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Intelligent reflecting surface (IRS) is envisioned to have abundant applications in future wireless networks by smartly reconfiguring the signal propagation for performance enhancement. Specifically, an IRS consists of a large number of…

Information Theory · Computer Science 2018-09-13 Qingqing Wu , Rui Zhang

Prospective mobile networks will be heterogeneous multi-tier networks, with different classes of base stations (BS) installed dependent on user demand. Multi-tier networks enable operators to enhance system capacity and coverage through…

Signal Processing · Electrical Eng. & Systems 2022-08-30 Mobasshir Mahbub , Raed M. Shubair

As a means to control wireless propagation environments, the use of emerging and novel intelligent reflecting surfaces (IRS) is envisioned to enhance and broaden many applications in future wireless networks. This paper is concerned with a…

Signal Processing · Electrical Eng. & Systems 2020-03-23 Dian-Wu Yue , Ha H. Nguyen , Yu Sun

Intelligent reflecting surface (IRS) is an emerging technology to enhance the spectral and energy efficiency of wireless communications cost-effectively. This letter considers a new multi-IRS aided wireless network where a cascaded…

Information Theory · Computer Science 2021-08-12 Weidong Mei , Rui Zhang

Compared to traditional intelligent reflecting surfaces(IRS), aerial IRS (AIRS) has unique advantages, such as more flexible deployment and wider service coverage. However, modeling AIRS in the channel presents new challenges due to their…

Information Theory · Computer Science 2023-09-06 Shaoyi Liu , Nan Ma , Yaning Chen , Ke Peng , Dongsheng Xue

Intelligent reflecting surface (IRS) has recently been emerging as an enabler for smart radio environment in which passive antenna arrays can be used to actively tailor/control the radio propagation. With multiple IRSs being launched to…

Signal Processing · Electrical Eng. & Systems 2021-12-09 Tu V. Nguyen , Diep N. Nguyen

Intelligent reflecting surface (IRS) has recently been envisioned to offer unprecedented massive multiple-input multiple-output (MIMO)-like gains by deploying large-scale and low-cost passive reflection elements. By adjusting the reflection…

Signal Processing · Electrical Eng. & Systems 2020-07-15 Gui Zhou , Cunhua Pan , Hong Ren , Kezhi Wang , Arumugam Nallanathan

Intelligent reflecting surface (IRS) is envisioned as a revolutionary technology for future wireless communication systems since it can intelligently change radio environment and integrate it into wireless communication optimization.…

Signal Processing · Electrical Eng. & Systems 2021-01-05 Hongyu Li , Wenhao Cai , Yang Liu , Ming Li , Qian Liu , Qingqing Wu

This paper investigates a multi-intelligent reflecting surface (IRS) aided integrated sensing and communication (ISAC) system, where multiple IRSs are strategically deployed not only to assist the communication from a multi-antenna base…

Information Theory · Computer Science 2025-06-30 Guangji Chen , Qingqing Wu , Shihang Lu , Meng Hua , Wen Chen

In this paper, we consider a distributed multiple-input multiple-output (MIMO) radar which radiates waveforms with non-ideal cross- and auto-correlation functions and derive a novel subspace-based procedure to detect and localize multiple…

Signal Processing · Electrical Eng. & Systems 2022-12-09 Yangming Lai , Luca Venturino , Emanuele Grossi , Wei Yi

In this work, we investigate the use of backscattered mm-wave radio signals for the joint tracking and recognition of identities of humans as they move within indoor environments. We build a system that effectively works with multiple…

Signal Processing · Electrical Eng. & Systems 2021-02-19 Jacopo Pegoraro , Francesca Meneghello , Michele Rossi

Intelligent reflecting surface (IRS) is envisioned to be widely applied in future wireless networks. In this paper, we investigate a multi-user communication system assisted by cooperative IRS devices with the capability of energy…

Multiagent Systems · Computer Science 2022-03-29 Jie Zhang , Jun Li , Yijin Zhang , Qingqing Wu , Xiongwei Wu , Feng Shu , Shi Jin , Wen Chen

Intelligent reflecting surface (IRS) is an emerging technology for future wireless communications including 5G and especially 6G. It consists of a large 2D array of (semi-)passive scattering elements that control the electromagnetic…

Signal Processing · Electrical Eng. & Systems 2021-04-21 Gilderlan T. de Araújo , André L. F. de Almeida , Rémy Boyer

In this paper, the performance of a binary phase shift keyed random time-hopping impulse radio system with pulse-based polarity randomization is analyzed. Transmission over frequency-selective channels is considered and the effects of…

Information Theory · Computer Science 2009-11-11 Sinan Gezici , Hisashi Kobayashi , H. Vincent Poor , Andreas F. Molisch

We analyze the performance of coherent impulsive-radio (IR) ultra-wideband (UWB) channel in presence of the interference generated by concurrent transmissions of the systems with the same impulsive radio. We derive a novel algorithm, using…

Information Theory · Computer Science 2007-07-13 Bozidar Radunovic , Jean-Yves Le Boudec , Raymond Knopp

Intelligent Reflecting Surface (IRS) has been recently proposed as a promising solution to enhance the spectral and energy efficiency of future wireless networks by tuning a massive number of low-cost passive reflecting elements and thereby…

Information Theory · Computer Science 2020-02-27 Jiangbin Lyu , Rui Zhang

This paper focuses on studying orthogonal and non-orthogonal multiple access in intelligent reflecting surface (IRS)-aided systems. Unlike most prior works assuming continuous phase shifts, we employ the practical setup where only a finite…

Information Theory · Computer Science 2023-03-16 Wei Jiang , Hans Dieter Schotten

We propose a framework for the derivation and evaluation of distributed iterative algorithms for receiver cooperation in interference-limited wireless systems. Our approach views the processing within and collaboration between receivers as…

Information Theory · Computer Science 2012-04-18 Mihai-Alin Badiu , Carles Navarro Manchón , Vasile Bota , Bernard Henri Fleury

An iterative detection and decoding (IDD) scheme is proposed for multiuser multiple-antenna systems assisted by an active or a passive Reconfigurable Intelligent Surface (RIS). The proposed approach features an IDD strategy that…

Information Theory · Computer Science 2024-12-17 R. Porto , R. C. de Lamare

Indexed modulation (IM) is an evolving technique that has become popular due to its ability of parallel data communication over distinct combinations of transmission entities. In this article, we first provide a comprehensive survey of…

Information Theory · Computer Science 2023-02-16 Rohit Singh , Aryan Kaushik , Wonjae Shin , George C. Alexandropoulos , Mesut Toka , Marco Di Renzo