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Chen, S. (author)In the development of wireless sensor networks, the lifetime of a sensor node is always a key design consideration. Since the battery in a sensor node can usually not be recharged or changed, power management is an effective way to extend the network lifetime. The wireless transceiver, also regarded as the ‘main radio’, is a relatively power...master thesis 2009
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Systematic measurement and optimization of a Universal Transducer Interface in resistive-bridge modeYe, J. (author)The Universal Transducer Interface (UTI) is a mass-produced interface circuit which can realize the functions of measuring signals of various sensors such as capacitive sensors, resistive-bridge sensors and resistive sensors. For some of the front-ends, an instrumentation amplifier, which is implemented with dynamic-element-matching (DEM) for...master thesis 2009
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Ngabonziza, S. (author)Broadband infrastructures are advanced telecommunication systems capable of providing high-speed transmission of services. Broadband deployment has the potential to bring valuable new services, stimulate economic activity, advance economic opportunity and improve productivity. For example, the European Commission has stated that "widespread and...master thesis 2009
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Christiaanse, G.J. (author), Van Eijk, M.F. (author)Lichtshows van live voorstellingen als Parkpop en Lowlands kunnen vloeiender verlopen als de lichtman een oplossing wordt aangereikt om zijn lichtpaneel met minder handelingen te bedienen. Het doel van dit rapport is het presenteren van een ontwerp voor dit concept, de CS-2 genaamd, en het uitwerken van dit ontwerp. Dit rapport gaat in op de...bachelor thesis 2009
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Ghaseminezhad Marandi, I. (author)The IEEE 802.11n standard is a promising technology for near future Wireless LAN's. By utilizing enhanced techniques like MIMO communication and OFDM digital modulation extremely high data rates over large distances are possible for wireless communications. Predecessors like 802.11b/g standards are succesfully outnumbered and a strong competitor...master thesis 2009
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Schoonover, R.W. (author)In this dissertation, the field of singular optics is examined in terms of common laboratory experiments. Different types of field singularities are related to one another. Problems in coherence theory related to two correlated sources are also investigated.doctoral thesis 2009
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- Abraha, S.T. (author) master thesis 2008
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Beijer, D. (author), Seepers, R. (author)In this thesis report, two sensor systems for measuring the position of a levitated spindle are proposed. An off-the-shelf optical sensor is used and the results of the implementation are discussed. Furthermore a capacitive sensor system is designed, consisting of a capacitive ring, sensor plates and signal conditioning. Testing shows both of...bachelor thesis 2008
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Van Akkeren, R. (author), Bensdorp, S. (author), Vos, M. (author)FPGAs are easy and cheap to produce, a world of new possibilities is opened. One of those is in the area of reconfigurable computing. It is possible to extend normal CPUs with FPGAs for specific tasks, especially for those tasks which requires a lot of computational power. The Delft WorkBench is such a project. In this project, C-code is...bachelor thesis 2008
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Boonstra, A.J. (author), Van der Tol, S. (author)The Low Frequency Array (LOFAR) is a radio telescope currently being designed. Its targeted observational frequency window lies in the range of 10–250 MHz. In frequency bands in which there is interference, the sensitivity of LOFAR can be enhanced by interference mitigation techniques. In this paper we demonstrate spatial filtering capabilities...journal article 2005
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Schilt, G.J. (author)The telecommunications market is nowadays driven by two trends: growing data traffic and increasing mobility. The expected growth of mobile data traffic requires a wireless ubiquitous data network. Unfortunately, the GSM network is less suitable for data. Connection set-up times are too long, the transmission speed of 9,6 kb/s is too low and the...master thesis 2000
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Winklaar, D.S. (author)Satellite-based navigation systems may suffer from a reduced availability in the urban environment due to reflections or shading of the RF signals by man-made obstacles. To bridge these periods of unavailability, a landbased back-up system is necessary. Cityfix is a DGNSS (e.g. EUROFIX) system augmented with a terrestrial positioning and...master thesis 1999
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Wijting, C.S. (author)This report presents the performance of groupwise successive interference cancellation (GSIC) within a direct sequence code division multiple access system (DS-CDMA). Within the groups, matched filter and PIC receivers are used for detection of the users. A multirate DS-CDMA system model, based on a single rate system is presented. Although the...master thesis 1998
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Voorman, A.J. (author)The third generation of the mobile communications network is the Universal Mobile Telecommunications System (UMTS). One of the multiple access techniques will be Direct Sequence Code Division Multiple Access (DS-CDMA). This report evaluates the performance of different detectors for DS-CDMA systems for the specifications of the UMTS environment...master thesis 1998
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van Westen, M.R. (author)A slotted ISMA protocol has been proposed for using with the communication channel from vehicles to a base station near the motorway. In this report the performance of this channel using the proposed protocol is analysed. Three slotted ISMA protocols can be distinguished, namely: • p-persistent slotted ISMA; • 1-persistent slotted ISMA; • non...master thesis 1998
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Ping, X. (author)The current computer networks give a very easy way to people to communicate with each other. However, the conventional IP routing network technology is not suited for the increasing number of network users and the increasing new network multimedia applications. Both IP Switching proposed by Ipsilon and Tag Switching proposed by Cisco try to give...master thesis 1997
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de Vos, R. (author)For scientific experiments it is sometimes desirable to eliminate the earth gravity partially or entirely. It is possible to create this 'microgravity' with the use of a droptower, a spacevehicle or an aeroplane. Because the existing facilities for this kind of research are very expensive, have long waiting periods (space vehicle, aeroplane) or...master thesis 1997
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van der Veen, J.A. (author)In low visibility conditions airport capacity is restricted because the ground movement operations are difficult to perform. In this report the problems that exist in low visibility ground movement are defined. Requirements for a system that provides a solution are considered and developments that are done are discussed…master thesis 1997
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Reinhoudt, E.M. (author)In order to increase the passenger handling rate at airports, landing and departure separations of aircraft are being minimised. During low visibility conditions, a bottleneck emerges in handling aircraft on the ground because of highly decreased taxi speeds. This causes increasing delays, aircraft having to fly extra holding patterns and...master thesis 1997
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Woets, R. (author)This thesis report gives a brief introduction to object-oriented modelling, and the development of an object-oriented model of a C-band datalink, as well as the implementation of this model in software. This work is done in the context of the Multi-Mode Integrated Approach System (MIAS) research, to develop a tool for the estimation of the...master thesis 1996