Searched for: department%3A%22Telecommunicatie%255C-%255C+en%255C+Verkeersbegeleidingssystemen%22
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Robers, S.H. (author)
Most current UAVs are remotely piloted during the final approach and landing of the vehicle. This form of navigation requires great skill of the human operator to minimize the accident risk. The introduction of an automatic landing system can, with the right implementation, decrease the accident risk and reduce the required operator training....
master thesis 2008
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Lansbergen, D.A. (author)
Nowadays, many infrastructures have to suffer from congestion problems due to a lack of capacity. The road infrastructure is a good example, but current telecommunications networks like the internet have to face the same problem. Quality of Service (QoS) is a concept in the internet, which has become more significant the last couple of years....
master thesis 2002
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Jimenez Caldevilla, H. (author)
In this thesis an optimum compound modulation signal is developed for the downlink of a narrowband multiuser communication system. This compound signal is optimised both in amplitude and phase in order to minimize the emitted power while maintaining acceptable error probabilities. The average transmitted power required by the compound signal is...
master thesis 2002
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Van Tienen, S.E.M. (author)
A theoretical equation to calculate an estimation of the bit error floor of punctured turbo codes is discussed. Furthermore we calculate the coefficients needed for this equation for symmetric and asymmetric turbo codes of memory order 3 and 4 and for code rate 1/2, 3/5, 2/3, 7/10 and 3/4. This leads to the conclusion, that most of the times the...
master thesis 2000
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Ogenio, S.N. (author)
A method is presented and practically implemented for detecting and correcting the gain and phase imbalances and the bias errors in the inphase and quadrature-phase channels of the MURX (Multi-User Receivers) demonstrator by means of parameters, which are derived digitally from measurements of a test signal. This is done without using special...
master thesis 2000
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Obbohat, N. (author)
The NIMA model has the advantage that technologies can be assessed on a variety of aspects by different people while the end results remain easy to comprehend. The fact that parameters can be modified to see the change in the end results of the assessment can help the assessor to gain knowledge about how a technology will develop in the future ...
master thesis 2000
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Arrachart, R.A. (author)
Cityfix is an integrated navigation system, which combines Differential GNSS and MW-radio transmissions. During outages or poor performance of the DGNSS the Cityfix system measures the carrier wave phases of the MW-radio transmitters to determine a displacement from the last accurate DGNSS position. This paper describes the implementation of the...
master thesis 2000
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Hosseinzadeh, A. (author)
The objective of this M.Sc. graduation thesis is to study the behavior of the wideband indoor and outdoor radio channel at 5GHz. Measurements were performed both inside and outside ET (Electrical Engineering building of Delft Technical University of Technology). In total five indoor areas and one outdoor area were selected to perform wideband...
master thesis 2000
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Kuipers, B.W.M. (author)
This report presents a scheme for combatting spectral regrowth. Due to the non-lineair character of a power efficient amplifier, in case of a non-constant envelope signal, inter modulation products will occur causing distortion in other frequency bands.<br/> EDGE is a next phase GSM solution (Phase 2+). The main goal of EDGE is providing higher...
master thesis 1999
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Scavetta, V. (author)
master thesis 1999
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Maccioni, F. (author)
The goal of this report is to compare the performance of a TDMA system implementing the Dual Signal Receiver (DSR) with the ones of a conventional (GSM-like) system. In the DSR, two narrowband signals are assigned to the same channel, completely overlapping in time and frequency, without the necessity of spectrum spreading. A Coupling Algorithm ...
master thesis 1999
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De Bruijn, R.E. (author)
At present, the GPS position sensor requirements are lower than the requirements that have to be met when using perspective flightpath displays. Besides the GPS position sensor requirements, data latency, data update rate, and display update rate, could cause the display presentation system not to meet all the requirements. As a result,...
master thesis 1999
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Spaans, K. (author)
Abstract - The objective is to design a suitable protocol for error-correction that is to be used in a multi-carrier wireless communication system in a multipath channel. Different kinds of codewordmapping are applied, that should enhance the errorcorrecting capabilities of existing codes. Simulations of the system are run to examine if this is...
master thesis 1999
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Aarrass, S. (author)
This thesis presents a performance comparison of multiuser detectors for direct sequence code division multiple access (DS-CDMA) systems. Beside the conventional receiver, different multiuser algorithms proposed in the literature are reviewed. Based on the variable spreading factor (VSF) scheme a multirate system is presented. For this system...
master thesis 1999
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Bhajan, H. (author)
Abstract—In recent years, much of the information exchange is done with the use of PC’s. This increase in PC usage leads to an increase in illegal information leakage and eavesdropping. To protect the information (data) measures must be taken to ensure security. A way to enforce protection is by the application of cryptography. We have used DES...
master thesis 1999
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Koning, R.C. (author)
This paper describes seven insider attacks, amongst which four new ones, on the Internet Protocol based Open Shortest Path First (OSPF) routing protocol. The attacks can cause severe degradation of network service and even complete denial of service. The attacks were implemented and launched on a small test network. To guard against the attacks...
master thesis 1999
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Van der Leeuw, S.J. (author)
Position determination systems based on differential satellite systems can achieve a very high accuracy. The Eurofix system for example, can determine positions with an accuracy of 5 metres for 95 percent of the time. A problem that arises when using these differential satellite systems, is the bad reception quality of the satellite signals in...
master thesis 1999
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Bronkhorst, L. (author)
Lucent Technologies, Inc has installed a web-interface for a system requirements database. In the summer of 1998, the performance of the tool was slow and was not suitable for use in the production environment for the project. The operations that the program performs were analyzed, six server / client configurations were tested and a bottleneck...
master thesis 1999
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Nostrato, E. (author), Piagneri, S. (author)
In this report we study different antenna diversity techniques applied in a fading environment when two co-channel signals are present at the receiver input.
master thesis 1999
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Nostrato, E. (author), Piagneri, S. (author)
master thesis 1999
Searched for: department%3A%22Telecommunicatie%255C-%255C+en%255C+Verkeersbegeleidingssystemen%22
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