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Intelligent reflecting surface (IRS) has become a cost-effective solution for constructing a smart and adaptive radio environment. Most previous works on IRS have jointly designed the active and passive precoding based on perfectly or…

Information Theory · Computer Science 2024-09-24 Beixiong Zheng , Tiantian Ma , Jie Tang , Changsheng You , Shaoe Lin , Kai-Kit Wong

In this paper, we study an intelligent reflecting surface (IRS) assisted communication system with single-antenna transmitter and receiver, under imperfect channel state information (CSI). More specifically, we deal with the robust…

Signal Processing · Electrical Eng. & Systems 2024-03-01 Christos N. Efrem , Ioannis Krikidis

In this paper, we propose a new dynamic IRS beamforming framework to boost the sum throughput of an intelligent reflecting surface (IRS) aided wireless powered communication network (WPCN). Specifically, the IRS phase-shift vectors across…

Information Theory · Computer Science 2021-11-22 Qingqing Wu , Xiaobo Zhou , Wen Chen , Jun Li , Xiuyin Zhang

To meet the growing demand for data traffic, spectrum-rich optical wireless communication (OWC) has emerged as a key technological driver for the development of 6G. The resonant beam communication (RBC) system, which employs spatially…

Systems and Control · Electrical Eng. & Systems 2024-08-16 Wen Fang , Wen Chen , Qingqing Wu , Xusheng Zhu , Qiong Wu , Nan Cheng

A novel concept of Joint Source and Channel Sensing (JSCS) is introduced in the context of Cognitive Radio Sensor Networks (CRSN). Every sensor node has two basic tasks: application-oriented source sensing and ambient-oriented channel…

Information Theory · Computer Science 2014-02-25 Huazi Zhang , Zhaoyang Zhang , Xiaoming Chen , Rui Yin

One main challenge for implementing intelligent reflecting surface (IRS) aided communications lies in the difficulty to obtain the channel knowledge for the base station (BS)-IRS-user cascaded links, which is needed to design…

Information Theory · Computer Science 2023-09-18 He Sun , Weidong Mei , Lipeng Zhu , Rui Zhang

In this paper, we propose a physical layer security (PLS) framework for an intelligent reflecting surface (IRS)-assisted integrated sensing and semantic communication (ISASC) system, where a multi-antenna dual-functional semantic base…

Signal Processing · Electrical Eng. & Systems 2025-07-21 Hamid Amiriara , Mahtab Mirmohseni , Ahmed Elzanaty , Yi Ma , Rahim Tafazolli

This paper studies the computational offloading of CNN inference in dynamic multi-access edge computing (MEC) networks. To address the uncertainties in communication time and computation resource availability, we propose a novel semantic…

Image and Video Processing · Electrical Eng. & Systems 2024-01-23 Nan Li , Alexandros Iosifidis , Qi Zhang

Intelligent reflecting surfaces (IRSs) are a promising technology for enhancing coverage and spectral efficiency, both in the sub-6 GHz and the millimeter wave (mmWave) bands. Existing approaches to leverage the benefits of IRS involve the…

Information Theory · Computer Science 2023-07-03 L. Yashvanth , Chandra R. Murthy

In this paper, we investigate an intelligent reflecting surface (IRS) assisted multi-user multiple-input multiple-output (MIMO) full-duplex (FD) system. We jointly optimize the active beamforming matrices at the access point (AP) and uplink…

Signal Processing · Electrical Eng. & Systems 2021-12-07 Yanzhen Liu , Qiyu Hu , Yunlong Cai , Guanding Yu , Geoffrey Ye Li

We propose an adaptive lossy joint source-channel coding (JSCC) scheme for sending correlated sources over two-terminal discrete-memoryless two-way channels (DM-TWCs). The main idea is to couple the independent operations of the terminals…

Information Theory · Computer Science 2020-06-29 Jian-Jia Weng , Fady Alajaji , Tamás Linder

Recent advances in deep learning have led to increased interest in solving high-efficiency end-to-end transmission problems using methods that employ the nonlinear property of neural networks. These techniques, we call neural joint…

Signal Processing · Electrical Eng. & Systems 2023-06-26 Sixian Wang , Jincheng Dai , Xiaoqi Qin , Kai Niu , Ping Zhang

Channel state information (CSI) is essential to the performance optimization of intelligent reflecting surface (IRS)-aided wireless communication systems. However, the passive and frequency-flat reflection of IRS, as well as the…

Information Theory · Computer Science 2025-02-18 He Sun , Lipeng Zhu , Weidong Mei , Rui Zhang

Recent studies in joint source-channel coding (JSCC) have fostered a fresh paradigm in end-to-end semantic communication. Despite notable performance achievements, present initiatives in building semantic communication systems primarily…

Signal Processing · Electrical Eng. & Systems 2024-12-20 Guangyi Zhang , Pujing Yang , Yunlong Cai , Qiyu Hu , Guanding Yu

We consider an intelligent reflecting surface (IRS)-assisted wireless powered communication network (WPCN) in which a multi antenna power beacon (PB) sends a dedicated energy signal to a wireless powered source. The source first harvests…

Signal Processing · Electrical Eng. & Systems 2021-11-24 Ahsan Mehmood , Omer Waqar , Mahboob ur Rahman

The idea of Integrated Sensing and Communication (ISAC) offers a promising solution to the problem of spectrum congestion in future wireless networks. This paper studies the integration of intelligent reflective surfaces (IRS) with ISAC…

Signal Processing · Electrical Eng. & Systems 2023-09-06 Mahmoud AlaaEldin , Emad Alsusa , Karim G. Seddik , Christos Masouros , Iman Valiulahi

Intelligent reflecting surface (IRS) is an emerging technique to enhance the wireless communication spectral efficiency with low hardware and energy cost. In this letter, we consider the integration of IRS to an orthogonal frequency…

Information Theory · Computer Science 2019-12-04 Yifei Yang , Shuowen Zhang , Rui Zhang

Recent progress in deep learning (DL)-based joint source-channel coding (DeepJSCC) has led to a new paradigm of semantic communications. Two salient features of DeepJSCC-based semantic communications are the exploitation of semantic-aware…

Information Theory · Computer Science 2023-01-02 Yulin Shao , Deniz Gunduz

Intelligent reflecting surface (IRS) has been widely studied in recent years, it has emerged as a new technology which can reflect the incident signal by intelligently configuring the reflection elements, thus changing the signal…

Information Theory · Computer Science 2024-05-07 Jintao Luo , Sixing Yin

A communication link aided by a Reconfigurable Intelligent Surface (RIS) is studied, in which the transmitter can control the state of the RIS via a finite-rate control link. Prior work mostly assumed a fixed RIS configuration irrespective…

Information Theory · Computer Science 2019-11-22 Roy Karasik , Osvaldo Simeone , Marco Di Renzo , Shlomo Shamai