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We study the downlink linear precoder design problem in a multi-cell dense heterogeneous network (HetNet). The problem is formulated as a general sum-utility maximization (SUM) problem, which includes as special cases many practical…

Information Theory · Computer Science 2015-10-22 Mingyi Hong , Qiang Li , Ya-Feng Liu

Dual-function-radar-communication (DFRC) is a promising candidate technology for next-generation networks. By integrating hybrid analog-digital (HAD) beamforming into a multi-user millimeter-wave (mmWave) DFRC system, we design a new…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Xin Jin , Tiejun Lv , Wei Ni , Zhipeng Lin , Qiuming Zhu , Ekram Hossain , H. Vincent Poor

In this paper, we focus on intelligent reflecting surface (IRS) assisted multi-antenna communications with transceiver hardware impairments encountered in practice. In particular, we aim to maximize the received signal-to-noise ratio (SNR)…

Information Theory · Computer Science 2020-10-22 Hong Shen , Wei Xu , Shulei Gong , Chunming Zhao , Derrick Wing Kwan Ng

We address distributed learning problems over undirected networks. Specifically, we focus on designing a novel ADMM-based algorithm that is jointly computation- and communication-efficient. Our design guarantees computational efficiency by…

Machine Learning · Computer Science 2026-01-21 Xiaoxing Ren , Nicola Bastianello , Karl H. Johansson , Thomas Parisini

Reconfigurable intelligent surface (RIS) as an emerging cost-effective technology can enhance the spectrum- and energy-efficiency of wireless networks. In this paper, we consider an RIS-aided green edge inference system, where the inference…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Sheng Hua , Yong Zhou , Kai Yang , Yuanming Shi

Unmanned aerial vehicles (UAVs) have attracted significant interest recently in assisting wireless communication due to their high maneuverability, flexible deployment, and low cost. This paper considers a multi-UAV enabled wireless…

Information Theory · Computer Science 2018-01-10 Qingqing Wu , Yong Zeng , Rui Zhang

Cooperative relay systems have become an active area of research during recent years since they help cellular networks to enhance data rate and coverage. In this paper we develop a method to jointly optimize precoding matrices for…

Information Theory · Computer Science 2013-08-09 Ehsan Zandi , Guido Dartmann , Gerd Ascheid , Rudolf Mathar

Cognitive radio (CR) and integrated sensing and communication (ISAC) are both critical technologies for the sixth generation (6G) wireless networks. However, their interplay has yet to be explored. To obtain the mutual benefits between CR…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Yongqing Xu , Yong Li , Tony Q. S. Quek

This paper considers a $K$-user multiple-input single-output (MISO) interference channels for simultaneous wireless information and power transfer (SWIPT), where each multi-antenna transmitter serves a single-antenna receiver per user pair.…

Information Theory · Computer Science 2017-10-31 Feng Wang , Tao Peng , Yongwei Huang

The amalgamation of cell-free networks and reconfigurable intelligent surface (RIS) has become a prospective technique for future sixth-generation wireless communication systems. In this paper, we focus on the precoding and beamforming…

Information Theory · Computer Science 2023-11-23 Peng Zhang , Jiayi Zhang , Huahua Xiao , Xiaodan Zhang , Derrick Wing Kwan Ng , Bo Ai

This paper explores the idea of using redirective reconfigurable intelligent surfaces (RedRIS) to overcome many of the challenges associated with the conventional reflective RIS. We develop a framework for jointly optimizing the switching…

Information Theory · Computer Science 2024-06-04 Bamelak Tadele , Faouzi Bellili , Amine Mezghani , Md Jawwad Chowdhury , Haseeb Ur Rehman

Computation off-loading in mobile edge computing (MEC) systems constitutes an efficient paradigm of supporting resource-intensive applications on mobile devices. However, the benefit of MEC cannot be fully exploited, when the communications…

Signal Processing · Electrical Eng. & Systems 2020-05-14 Tong Bai , Cunhua Pan , Yansha Deng , Maged Elkashlan , Arumugam Nallanathan , Lajos Hanzo

This paper explores the multi-access distributed computing (MADC) model, a novel distributed computing framework where mapper and reducer nodes are distinct entities. Unlike traditional MapReduce frameworks, MADC leverages coding-theoretic…

Information Theory · Computer Science 2025-08-08 Shanuja Sasi , Onur Günlü

This paper introduces a novel multi-user mobile edge computing (MEC) scheme facilitated by the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) and the unmanned aerial vehicle (UAV). Unlike existing…

Information Theory · Computer Science 2024-09-16 Han Xiao , Xiaoyan Hu , Weile Zhang , Wenjie Wang , Kai-Kit Wong , Kun Yang

In this paper, we investigate resource allocation algorithm design for intelligent reflecting surface (IRS)-assisted multiuser cognitive radio (CR) systems. In particular, an IRS is deployed to mitigate the interference caused by the…

Information Theory · Computer Science 2020-03-03 Dongfang Xu , Xianghao Yu , Robert Schober

Multi-tier computing can enhance the task computation by multi-tier computing nodes. In this paper, we propose a cell-free massive multiple-input multiple-output (MIMO) aided computing system by deploying multi-tier computing nodes to…

Networking and Internet Architecture · Computer Science 2023-04-17 Kunlun Wang , Dusit Niyato , Wen Chen , Arumugam Nallanathan

Distributed optimization concerns the optimization of a common function in a distributed network, which finds a wide range of applications ranging from machine learning to vehicle platooning. Its key operation is to aggregate all local…

Information Theory · Computer Science 2022-04-15 Zhenyi Lin , Yi Gong , Kaibin Huang

We consider a linear precoder design for an underlay cognitive radio multiple-input multiple-output broadcast channel, where the secondary system consisting of a secondary base-station (BS) and a group of secondary users (SUs) is allowed to…

Information Theory · Computer Science 2016-11-17 Van-Dinh Nguyen , Le-Nam Tran , Trung Q. Duong , Oh-Soon Shin , Ronan Farrell

This work demonstrates the effectiveness of a novel simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) in Full-Duplex (FD) aided communication system. The objective is to minimize the total transmit power…

Signal Processing · Electrical Eng. & Systems 2022-03-15 Yiru Wang , Pengxin Guan , Hongkang Yu , Yuping Zhao

In this paper, we consider the downlink transmission of a multi-antenna base station (BS) supported by an active simultaneously transmitting and reconfigurable intelligent surface (STAR-RIS) to serve single-antenna users via simultaneous…