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We propose and study the cooperative MIMO architecture to enable and to improve the secrecy transmissions between clusters of mobile devices in the presence of an eavesdropper with certain location constraint. The cooperative MIMO system in…

Information Theory · Computer Science 2019-01-08 Zhong Zheng , Zygmunt Haas , Mario Kieburg

Sensors embedded in mobile smart devices can monitor users' activity with high accuracy to provide a variety of services to end-users ranging from precise geolocation, health monitoring, and handwritten word recognition. However, this…

Cryptography and Security · Computer Science 2022-05-16 Rahat Masood , Wing Yan Cheng , Dinusha Vatsalan , Deepak Mishra , Hassan Jameel Asghar , Mohamed Ali Kaafar

Recent work has shown that cell phone mobility data has the unique potential to create accurate models for human mobility and consequently the spread of infected diseases. While prior studies have exclusively relied on a mobile network…

Cryptography and Security · Computer Science 2022-06-14 Alexandros Bampoulidis , Alessandro Bruni , Lukas Helminger , Daniel Kales , Christian Rechberger , Roman Walch

Secure routing protocols are proposed for the vehicular ad hoc networks. The protocols integrate the security authentication process with the Location-Aided Routing (LAR) protocol to support Wi-Fi Direct communications between the vehicles.…

Cryptography and Security · Computer Science 2020-05-01 Ma'en Saleh , Liang Dong

Recent years have seen rising needs for location-based services in our everyday life. Aside from the many advantages provided by these services, they have caused serious concerns regarding the location privacy of users. An adversary such as…

Cryptography and Security · Computer Science 2018-05-17 Sina Shaham , Ming Ding , Bo Liu , Zihuai Lin , Jun Li

A wide range of approaches have been applied to manage the spread of global pandemic events such as COVID-19, which have met with varying degrees of success. Given the large-scale social and economic impact coupled with the increasing time…

Computers and Society · Computer Science 2020-09-29 Rachit Agarwal , Abhik Banerjee

Immersive viewing is emerging as the next interface evolution for human-computer interaction. A truly wireless immersive application necessitates immense data delivery with ultra-low latency, raising stringent requirements for…

Information Theory · Computer Science 2021-04-14 Hamidreza Bakhshzad Mahmoodi , MohammadJavad Salehi , Antti Tölli

Several applications require computing distances between different people. For example,this is required if we want to obtain the close contacts of people in case of and epidemic,or when restraining orders are imposed by a judge. However,…

Cryptography and Security · Computer Science 2020-04-17 Cristina Romero-Tris , David Megías

We design a scalable algorithm to privately generate location heatmaps over decentralized data from millions of user devices. It aims to ensure differential privacy before data becomes visible to a service provider while maintaining high…

Cryptography and Security · Computer Science 2022-06-28 Eugene Bagdasaryan , Peter Kairouz , Stefan Mellem , Adrià Gascón , Kallista Bonawitz , Deborah Estrin , Marco Gruteser

An increasing number of mobile applications share location-dependent information, from collaborative applications and social networks to location-based games. For such applications, peer-to-peer architectures where mobile devices share…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-05-04 Luís M. Silva , Frederico Aleixo , Albert van der Linde , João Leitão , Nuno Preguiça

Frequency estimation, a.k.a. histograms, is a workhorse of data analysis, and as such has been thoroughly studied under differentially privacy. In particular, computing histograms in the \emph{local} model of privacy has been the focus of a…

Data Structures and Algorithms · Computer Science 2024-09-05 Clément L. Canonne , Abigail Gentle

Whisker-like touch sensors offer unique advantages for short-range perception in environments where visual and long-range sensing are unreliable, such as confined, cluttered, or low-visibility settings. This paper presents a framework for…

Applied Physics · Physics 2026-01-12 Prasanna K. Routray , Basak Sakcak , Steven M. LaValle , Manivannan M

Several contact tracing solutions have been proposed and implemented all around the globe to combat the spread of COVID-19 pandemic. But, most of these solutions endanger the privacy rights of the individuals and hinder their widespread…

Cryptography and Security · Computer Science 2020-08-18 Priyanka Singh , Abhishek Singh , Gabriel Cojocaru , Praneeth Vepakomma , Ramesh Raskar

Advances in smart devices has witnessed major developments in many mobile applications such as Android applications. These smart devices normally interconnect to the internet using wireless technology and applications using the TFTP…

Cryptography and Security · Computer Science 2014-09-02 Mohd Anuar Mat Isa , Habibah Hashim , Syed Farid Syed Adnan , Jamalul-lail Ab Manan , Ramlan Mahmod

Describes a near-linear-time algorithm for a variant of Huffman coding, in which the letters may have non-uniform lengths (as in Morse code), but with the restriction that each word to be encoded has equal probability. [See also ``Huffman…

Data Structures and Algorithms · Computer Science 2015-06-02 Mordecai Golin , Neal E. Young

In limiting the rapid spread of highly infectious diseases like Covid-19 means to immediately identify individuals who had been in contact with a newly diagnosed infected person have proven to be important. Such potential victims can go…

Social and Information Networks · Computer Science 2020-04-01 Adam Wolisz

Due to the large bandwidth available, millimeter-Wave (mmWave) bands are considered a viable opportunity to significantly increase the data rate in cellular and wireless networks. Nevertheless, the need for beamforming and directional…

Systems and Control · Electrical Eng. & Systems 2022-05-23 Sara Khosravi , Hossein S. Ghadikolaeiy , Jens Zander , Marina Petrova

Location-based services offer immense utility, but also pose significant privacy risks. In response, we propose LocPIR, a novel framework using homomorphic encryption (HE), specifically the TFHE scheme, to preserve user location privacy…

Cryptography and Security · Computer Science 2024-07-30 Joon Soo Yoo , Mi Yeon Hong , Ji Won Heo , Kang Hoon Lee , Ji Won Yoon

In research paper "Accurate estimation of the target location of object with energy constraint & Adaptive Update Algorithms to Save Data" one of the central issues in sensor networks is track the location, of moving object which have…

Distributed, Parallel, and Cluster Computing · Computer Science 2011-08-08 Vijay Bhaskar Semwal , K Susheel Kumar , Vinay S Bhaskar , Meenakshi Sati

Due to the COVID 19 pandemic, smartphone-based proximity tracing systems became of utmost interest. Many of these systems use BLE signals to estimate the distance between two persons. The quality of this method depends on many factors and,…

Networking and Internet Architecture · Computer Science 2024-10-28 Eric Lanfer , Thomas Hänel , Roland van Rijswijk-Deij , Nils Aschenbruck
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