Searched for: department%3A%22Telecommunications%22
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Wikan Hantoro, B. (author)
Cognitive radio (CR) is an approach with high potentials in the effort of battling spectrum scarcity, introduced by J. Mitola in the late 90’s. It is capable of sensing the communication environment and adapting to it by changing its radio parameters. Beamforming technique allows the cognitive users to opportunistically access the licensed...
master thesis 2011
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Pramudiwati, D. (author)
In the current radio planning of wireless cellular networks, analysis of system performance is based on Signal to Noise Ratio (SNR). However, for wideband system such as LTE, the performance depends not only on the SNR but also on the amount of frequency and spatial diversity that the system can exploit. These diversities rely on the delay and...
master thesis 2011
document
Prasetyo, W.A. (author)
Cooperative communication is a technique to use nodes in the wireless network as relays to forward information to the destination. Cooperative communication technique relies on the relay selection and power allocation process to optimize its performance since not all available nodes are beneficial to use for forwarding. Game theory is a branch...
master thesis 2011
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Koc, Y. (author)
master thesis 2011
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Caratelli, D. (author), Gielis, J. (author), Natalini, P. (author), Ricci, P.E. (author), Tavkhelidze, I. (author)
The interior and exterior Robin problems for the Helmholtz equation in starlike planar domains are addressed by using a suitable Fourier-like technique. Attention is in particular focused on normal-polar domains whose boundaries are defined by the so-called “superformula” introduced by J. Gielis. A dedicated numerical procedure based on the...
journal article 2011
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Caratelli, D. (author), Viganó, M.C. (author)
A novel analytical approach to the synthesis of linear sparse arrays with uniform?amplitude excitation is presented and thoroughly discussed in this paper. The proposed technique, based on the auxiliary array factor concept, is aimed at the deterministic determination of the optimal array element density and excitation phase tapering...
journal article 2011
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Diaz Castellanos, E.G. (author)
The growing popularity of the Internet and the increasing demand of services based on IP have influenced the evolution of home networks. From a simple network constituted by just a PC and a modem, the home network has become a complex environment providing connectivity to several devices with different capabilities. Although service providers...
master thesis 2011
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Vazifehdan, J. (author)
Wireless networks have provided us a variety of services which facilitate communication between people beyond the physical boundaries. Mobile telephony, mobile Internet and high-deffnition video calls are examples of services supported by modern networks nowadays. Beyond this, enhancements in processing capabilities of electronic devices coupled...
doctoral thesis 2011
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Van Mieghem, P. (author), Stevanovi?, D. (author), Kuipers, F. (author), Li, C. (author), Van de Bovenkamp, R. (author), Liu, D. (author), Wang, H. (author)
The decrease of the spectral radius, an important characterizer of network dynamics, by removing links is investigated. The minimization of the spectral radius by removing m links is shown to be an NP-complete problem, which suggests considering heuristic strategies. Several greedy strategies are compared, and several bounds on the decrease of...
journal article 2011
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Bajpai, A. (author)
Wavelet Packet Modulation (WPM) is a multicarrier modulation technique like the well-established Orthogonal Frequency Division Multiplexing (OFDM). It has several advantages over OFDM, such as flexibility of operation and excellent localization in frequency. The Channel Equalization for WPM is new and an unexplored research area. It is also...
master thesis 2011
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Liu, Y. (author)
This thesis introduces the wake-up radio into ZigBee technology and presents three routing protocols for this dual-radio cooperative transmission.
master thesis 2011
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Bajpai, A. (author)
This thesis work presents design and implementation of a channel equalizer for wavelet packet modulation.
master thesis 2011
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Mouri Sardarabadi, A. (author)
Many techniques for array processing assume either that the system has a calibrated array or that the noise covariance matrix is known. If the noise covariance matrix is unknown, training or other calibration techniques are used to find it. In this thesis another approach to the problem of unknown noise covariance is presented. The factor...
master thesis 2011
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Guan, P. (author)
The emphasis of this thesis work is placed on improving cell-edge multi-user performance in 3GPP LTE-Advanced networks by utilizing relaying and base station coordination technologies. Relaying is a technology for enhancing the transmissions between two locations on a radio path and base station coordination is a multi-cell processing technology...
master thesis 2011
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Pang, X. (author), Gbur, G. (author), Visser, T.D. (author)
The phase behavior of Airy beams is studied, and their Gouy phase is defined. Analytic expressions for the idealized, infinite-energy type beam are derived. They are shown to be excellent approximations for finite-energy beams generated under typical experimental conditions.
journal article 2011
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Khatibi, A.K. (author)
Dual-radio cooperation uses a low-power wake up radio to minimize the energy consumption of the wireless node in low event rates, and switches to single-radio working method in event rates more than the critical event rate. Critical event rate is defined as the rate above which dual-radio node consumes more energy than the single-radio model or...
master thesis 2011
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Den Engelsen, E. (author), Stienstra, E.D. (author)
The TARA scans through a column of atmosphere in order to observe and study cloud system behavior. After 10 years of operation new knowledge of processing has been acquired which allows for an update that will improve measurement quality and processing speed. The main question of this thesis is: How to implement data processing, visualization...
bachelor thesis 2011
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Kotobi, K. (author)
The studies about the effects of multipath fading and shadowing for wireless cooperative networks are insufficient. Almost all real wireless networks can be modeled by changing the parameters of the composite distribution which models both multipath and shadow fading. This composite distribution makes the analytical calculation of bit error rate...
master thesis 2011
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Chen, J. (author)
master thesis 2011
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Tadema, J. (author)
doctoral thesis 2011
Searched for: department%3A%22Telecommunications%22
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