Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Pathloss"”.
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Μοντελοποίηση και ανάπτυξη ετερογενών κινητών δικτύων οχήματος-προς-όχημα (Vehicle-to-Vehicle) και οχήματος- προς-υποδομή (Vehicle-to-Infrastructure) με έμφαση σε δύσκολα περιβάλλοντα μετάδοσης
… και την εξομοίωση του προτεινόμενου Break-Point-PathLoss μοντέλου καναλιού σε περιβάλλον σήραγγας και εν συνεχεία εφαρμόστηκε σε ετερογενή WiMAX-WLAN δίκτυα. Με τη χρήση του προτεινόμενου Break-Point-PathLoss μοντέλου καναλιού ο χρήστης δύναται πλέον να εξομοιώσει με ακρίβεια οποιοδήποτε ασύρματο …
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Demonstration of an Effective 4G LTE Network Simulator to Analyze Performance and Ensure Reliable Communication
… effects on a wireless network like fading, pathloss, number of users and resource allocation. It can then explore various aspects of 4G LTE that contributes towards design and analysis of the network performance for various scenarios supporting deployment of the new network for futuristic …
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Characterization of Ultra Wideband Communication Channels
… observations are discussed. The results for pathloss exponent and time dispersion parameters are presented. The analyses results indicate the immunity of UWB signals to multipath fading. The results also clearly show that UWB signals, unlike narrowband signals, do not suffer from small scale …
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On Enabling Virtualization and Millimeter Wave Technologies in Cellular Networks
… techniques to compensate for the high pathloss. The directional communication in the presence of uncertainty in UE locations and channel conditions, make maintaining connectivity and performing initial access and cell discovery challenging. To address these challenges, we develop an …
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Quantifying Trust and Reputation for Defense against Adversaries in Multi-Channel Dynamic Spectrum Access Networks
… aggressiveness and variations introduced by the pathloss environment. We also propose extensions to the anomaly monitoring technique that facilitate learning about strategies employed by malicious nodes and also utilize the misleading information they provide. We also devise strategies to defend …
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Measurement Based Channel Characterization and Modeling for Vehicle-to-Vehicle Communications
… of a validation study of a stochastic NLOS pathloss and fading model named VirtualSource11p for V2V communication in urban street intersections. The reference model is validated with the help of independent channel measurement data. It is found that the model is flexible and fits well to …
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Ultrawideband Channel Sounding Studies in Outdoor and Outdoor-Indoor Environments
Ultrawideband (UWB) is one of the most promising communication technologies in recent times with the promise of high data rates and spectral reuse. This work analyses the outdoor and outdoor-to-indoor propagating characteristics of the UWB pulse, which can be of the order of a few gigahertz in …
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Indoor Propagation Modeling at 2.4 GHz for IEEE 802.11 Networks
Indoor use of wireless systems poses one of the biggest design challenges. It is difficult to predict the propagation of a radio frequency wave in an indoor environment. To assist in deploying the above systems, characterization of the indoor radio propagation channel is essential. The …