Searched for: contributor:"Leus, G. (mentor)"
(1 - 20 of 20)
document
Zhang, H. (author)
For energy management in wireless sensor networks, only the sensors with most informative measurements are activated to operate. How to select sensors that make good tradeoff between performance and energy consumption is what many researchers are focusing on. Existing solutions assume analog data model, i.e., the data from sensors collected by a...
master thesis 2015
document
Rao, S. (author)
Direction-of-arrival (DOA) estimation of acoustic sources is of great interest in a number of applications. Acoustic vector sensors (AVSs) provide an edge over traditional scalar sensors since they measure the acoustic velocity field in addition to the acoustic pressure. It is known that a uniform linear array (ULA) of M conventional scalar...
master thesis 2015
document
Bruinsma, W.P. (author), Hes, R.P. (author), Kroep, H.J.C. (author), Leliveld, T.C. (author), Melching, W.M. (author), Aan de Wiel, T.A. (author)
This document describes the design process of a software toolkit to perform high-performance wideband spectrum sensing. A prominent application of this is Cognitive Radio, a technique that aims to make more efficient use of the available radio spectrum. An extensive theoretical analysis will be performed. Various non-uniform sampling techniques...
bachelor thesis 2015
document
Naghibzadeh, S. (author)
Providing automated granular control of lighting, along with user-driven control, results in an energy-efficient smart lighting system design while catering to personal occupant preferences. Two functional ingredients in such a system are: (i) sensing that provides granular information on occupant location, and (ii) a communication system to...
master thesis 2014
document
Lu, Y. (author)
The lighting industry has been comprehensively developed and deployed during recent decades, especially with the rise of LED technology. As a related technique field, lighting control system has also draw more and more attention; therefore intelligent lighting control systems are needed. Nowadays, several famous lighting companies are working on...
master thesis 2014
document
Nie, C. (author)
Several leading lighting companies for example NXP and Philips work in a project to explore the next generation intelligent lighting system. One innovation of the project is using a distributed architecture to replace current centralized system to increase robustness and extensibility. As a core component of wireless lighting control system,...
master thesis 2014
document
Hu, K. (author)
Near-field source localization is an important aspect in many diverse areas such as acoustics, seismology, to list a few. The planar wave assumption frequently used in far-field source localization is no longer valid when the sources are in the near field. Near-field sources can be localized by solving a joint direction-of-arrival and range...
master thesis 2014
document
Pan, N. (author)
Energy-harvesting cognitive radio network has emerged as a solution to increase energy and spectrum efficiency. In this thesis, we propose short-term offline optimal power allocation algorithms for multi-user energy-harvesting cognitive radio networks considering interference between secondary users. Assuming finite and rechargeable batteries...
master thesis 2014
document
Zegov, L.T. (author)
Compressive sensing (CS) provides a new paradigm in data acquisition and signal processing in radar, based on the assumptions of sparsity of an unknown radar scene, and the incoherence of the transmitted signal. The resolution in the conventional pulse-compression radar is foreseen to be improved by the implementation of CS. An unknown sparse...
master thesis 2013
document
Shakeri, S. (author)
In this work a new location fingerprinting-based localization algorithm is proposed for an underwater medium by utilizing ultra-wideband (UWB) signals. In many conventional underwater systems, localization is accomplished by utilizing acoustic waves. On the other hand, electromagnetic waves haven't been employed for underwater localization due...
master thesis 2012
document
Huang, Z. (author)
In the development of wireless sensor networks, power consumption is one of the bottlenecks for wide applications. In order to improve the energy efficiency of wireless sensor networks, a wakeup radio scheme is presented. The main transceiver that is responsible for data communication is in the sleep mode most of the time. An additional device...
master thesis 2011
document
Chepuri, S.P. (author)
The limited availability of radio frequency spectrum demands for more efficient ways to utilize it in future wireless networks. Spectrum sharing radios are an interesting solution to the spectral scarcity problem, where the available resources are adaptively used across time and frequency without affecting other user's transmissions. In this...
master thesis 2011
document
't Hart, P.A. (author), De Buck, P.B.A. (author)
In dit ontwerprapport wordt een systeem ontworpen dat via ledverlichting in een warenhuis elektronische prijskaartjes aanstuurt. De informatie die op het display van elk kaartje moet verschijnen, wordt onzichtbaar voor het oog gecodeerd in het uitgestuurde licht. Het ontwerp bestaat uit een enkele zender, namelijk de ledverlichting van een...
bachelor thesis 2011
document
Borota, D. (author), Jansen, B.A. (author)
bachelor thesis 2011
document
Caicedo, D. (author)
Light emitting diode (LED) based systems are considered to be the future of lighting. We consider the problem of energy-efficient illumination control of such systems. Energy-efficient system design is based on two aspects: localized information of occupancy and optimization of dimming levels of the LEDs. Specifically, we are interested in...
master thesis 2010
document
Liu, D. (author)
In recent years, light-emitting diodes (LEDs) have played an increasingly more important role for light illumination. Beyond the basic function of pure illumination via intensity control of xed color light, LED technology additionally allows control over the light color and illumination pattern. In order to realize these functions of intelligent...
master thesis 2010
document
Khan, M.N. (author)
The main target of a 60 GHz transceiver system is to obtain data rates close to gigabits per second (Gbps) over short distances. The 60 GHz suffers from severe pathloss, inter-symbol interference (ISI) and a limited link budget. In order to improve the link budget, beamforming techniques are utilized. Antenna beamforming, i.e., combining signals...
master thesis 2009
document
Aqeel, S. (author)
Wireless sensor networks are becoming increasingly popular due to their low cost and wide applicability to support a large number of diverse application areas. Localization of sensor nodes is a fundamental requirement that makes the sensor data meaningful. Energy and cost constraints only allow to equip a few nodes with a GPS device and to...
master thesis 2009
document
Godana, B.E. (author)
Human activity characterization based on gait signatures is important in several applications including medical, elderly care, police, biometric identification, etc. Cameras and on-body accelerometers are widely investigated for characterizing human activity. Nonetheless, in order to achieve wide acceptance, sensors to be used for these...
master thesis 2009
document
Lamelas Polo, Y. (author)
It has been widely recognized that utilization of radio spectrum by licensed wireless systems, e.g., TV broadcasting, aeronautical telemetry, is quite low. In particular, at any given time and spatial region, there are frequency bands where there is no signal occupancy. There has been recent interest in improving spectrum utilization by...
master thesis 2008
Searched for: contributor:"Leus, G. (mentor)"
(1 - 20 of 20)