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Intelligent reflective surface (IRS) technology is emerging as a promising performance enhancement technique for next-generation wireless networks. Hence, we investigate the physical layer security of the downlink in IRS-aided…

信号处理 · 电气工程与系统科学 2020-11-09 Zhiqing Tang , Tianwei Hou , Yuanwei Liu , Jiankang Zhang , Lajos Hanzo

One key metric for physical layer security is the secrecy capacity. This is the maximum rate that a system can transmit with perfect secrecy. For a Multiple Input Multiple Output (MIMO) system (a newer technology for 5G, 6G and beyond) the…

信息论 · 计算机科学 2022-10-03 Jennifer Chakravarty , Oliver Johnson , Robert Piechocki

Physical layer security offers an efficient means to decrease the risk of confidential information leakage through wiretap links. In this paper, we address the physical-layer security in a cooperative wireless subnetwork that includes a…

网络与互联网体系结构 · 计算机科学 2019-10-21 Saeed Vahidian , Sajad Hatamnia , Benoit Champagne

In Part I of this two-part paper on confidential communication over wireless channels, we studied the fundamental security limits of quasi-static fading channels from the point of view of outage secrecy capacity with perfect and imperfect…

信息论 · 计算机科学 2007-07-13 Matthieu Bloch , Joao Barros , Miguel R. D. Rodrigues , Steven W. McLaughlin

This paper analyzes the unified performance of energy detection (ED) of spectrum sensing (SS) over generalized fading channels in cognitive radio (CR) networks. The detective performance of SS schemes will be obviously affected by fading…

信息论 · 计算机科学 2018-01-01 He Huang , Chaowei Yuan

We consider a Gaussian multiple access channel with $K$ transmitters, a (intended) receiver and an external eavesdropper. The transmitters wish to reliably communicate with the receiver while concealing their messages from the eavesdropper.…

密码学与安全 · 计算机科学 2015-04-23 Parisa Babaheidarian , Somayeh Salimi

In this work we give a $(n,n)$-threshold protocol for sequential secret sharing of quantum information for the first time. By sequential secret sharing we refer to a situation where the dealer is not having all the secrets at the same time,…

量子物理 · 物理学 2016-08-11 Maharshi Ray , Sourav Chatterjee , Indranil Chakrabarty

In this paper, we study the problem of summation evaluation of secrets. The secrets are distributed over a network of nodes that form a ring graph. Privacy-preserving iterative protocols for computing the sum of the secrets are proposed,…

密码学与安全 · 计算机科学 2020-04-15 Yang Liu , Qingchen Liu , Xiong Zhang , Shuqi Qin , Xiaoping Lei

We derive fundamental accuracy limits for distributed localization when a fusion center has access only to independently rate-distortion (RD)-optimally compressed versions of multi-sensor observations, under a line-of-sight propagation…

信息论 · 计算机科学 2026-03-31 Amir Weiss

The presented research proposes the $\alpha$-modification of the Beaulieu-Xie shadowed fading channel for wireless communications. For the assumed model the closed-form analytical description of the basic statistical characteristics is…

信息论 · 计算机科学 2023-07-25 Aleksey S. Gvozdarev

This paper studies a scalar Gaussian wiretap channel where instead of an average input power constraint, we consider a peak amplitude constraint on the input. The goal is to obtain insights into the secrecy-capacity and the structure of the…

信息论 · 计算机科学 2021-11-24 Luca Barletta , Alex Dytso

Current security techniques can be implemented either by requiring a secret key exchange or depending on assumptions about the communication channels. In this paper, we show that, by using a physical layer technique known as artificial…

信息论 · 计算机科学 2013-11-05 Shuiyin Liu , Yi Hong , Emanuele Viterbo

Covert communication is the undetected transmission of sensitive information over a communication channel. In wireless communication systems, channel impairments such as signal fading present challenges in the effective implementation and…

信息论 · 计算机科学 2025-09-29 Amir Reza Ramtin , Dennis Goeckel , Don Towsley

This paper technically explores the secrecy rate $\Lambda$ and a maximisation problem over the concave version of the secrecy outage probability (SOP) as $\mathop{{\rm \mathbb{M}ax}}\limits_{\Delta } {\rm \; } \mathbb{P}\mathscr{r} \big(…

信息论 · 计算机科学 2022-06-15 Makan Zamanipour

The possibility of using squeezed states in the recently suggested unidimensional continuous-variable quantum key distribution based on a single quadrature modulation is addressed. It is shown that squeezing of the signal states expands the…

量子物理 · 物理学 2018-09-26 Vladyslav C. Usenko

The standard closed form lower bound on $\sigma$ for providing $(\epsilon, \delta)$-differential privacy by adding zero mean Gaussian noise with variance $\sigma^2$ is $\sigma > \Delta\sqrt {2}(\epsilon^{-1}) \sqrt {\log \left(…

密码学与安全 · 计算机科学 2021-01-22 Staal A. Vinterbo

Channels of satellite communication are usually modeled as Rician fading channels with very large Rician factor or Gaussian channels. Therefore, when a legitimate user is close to an eavesdropping user, the legitimate channel is…

信息论 · 计算机科学 2018-08-16 Shuai Han , Xiangxue Tai , Weixiao Meng , Cheng Li

Data-parallel SGD is the de facto algorithm for distributed optimization, especially for large scale machine learning. Despite its merits, communication bottleneck is one of its persistent issues. Most compression schemes to alleviate this…

神经与进化计算 · 计算机科学 2024-02-07 Ashok Vardhan Makkuva , Marco Bondaschi , Thijs Vogels , Martin Jaggi , Hyeji Kim , Michael C. Gastpar

Statistical characterization of the signal-to-interference-plus-noise ratio (SINR) via its cumulative distribution function (CDF) is ubiquitous in a vast majority of technical contributions in the area of cellular networks since it boils…

信息论 · 计算机科学 2017-06-05 Imène Trigui , Sofiène Affes , Ben Liang

This paper studies randomly spread code-division multiple access (CDMA) and multiuser detection in the large-system limit using the replica method developed in statistical physics. Arbitrary input distributions and flat fading are…

信息论 · 计算机科学 2007-07-13 Dongning Guo , Sergio Verdu