Entwurf eines drahtlosen multihop Ad-hoc-Funknetzes mit Dienstgüteunterstützung
Authors: Lott, Matthias
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University
Contact: publications@comnets.rwth-aachen.de
Ph. D. Dissertation Aachen University, ABMT 24, p. 229, ISBN:3-89653-853-5,Wissenschaftsverlag Mainz, 2001.
Publication Date: , 2001
On page(s):229
ISBN: 3-89653-853-5
Abstract
In the information age the importance of mobile communication is increasing. Especially
with the success of the internet mobile data applications become attractive for the
users. Furthermore, there is an evolution towards multimedia applications, i.e. simultaneous
voice, data and/or video transmission. Since it is not possible to install an appropriate
infrastructure everywhere or without considerable installation costs, there is an increasing
demand for wireless ad hoc networks that provide spotaneous communication between
mobile stations.
Because multimedia applications need higher data rates and quality of service (QoS),
new circumstances arise that have to be considered for the design of appropriate protocols
and tansmission schemes for the air-interface of the ad hoc system. In this thesis the
main components and aspects for the development of an air-interface are investigated and
appropriate protocols are suggested.
Besides the propogation conditions at 5 GHz, which are characterized by means of raytracing
techniques and have direct impact on the transmission scheme, analytical models
are derived for the proposed transmission scheme OFDM (Orthogonal Frequency Division
Multiplexing) in combination with dierential modulation schemes.
Both, propagation conditions and transmission schemes, will be taken into account for
the development of the protocols. Thereby, special attention is paid to the characteristics
of ad hoc systems with QoS suppport.
The procedure and results described within this thesis are useful for the development
of new air-interfaces. Especially the method of the complete consideration of all relevant
components that have an impact on the performance of the remaining components leads
to an optimal solution. This method should be applied early in the developmental phase
of a new air-interface.
For the performance evaluation of the proposed protocols, which have been speci ed
in SDL (Speci cation and Description Language), an event-driven simulator has been developed.
On the one hand it is characterized by its modularity and on the other hand by
its realistic consideration of the propogation conditions and their impact on transmission
errors. By means of the simulator suitable values have been derived for the protocol parameters
and it has been shown that the proposed protocols are appropriate to support
multimedia applications in ad hoc networks.
Author Keywords
DownloadBibtex
@PHDTHESIS{Diss_Lott,
AUTHOR = {Lott, M.},
TITLE = {Entwurf eines drahtlosen multihop Ad-hoc-Funknetzes mit
Dienstgüteunterstützung},
YEAR = {2001},
VOLUME = {24},
PAGES = {229},
PUBLISHER = {Wissenschaftsverlag Mainz},
ADDRESS = {Lehrstuhl für Kommunikationsnetze},
SCHOOL = {Aachen University},
SERIES = {ABMT},
EDITION = {1},
AFFILIATION = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
ISBN = {3-89653-853-5},
URL = {https://www.comnets.rwth-aachen.de}
}
Signature in CN-Library = {Qa 024}