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Intelligent reflecting surface (IRS) is envisioned as a promising solution for controlling radio propagation environments in future wireless systems. In this paper, we propose a distributed intelligent reflecting surface (IRS) assisted…

Signal Processing · Electrical Eng. & Systems 2020-11-02 Yashuai Cao , Tiejun Lv , Wei Ni

The performance of wireless communication systems is fundamentally constrained by random and uncontrollable wireless channels. Recently, reconfigurable intelligent surfaces (RIS) has emerged as a promising solution to enhance wireless…

Signal Processing · Electrical Eng. & Systems 2023-12-29 Xiaohao Mo , Lin Gui , Kai Ying , Xichao Sang , Xiaqing Diao

It's well-known that in a traditional discrete-time autonomous linear systems, the eigenvalues of the weigth (system) matrix solely determine the stability of the system. If the spectral radius of the system matrix is larger than 1, then…

Data Analysis, Statistics and Probability · Physics 2009-03-18 Zekeriya Uykan

Intelligent Reflecting Surface (IRS) has been a promising solution to enhance wireless networks both spectral-efficiently and energy-efficiently. This paper considers an IRS-assisted the Internet of Things network for massive connectivity.…

Signal Processing · Electrical Eng. & Systems 2019-11-28 Shuhao Xia , Yuanming Shi

Inter-cell interference (ICI) is one of the most critical factors affecting performance of cellular networks. In this paper, we investigate a joint link adaptation and user scheduling problem for multi-cell downlink employing HARQ…

Information Theory · Computer Science 2015-03-12 Su Min Kim , Bang Chul Jung , Dan Keun Sung

We analyze the achievable rate in interference-free wireless networks with physical layer fading channels and orthogonal multiple access. As a starting point, the point-to-point channel is considered. We find the optimal physical and…

Information Theory · Computer Science 2016-11-18 Tao Cui , Tracey Ho , Joerg Kliewer

We analyze a class of Signal-to-Interference-and-Noise-Ratio (SINR) random graphs. These random graphs arise in the modeling packet transmissions in wireless networks. In contrast to previous studies on the SINR graphs, we consider both a…

Probability · Mathematics 2013-02-05 Francois Baccelli , Bartlomiej Blaszczyszyn , Mir Omid Haji Mirsadeghi

In this work, we characterize the outage probability (OP) of an intelligent reflecting surface (IRS) assisted multi-user multiple-input-single-output (MU-MISO) communication system. Using a two-step approximation method, we approximate the…

Information Theory · Computer Science 2022-08-09 Lakshmi Jayalal , Shashank Shekhar , Athira Subhash , Sheetal Kalyani

This paper investigates robust and secure multiuser multiple-input single-output (MISO) downlink communications assisted by a self-sustainable intelligent reflection surface (IRS), which can simultaneously reflect and harvest energy from…

Information Theory · Computer Science 2021-08-05 Shaokang Hu , Zhiqiang Wei , Yuanxin Cai , Chang Liu , Derrick Wing Kwan Ng , Jinhong Yuan

The interference in wireless networks is temporally correlated, since the node or user locations are correlated over time and the interfering transmitters are a subset of these nodes. For a wireless network where (potential) interferers…

Information Theory · Computer Science 2013-09-12 Martin Haenggi , Roxana Smarandache

Interference Management is a vast topic present in many disciplines. The majority of wireless standards suffer the drawback of interference intrusion and the network efficiency drop due to that. Traditionally, interference management has…

Signal Processing · Electrical Eng. & Systems 2019-06-10 Pol Henarejos , Miguel Ángel Vázquez , Ana Isabel Pérez-Neira

Intelligent reflecting surface (IRS)-assisted wireless communication is widely deemed a key technology for 6G systems. The main challenge in deploying an IRS-aided terahertz (THz) link, though, is the severe propagation losses at high…

Information Theory · Computer Science 2021-08-19 Konstantinos Dovelos , Stylianos D. Assimonis , Hien Quoc Ngo , Boris Bellalta , Michail Matthaiou

Although the fifth-generation (5G) technologies will significantly improve the spectrum and energy efficiency of today's wireless communication networks, their high complexity and hardware cost as well as increasingly more energy…

Information Theory · Computer Science 2019-09-02 Qingqing Wu , Rui Zhang

Existing cellular network analyses, and even simulations, typically use the standard path loss model where received power decays like $\|x\|^{-\alpha}$ over a distance $\|x\|$. This standard path loss model is quite idealized, and in most…

Information Theory · Computer Science 2015-03-17 Xinchen Zhang , Jeffrey G. Andrews

To enhance coverage and improve service continuity, satellite-terrestrial integrated radio access network (STIRAN) has been seen as an essential trend in the development of 6G. However, there is still a lack of theoretical analysis on its…

Information Theory · Computer Science 2024-04-16 Yaohua Sun , Ruiwen Li

Intelligent reflecting surface (IRS) has the potential to significantly enhance the network performance by reconfiguring the wireless propagation environments. It is however difficult to obtain the accurate downlink channel state…

Information Theory · Computer Science 2020-05-18 Wenzhi Fang , Min Fu , Yuanming Shi , Yong Zhou

A multiuser multiple-input multiple-output wireless communication system is analytically studied, which operates with the aid of a reconfigurable intelligent surface (RIS). The intermediate RIS is equipped with multiple elements and…

Information Theory · Computer Science 2021-10-12 Nikolaos I. Miridakis , Theodoros A. Tsiftsis , Guanghua Yang , Panagiotis A. Karkazis , Helen C. Leligou

Location information is often used as a proxy to guarantee the performance of a wireless communication link. However, localization errors can result in a significant mismatch with the guarantees, particularly detrimental to users operating…

Integrated sensing and communication (ISAC) has recently been considered as a promising approach to save spectrum resources and reduce hardware cost. Meanwhile, as information security becomes increasingly more critical issue, government…

Signal Processing · Electrical Eng. & Systems 2023-02-15 Mianyi Zhang , Yinghui He , Yunlong Cai , Guanding Yu , Naofal Al-Dhahir

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
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