from high path-loss and intense shadowing which necessitates beamforming for reliable data transmission. On the other hand, at high frequencies the channels are…

机器学习 · 计算机科学 2021-02-23 Abbas Khalili , Sundeep Rangan , Elza Erkip

This paper considers the quality-of-service (QoS)-based joint beamforming and compression design problem in the downlink cooperative cellular network, where multiple relay-like base stations (BSs), connected to the central processor via…

信息论 · 计算机科学 2025-04-25 Xilai Fan , Ya-Feng Liu , Liang Liu , Tsung-Hui Chang

This work presents a new spiking neural network (SNN)-based approach for user equipment-base station (UE-BS) association in non-terrestrial networks (NTNs). With the introduction of UAV's in wireless networks, the system architecture…

信号处理 · 电气工程与系统科学 2025-08-06 Vasileios Kouvakis , Stylianos E. Trevlakis , Ioannis Arapakis , Alexandros-Apostolos A. Boulogeorgos