M2m band biography generator
Note: This page lists all seminars organized over the years with colleagues at Telecom ParisTech and more recently at LINCS. Having served the seminar for more than 10years, I happily passed the honour to other colleagues – so this page is mostly ment for historical reasons.
To cope with blockchain inconsistencies, like double-spending, developers started building upon Byzantine fault-tolerant (BFT) consensus. At first it seems reasonable because consensus can be effective at totally ordering transactions into a chain. Unfortunately, these two problems are different. In short, the blockchain problem aims at totally ordering blocks of transactions issued by a large set of potentially misbehaving internet machines, whereas the consensus problem aims at deciding upon one of the values proposed by typically fewer but non-misbehaving machines. In this talk, I will describe the blockchain consensus problem, a variant of the classic consensus definition, that was recently defined for blockchains. I will present the Red Belly Blockchain, a blockchain that does not use BFT consensus as a black box but rather solves the blockchain consensus problem and illustrate empirically the benefits it offers.
Vincent Gramoli is the Head of the Concurrent Systems Research Group at the University of Sydney and a Senior Researcher at Data61-CSIRO. He received his PhD from University of Rennes and his Habilitation from UPMC Sorbonne University. Prior to this, he was affiliated with Cornell University and EPFL. His research interest is in distributed computing.
Yi Ma, Chunmei Xu, Zhenyu Liu, Siqi Zhang, Rahim Tafazolli (2025)Importance-Aware Source-Channel Coding for Multi-Modal Task-Oriented Semantic Communication This paper explores the concept of information importance in multi-modal task-oriented semantic communication systems, emphasizing the need for high accuracy and efficiency to fulfill task-specific objectives. At the transmitter, generative AI (GenAI) is employed to partition visual data objects into semantic segments, each representing distinct, task-relevant information. These segments are subsequently encoded into tokens, enabling precise and adaptive transmission control. Building on this framework, we present importance-aware source and channel coding strategies that dynamically adjust to varying levels of significance at the segment, token, and bit levels. The proposed strategies prioritize high fidelity for essential information while permitting controlled distortion for less critical elements, optimizing overall resource utilization. Furthermore, we address the source-channel coding challenge in semantic multiuser systems, particularly in multicast scenarios, where segment importance varies among receivers. To tackle these challenges, we propose solutions such as rate-splitting coded progressive transmission, ensuring flexibility and robustness in task-specific semantic communication. Denis Kozlov, Mahtab Mirmohseni, Rahim Tafazolli (2024)Secure Semantic Communication over Wiretap Channel, In: 2024 IEEE Information Theory Workshop (ITW), Shenzhen, Chinapp. 37-42 IEEE DOI: 10.1109/ITW61385.2024.10807039 Semantic communication is a new paradigm for information transmission that integrates the essential meaning (semantics) of the message into the communication process. However, like in classic wireless communications, the open nature of wireless channels poses security risks for semantic communications. In this paper, we characterize information-theoretic limits by Andre Smit, Quanta Technology, USA As distribution feeder automation (DFA) systems evolved, communication system advances significantly improved the speed at which power restoration actions can be performed. This improvement in restoration times has a positive impact on reliability KPIs. DFA Categories based on Performance The first category of feeder automation is depicted in Figure 1. One is where the operator decides how to isolate and restore power based on loading and fault information received from the field. Two centralized applications determine and recommend switching actions to the control center operator. Three is automated switching executed by smart applications. The fourth category includes protection and DFA. These systems will use protection functions to isolate the fault from the distribution network, identify the location of the fault and perform isolation, restoration, and test actions. These systems are decentralized. Protection devices that control the switchgear are used for DFA. The devices will automatically open or close the switchgear. The DFA categories have different requirements for communication systems that will support the applications. DFA systems require two-way communication. Distribution Feeder Automation Systems Performance Distribution feeder automation categories: 1. Manual control room switching 2. Application recommended manual control room switching 3. Application automated control room switching 4. Application automated field device switching and protection The operating characteristics of the automation systems provide a basis for selecting a communication system. The switching actions of a DFA to perform the fault isolation and power restoration are referred to as Fault Locate Isolate and Service Restoration (FLISR). The performance of the different system’s FLISR switching actions is ranked in Table 1. Communication systems must support the DFA system’s p Embodiment One or more embodiments are now described with reference to the drawings, wherein identical reference is used to refer to phase all the time Same unit.In description below, many details are elaborated for illustrative purposes, to provide for each embodiment It is thorough to understand.It will be evident that can put into practice each in different combinations and in the case of without these details Individual embodiment (and beling not applied to any specific networked environment or standard). In order to provide network connection to additional base station equipment, communication cell (such as microcellulor and macrocellular) link is arrived The return network of the network equipment of core network also correspondingly extends.Similarly, in order to distributing antenna system provide network Connection, it is desirable to have base station equipment and the spread communication system of its spaced antenna phase link.Guided wave communication system can be provided To allow network connection replace, increased or additional, and waveguide coupled system can be provided so as in transmission medium (line or other conductors operated for example as single-wire transmission line, as the dielectric substance of waveguide operation, and/or it is logical Cross other transmission mediums that other modes operation carrys out the transmission of guide electromagnetic waves) on transmission and/or receive guided wave (such as surface Ripple) communication. In one exemplary embodiment, the waveguide coupler being used in waveguide coupled system can be by dielectric material Material or other low-loss and insulating bodies (such as polytetrafluoroethylene (PTFE), polyethylene etc.) are made, or can by it is conductive (such as metal, It is nonmetallic etc.) material is made, or be made up of any combination of previous materials." elec
Professor Rahim Tafazolli FREng
CN107005279A - Guided wave transmission equipment and its application method with diversity - Google Patents