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- Federated Stream Processing Support for Real-Time Business Intelligence Applications
- This paper describes the MaxStream federated stream processing architecture to support real-time business intelligence applications. MaxStream builds on and extends the SAP MaxDB relational database system in order to provide a federator over multiple underlying stream processing engines and databases. The paper shows preliminary results on usefulness and performance of...
- Tags: ETH Zurich, SAP AG, RDBMS, MaxStream, Pricing, Business Intelligence, Tools & Techniques, Databases, Enterprise Software, Marketing, Software, Data Management, Management
- White papers 2009-07-01
- Time Synchronization in Ad Hoc Networks
- Ubiquitous computing environments are typically based upon ad hoc networks of mobile computing devices. These devices may be equipped with sensor hardware to sense the physical environment and may be attached to real world artifacts to form so-called smart things. The data sensed by various smart things can then be...
- Tags: ETH Zurich, Advertisement, Environment, Mobile Computing, Ubiquitous Computing Environment
- White papers 2009-01-01
- Flow-Level Characteristics of Spam and Ham
- Despite a large amount of effort devoted in the past years trying to limit unsolicited mail, spam is still a major global concern. Content-analysis techniques and blacklists, the most popular methods used to identify and block spam, are beginning to lose their edge in the battle. They argue here that...
- Tags: ETH Zurich, Network, Networking
- White papers 2008-08-29
- A portable solar-powered ECG unit
- A student from the Swiss Federal Institute of Technology ETH Zurich has built a portable electrocardiogram ECG unit powered by solar energy. This system is intended for use in developing countries. The system has been named 'Kadiri' which means 'make possible' in the Tanzanian language Kiswahili. The idea for such...
- Tags: ETH Zurich, ECG, Adamczyk, Free Trade, Telecom & Utilities, Engineering, Finance, Roland Piquepaille
- Blog posts 2008-07-27
- 3-D collaborative body art in Scotland
- A collaborative technology developed several years ago at ETH Zurich in Switzerland is now being used in a theater in Scotland. The Living Canvas technology allows performers on stage to interact with recorded visuals projected on them. As said the lead developer, who teamed with a theater director for this...
- Tags: 3D, ETH Zurich, Performance, Technology, Living Canvas Technology, Performance Management, Strategy, Human Resources, Workforce Management, Management, Roland Piquepaille
- Blog posts 2008-04-08
- Design Space Exploration of Network Processor Architectures
- This paper describes an approach to explore the design space for architectures of packet processing devices on the system level. The method is specific to the application domain of packet processors and is based on models for packet processing tasks, a specification of the workload generated by traffic streams, and...
- Tags: ETH Zurich, Packet, Network, Processors, Semiconductors, Hardware, Components
- White papers 2008-01-01
- A Component-Oriented Language for Pointer-Free Parallel Programming
- Today's programming languages typically have substantial deficiencies with regard to structuring and concurrency. To overcome these shortcomings, the paper has developed a new programming language that is based on a general notion of components with three expressive relations: hierarchical composition without explicit pointers, connections with a dual concept of offered...
- Tags: ETH Zurich, Programming Language, Programming, Development Tools, Programming Languages, Software Development, Software/Web Development
- White papers 2007-08-13
- Test-Sequence Generation With Hol-TestGen With an Application to Firewall Testing
- HOL-TestGen is a specification and test case generation environment extending the interactive theorem prover Isabelle/HOL. Its method is two-staged: first, the original formula is partitioned into test cases by transformation into a normal form called test theorem. Second, the test cases are analyzed for ground instances the test data satisfying...
- Tags: ETH Zurich, Generation, Hol-TestGen, Firewalls, Network Security, Security, Networking
- White papers 2007-03-12
- Predicate-Based Indexing of Enterprise Web Applications
- Searching the Web has become a commodity. However, extending applications with search capabilities is still an open research topic. Large enterprise applications such as SAP and Oracle Finance implement their own search engines. Vendors of small applications cannot afford such an investment and, as a result, small applications either do...
- Tags: Web, ETH Zurich, Web Application, Search Technology, Search, Channel Management, Marketing
- White papers 2007-01-10
- QoS Extensions to Mobile Ad Hoc Routing Supporting Real-Time Applications
- Mobile Ad hoc NETworks MANETs, temporarily created by mobile devices, offer opportunities for sharing services and resources made available by member nodes. However, real-time applications require low latency connections with a minimum of jitter and packet loss rate from the underlying network. To meet these demands is a challenging task...
- Tags: ETH Zurich, QoS, Mobile, Network, Advertising & Promotion, Wi-Fi, Wireless, Marketing
- White papers 2005-11-21
- Why QoS Will Be Needed in Metro Ethernets
- Emerging Metro Ethernets create new opportunities to converge data and telephony services. However, to connect legacy telephony equipment, networks have to meet customary QoS requirements even at the presence of bursty data cross traffic. This paper shows with analytical evaluation and simulation results that without appropriate mechanisms the QoS requirements...
