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This paper considers cooperative spectrum sensing algorithms for Cognitive Radios which focus on reducing the number of samples to make a reliable detection. We develop an energy efficient detector with low detection delay using…

Information Theory · Computer Science 2013-08-29 Jithin K. Sreedharan , Vinod Sharma

The main challenges of cognitive radio include spectrum sensing at the physical (PHY) layer to detect the activity of primary users and spectrum sharing at the medium access control (MAC) layer to coordinate access among coexisting…

Networking and Internet Architecture · Computer Science 2010-07-05 Jaeok Park , Mihaela van der Schaar

Massive data exist among user local platforms that usually cannot support deep neural network (DNN) training due to computation and storage resource constraints. Cloud-based training schemes provide beneficial services but suffer from…

Machine Learning · Computer Science 2018-01-15 Meng Li , Liangzhen Lai , Naveen Suda , Vikas Chandra , David Z. Pan

Private Information Retrieval (PIR) schemes allow a user to retrieve a record from the server without revealing any information on which record is being downloaded. In this paper, we consider PIR schemes where the database is stored using…

Information Theory · Computer Science 2018-05-21 Chatdanai Dorkson , Siaw-Lynn Ng

Private Computation (PC), recently introduced by Sun and Jafar, is a generalization of Private Information Retrieval (PIR) in which a user wishes to privately compute an arbitrary function of data stored across several servers. We construct…

Information Theory · Computer Science 2018-01-16 David Karpuk

The successful operation of cognitive radio (CR) between CR transmitter and CR receiver (CR link) relies on reliable spectrum sensing. To network CRs requires spectrum sensing at CR transmitter and further information regarding the spectrum…

Information Theory · Computer Science 2009-07-17 Sheng-Yuan Tu , Kwang-Cheng Chen

Private information retrieval (PIR) is the problem of retrieving as efficiently as possible, one out of $K$ messages from $N$ non-communicating replicated databases (each holds all $K$ messages) while keeping the identity of the desired…

Information Theory · Computer Science 2017-07-18 Hua Sun , Syed A. Jafar

The spectrum is a scarce resource and must utilize efficiently, the cognitive radio is a prospective solution for underutilized spectrum. The spectrum sensing is a key functionality to alleviate interference of secondary user to primary.…

Networking and Internet Architecture · Computer Science 2013-03-12 Dilip S. Aldar

In this paper, a Cognitive Radio Network (CRN) based on artificial intelligence is proposed to distribute the limited radio spectrum resources more efficiently. The CRN framework can analyze the time-sensitive signal data close to the…

Signal Processing · Electrical Eng. & Systems 2017-11-29 Jingyang Lu , Lun Li , Genshe Chen , Dan Shen , Khanh Pham , Erik Blasch

The explosion of data collection has raised serious privacy concerns in users due to the possibility that sharing data may also reveal sensitive information. The main goal of a privacy-preserving mechanism is to prevent a malicious third…

Machine Learning · Computer Science 2022-05-17 Mohammadhadi Shateri , Francisco Messina , Pablo Piantanida , Fabrice Labeau

We consider the problem of private information retrieval (PIR) from MDS coded databases with colluding servers, i.e., MDS-TPIR. In the MDS-TPIR setting, $M$ files are stored across $N$ servers, where each file is stored independently using…

Information Theory · Computer Science 2026-03-12 Rui Sun , Ran Tao , Jingke Xu , Yiwei Zhang

In cognitive radio networks (CRN), Out-of-Band (OoB) spectrum sensing provides seamless communication. Cognitive radio (CR) users, so called secondary users (SUs), should avoid interference with primary users (PUs), the owner of the…

Networking and Internet Architecture · Computer Science 2014-07-15 Yalew Zelalem Jembre , Young-June Choi

Cognitive radio (CR) is an effective solution to improve the spectral efficiency (SE) of wireless communications by allowing the secondary users (SUs) to share spectrum with primary users. Meanwhile, intelligent reflecting surface (IRS),…

Signal Processing · Electrical Eng. & Systems 2019-12-24 Jie Yuan , Ying-Chang Liang , Jingon Joung , Gang Feng , Erik G. Larsson

Interoperability remains the key problem in multi-discipline collaboration based on building information modeling (BIM). Although various methods have been proposed to solve the technical issues of interoperability, such as data sharing and…

Cryptography and Security · Computer Science 2024-11-22 Jianping Zhang , Qiang Liu , Zhenzhong Hu , Jiarui Lin , Fangqiang Yu

A private information retrieval (PIR) protocol guarantees that a user can privately retrieve files stored in a database without revealing any information about the identity of the requested file. Existing information-theoretic PIR protocols…

Information Theory · Computer Science 2021-02-02 Hsuan-Yin Lin , Siddhartha Kumar , Eirik Rosnes , Alexandre Graell i Amat , Eitan Yaakobi

We investigate a cognitive radio network in which a primary user (PU) may cooperate with a cognitive radio user (i.e., a secondary user (SU)) for transmissions of its data packets. The PU is assumed to be a buffered node operating in a…

Networking and Internet Architecture · Computer Science 2017-10-27 Ahmed El Shafie , Tamer Khattab , Amr El-Keyi

$X$-secure and $T$-private information retrieval (XSTPIR) is a form of private information retrieval where data security is guaranteed against collusion among up to $X$ servers and the user's privacy is guaranteed against collusion among up…

Information Theory · Computer Science 2019-03-05 Zhuqing Jia , Hua Sun , Syed A. Jafar

Cybersecurity and privacy are of the utmost importance for safe, reliable operation of the electric grid. It is well known that the increased connectivity/interoperability between all stakeholders (e.g., utilities, suppliers, and consumers)…

Systems and Control · Computer Science 2026-05-14 Jin Dong , Teja Kuruganti , Seddik Djouadi , Mohammed Olama , Yaosuo Xue

Data streams collected from multiple sources are rarely independent. Values evolve over time and influence one another across sequences. These correlations improve prediction in healthcare, finance, and smart-city control yet violate the…

Cryptography and Security · Computer Science 2025-11-25 Yifan Luo , Meng Zhang , Jin Xu , Junting Chen , Jianwei Huang

We consider the problem of cache-aided multi-user private information retrieval (MuPIR). In this problem, $N$ independent files are replicated across $S \geq 2$ non-colluding servers. There are $K$ users, each equipped with cache memory…

Information Theory · Computer Science 2022-12-27 Kanishak Vaidya , B Sundar Rajan
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