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Tessema, N.M. (author)
The wide deployment of wireless sensor nodes for varieties of applications calls the need for distributed beamforming as a cooperative scheme to efficiently use spectrum, to improve communication range and to save precious battery power during transmission. Given that there are a large set of cooperative cognitive radio users, ensuring the...
master thesis 2012
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Sridharan, V. (author)
Non-coherent on-off keying (OOK) receivers are preferred in ultra low power (ULP) wireless devices as they consume less power when compared to receivers based on other modulation schemes. However, these devices are highly susceptible to co-channel interference (CCI). Therefore, interference cancellation (IC) techniques for ULP non-coherent OOK...
master thesis 2012
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Mulyawan, R. (author)
Wavelet Packet based Multi-Carrier Modulation (WPM) offers an alternative to the well-established Orthogonal Frequency Division Multiplexing (OFDM) as an efficient multicarrier modulation technique. It has strong advantage of being generic transmission scheme whose actual characteristics can be widely customized to fulfill several requirements...
master thesis 2011
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Mukti, P.H. (author)
Wireless telecommunication services are growing rapidly both in terms of the underlying technology as well as in the nature of the applications. The trends point to further growth in the foreseeable future. However, the dynamic nature of the wireless channel places fundamental limitations on the performance of wireless communication system....
master thesis 2011
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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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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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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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Chen, J. (author)
master thesis 2011
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Torun, B. (author)
Wavelet Packet Modulation (WPM) is a novel multicarrier modulation technique and a promising alternative to the well established Orthogonal Frequency Division Multiplexing (OFDM). WPM has been shown to be an efficient technique with interesting features like adaptation and flexibility and improved characteristics in comparison to OFDM. A major...
master thesis 2010
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Louh, A. (author)
The Dutch electricity grid is considered one of the most reliable in the world. However in the near and far future, significant changes will occur, that will endanger its stability, reliability and safety. Introduction of an embedded wireless sensor network, to determine the state of the power system at any time, in order to cope with these...
master thesis 2009
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Ariananda, D.D. (author)
One of the important functionalities of Dynamic Spectrum Access is spectrum estimation. Accuracy and speed of estimation are the key indicators to select the appropriate spectrum estimation technique. In this thesis work, the possibility of employing wavelet packet decomposition as a basis for a new spectrum estimation approach is investigated....
master thesis 2009
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Bokiye, A.M. (author)
The demand for high data rate is ever increasing. OFDM-based wideband systems such as LTE and WiMAX are being employed as they can provide such high data rates. The performances of these systems not only depend on SNR but also on wideband arameters such as delay spread and angular spread. Obstacles (buildings, trees, vehicles, lamp posts, etc.)...
master 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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Farazmand, Y. (author)
Typically, in a wireless data network, all devices use the same channel (i.e. the same frequency) so that they can easily communicate with each other. However, as node density increases, the throughput share of each device decreases due to contention of the wireless medium. It seems that the capacity problem in wireless mesh networks can be...
master thesis 2009
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Karamehmedovic, D. (author)
Wavelet Packet based Multi-Carrier Modulation (WPMCM) offers an alternative to the well-established OFDM as an efficient multicarrier modulation technique. It has strong advantage of being generic transmission scheme whose actual characteristics can be widely customized to fulfill several requirements and constraints of advanced communication...
master thesis 2009
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Zhang, W. (author)
Wireless communications is one of the fastest growing fields in the communication industry. Mobile communication systems evolution speeds up from 2G towards 4G and beyond. Many new applications, such as wireless sensor networks, automated highways and factories, smart homes and appliances, are turning from research ideas to practical systems....
master thesis 2008
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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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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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Van Meeteren, A.F. (author)
This report presents the performance of Groupwise Weighted Parallel Interference Cancellation (GW-PIC) receivers within a direct sequence code division multiple access (DS-CDMA) scheme. A multirate model, derived from a single rate model, is presented. In this multirate model several Multiuser Detection receivers have been studied. In this...
master thesis 1999
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