- Tags: ETH Zurich, QoS, Telephony, Metro Ethernet, Ethernet, VOIP, Telecom & Utilities, Telecommunications, Networking
- White papers 2005-10-30
- ASIC Implementation of a MIMO-OFDM Transceiver for 192 Mbps WLANs
- Next generation Wireless Local Area Networks WLANs such as the IEEE 802.11n standard are expected to rely on multiple antennas at both transmitter and receiver to increase throughput and link reliability. However, these improvements come at a significant increase in signal processing and hence hardware complexity compared to existing single-antenna...
- Tags: ETH Zurich, MIMO-OFDM, ASICs, Wireless LANs, LANs, Wi-Fi, Wireless, Semiconductors, Hardware, Networking
- White papers 2005-05-10
- Component-Based Software Development With Aspect-Oriented Programming
- Middleware for component-based software development already provides some separation of concerns between the components implementing the business functionality and the component environment implementing the infrastructural services. However, the implementation of the services is usually not modularized, making it hard to adapt the platform to application specific needs, to exchange services...
- Tags: Software, ETH Zurich, Aspect-oriented Programming, Aspect-oriented, Middleware, Software Development, Software/Web Development
- White papers 2005-03-18
- Service Discovery in Mobile Ad Hoc Networks: A Field Theoretic Approach
- Service discovery in mobile ad hoc networks is challenging because of the absence of any central intelligence in the network. Traditional solutions as used in the Internet are hence not well suited for mobile ad hoc networks. This paper presents a novel decentralized service discovery mechanism for ad hoc networks....
- Tags: ETH Zurich, Mobile, Network, Advertising & Promotion, Networking, Marketing
- White papers 2005-02-22
- Interpolation-Based Efficient Matrix Inversion for MIMO-OFDM Receivers
- This paper proposes a new class of computationally efficient algorithms for inverting the channel matrices in zero-forcing MIMO-OFDM receivers. Depending on the number of channel taps and the number of antennas, significant complexity reductions can be realized. For the parameter settings used in the IEEE 802.16 standard, savings of up...
- Tags: ETH Zurich, MIMO-OFDM, WiMAX, Wireless
- White papers 2004-12-08
- Cross-Layer Optimization for Scheduling in OFDM-TDMA Transmission
- In the integrated project My personal Adaptive Global NET MAGNET of the European Union, advanced adaptive and scalable air interface concepts for personal area networks PANs are being studied. The activities are grouped in clusters dealing with different data rates in the physical layer. This paper gives an overview of...
- Tags: ETH Zurich, Optimization, TDMA, OFDM, Cellular Phones, Wireless, Consumer Electronics, Personal Technology
- White papers 2004-10-15
- Requirements and Technologies for Ubiquitous Payment
- The goal of this paper is to identify requirements and test technologies for ubiquitous payment (u-payment). To derive the results the project team conducted interdisciplinary innovation workshops, built demonstrators and analyzed user and UBS experiences. The paper first evaluates the key features of u-payment in comparison to mobile payment (m-payment).
- Tags: ETH Zurich, Payment, Operational Accounting, Finance
- White papers 2004-01-05
- Impact of the Propagation Environment on the Performance of Space-Frequency Coded MIMO-OFDM
- Previous work on space-frequency coded MIMOOFDM has been restricted to idealistic propagation conditions. In this paper, using a broadband MIMO channel model taking into account Ricean K-factor, transmit and receive angle spread, and antenna spacing, we study the impact of the propagation environment on the performance of space-frequency coded MIMO-OFDM.
- Tags: ETH Zurich, Performance, Environment, MIMO-OFDM, Performance Management, Human Resources, Workforce Management
- White papers
- Principles of MIMO-OFDM Wireless Systems
- The use of multiple antennas at both ends of a wireless link MIMO technology holds the potential to drastically improve the spectral efficiency and link reliability in future wireless communications systems. A particularly promising candidate for next-generation fixed and mobile wireless systems is the combination of MIMO technology with Orthogonal...
- Tags: ETH Zurich, MIMO, MIMO-OFDM, Wi-Fi, Wireless
- White papers
- Orthogonal Frequency Division Multiplexing Based on Offset QAM
- One of the factors determining the performance of wireless Orthogonal Frequency Division Multiplexing OFDM systems is time-frequency localization of the transmitter and receiver pulse shaping filters. OFDM based on offset quadrature amplitude modulation (OFDM/OQAM) bypasses a major disadvantage of OFDM based on ordinary QAM, namely the fact that time-frequency well-localized...
- Tags: ETH Zurich, OFDM, Wireless
- White papers
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