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Blockchain is a technology that is often used to share data and assets. However, in the decentralized ecosystem, blockchain-based systems can be utilized to share information and assets without the traditional barriers associated with solo…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-04-23 Viktor Valaštín , Roman Bitarovský , Kristián Košťál , Ivan Kotuliak

Dynamic spectrum access is essential for radiocommunication and its limited spectrum resources. The key element of dynamic spectrum access systems is effective spectrum occupancy detection. In many cases, machine learning algorithms improve…

Networking and Internet Architecture · Computer Science 2024-03-07 Łukasz Kułacz

Decentralized Finance (DeFi), propelled by Blockchain technology, has revolutionized traditional financial systems, improving transparency, reducing costs, and fostering financial inclusion. However, transaction activities in these systems…

Cryptography and Security · Computer Science 2023-12-22 Hou-Wan Long , Xiongfei Zhao , Yain-Whar Si

Decentralized Online Social Networks (DOSNs) have been proposed as an alternative solution to the current centralized Online Social Networks (OSNs). Online Social Networks are based on centralized architecture (e.g., Facebook, Twitter, or…

Cryptography and Security · Computer Science 2019-10-29 Mohsin Ur Rahman , Fabrizio Baiardi , Barbara Guidi , Laura Ricci

The problem of a single point of failure in centralized systems poses a great challenge to the stability of such systems. Meanwhile, the tamperability of data within centralized systems makes users reluctant to trust and use centralized…

Cryptography and Security · Computer Science 2025-04-22 Ka Wai Wu

The 7.3 GHz (350 MHz bandwidth) Earth Observation Satellite (EOS) band, while not protected, is used for Passive Sea Surface Temperature (P-SST) measurements that provide important data for weather forecasts, coastal disaster prevention,…

Signal Processing · Electrical Eng. & Systems 2024-12-17 Elliot Eichen , Arvind Aradhya , Oren Collaco

Historical fragmentation in spectrum access models accentuates the need for novel concepts that allow for efficient sharing of already available but underutilized spectrum. The emerging Licensed Shared Access (LSA) regulatory framework is…

Networking and Internet Architecture · Computer Science 2016-11-18 Aleksei Ponomarenko-Timofeev , Alexander Pyattaev , Sergey Andreev , Yevgeni Koucheryavy , Markus Mueck , Ingolf Karls

We investigate revenue maximization problems in auctions for dynamic spectrum access. We consider the frequency division and spread spectrum methods of dynamic spectrum sharing. In the frequency division method, a primary spectrum user…

Optimization and Control · Mathematics 2011-05-31 Ali Kakhbod , Ashutosh Nayyar , Demosthenis Teneketzis

We present the development and characterization of a generic, reconfigurable, low-cost ($<$ 350 USD) software-defined digital receiver system (DRS) for temporal correlation measurements in atomic spin ensembles. We demonstrate the use of…

Instrumentation and Detectors · Physics 2021-01-26 V. Mugundhan , Maheswar Swar , Subhajit Bhar , Saptarishi Chaudhuri

Direct-sequence spread-spectrum (DSSS) is commonly used to mitigate the effect of jamming and to operate under an adversary receiver's thermal noise floor in order to avoid signal detection. Unfortunately, the discrete nature and unique…

Signal Processing · Electrical Eng. & Systems 2018-07-20 Ismail Shakeel

Chainspace is a decentralized infrastructure, known as a distributed ledger, that supports user defined smart contracts and executes user-supplied transactions on their objects. The correct execution of smart contract transactions is…

Cryptography and Security · Computer Science 2017-08-15 Mustafa Al-Bassam , Alberto Sonnino , Shehar Bano , Dave Hrycyszyn , George Danezis

In the Smart Grid with Renewable Energy Resources (RERs), the Residential Units (RUs) with Distributed Energy Resources (DERs) are considered to be both power consumers and suppliers. Specifically, RUs with excessive renewable generations…

Cryptography and Security · Computer Science 2018-10-26 Zhitao Guan , Jing Li , Liehuang Zhu , Zijian Zhang , Xiaojiang Du , Mohsen Guizani

Increased penetration of Distributed Energy Resources (DER) and Renewable Energy Systems (RES) transforming the conventional distribution grid into a transactive framework supervised by a distribution system operator (DSO). Although the…

Systems and Control · Electrical Eng. & Systems 2023-09-06 Arnab Dey , Vivek Khatana , Ankur Mani , Murti V. Salapaka

Advancements in wireless and mobile technologies, including 5G advanced and the envisioned 6G, are driving exponential growth in wireless devices. However, this rapid expansion exacerbates spectrum scarcity, posing a critical challenge.…

Machine Learning · Computer Science 2025-07-17 Ngoc Duy Pham , Thusitha Dayaratne , Viet Vo , Shangqi Lai , Sharif Abuadbba , Hajime Suzuki , Xingliang Yuan , Carsten Rudolph

Pre-shared keys (PSK) have been widely used in network security. Nonetheless, existing PSK solutions are not scalable. Moreover, whenever a new user joins a network, PSK requires an existing user to get a new key before they are able to…

Cryptography and Security · Computer Science 2024-11-26 Jie Lin , Hoi-Kwong Lo , Jacob Johannsson , Mattia Montagna , Manfred von Willich

Public blockchains implement a fee mechanism to allocate scarce computational resources across competing transactions. Most existing fee market designs utilize a joint, fungible unit of account (e.g., gas in Ethereum) to price otherwise…

Optimization and Control · Mathematics 2022-11-04 Theo Diamandis , Alex Evans , Tarun Chitra , Guillermo Angeris

The blockchain technology empowers secure, trustless, and privacy-preserving trading with cryptocurrencies. However, existing blockchain-based trading platforms only support trading cryptocurrencies with digital assets (e.g., NFTs).…

Cryptography and Security · Computer Science 2022-06-16 Shuhao Zheng , Junliang Luo , Erqun Dong , Can Chen , Xue Liu

Direct-sequence spread spectrum (DSSS) has been recognized as an effective jamming resilient technique. However, the effectiveness of DSSS relies on the use of either pre-shared unique secret keys or a bank of public codes, which can be…

Information Theory · Computer Science 2018-03-21 Jay Prakash , Chenxi Liu , Jemin Lee , Tony Q. S. Quek

The derivative of token standard of Ethereum blockchain, termed as Non Fungible Token is distinguishable token. These tokens are bound with digital properties that provide them unique identification which helps in fulfilling the aim of…

Cryptography and Security · Computer Science 2025-08-05 Priyanshu Lohar , Kiran Rathi

Blockchain is a decentralized system that allows transaction transmission and storage according to the roles of the Consensus algorithm and Smart contracts. Non-fungible tokens (NFTs) consolidate the best characteristics of blockchain…

Cryptography and Security · Computer Science 2022-09-07 Subhash Shankar Pandey , Tadasha Dash , Prasanta K. Panigrahi , Ahmed Farouk