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Performance evaluation of multi-hop WPANS based on a realistic OFDM UWB physical layer
Descriptive
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Title
Performance evaluation of multi-hop WPANS based on a realistic OFDM UWB physical layer
Name
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Gao
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Hongju
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1972-
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Hongju Gao
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author
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Daut
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David
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Advisory Committee
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David G. Daut
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chair
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Marsic
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Ivan
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Advisory Committee
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Ivan Marsic
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internal member
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Wade
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Advisory Committee
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Wade Trappe
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internal member
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Zhang
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Yanyong
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Advisory Committee
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Yanyong Zhang
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internal member
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Kang
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Jaewon
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Advisory Committee
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Jaewon Kang
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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theses
OriginInfo
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2007
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2007
Language
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English
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electronic
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application/pdf
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text/xml
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xi, 100 pages
Abstract
MB-OFDM (Multi-Band Orthogonal Frequency Division Multiplexing) is one of the promising candidates for the UWB (Ultra-Wide-Band)-based alternative physical (PHY) layer for WPANs (Wireless Personal Area Networks). However, the coverage radius of MB-OFDM UWB systems is very short, and single-hop transmissions may not be adequate for WPANs operating at very high-data-rates. Therefore, a multi-hop ad hoc WPAN system is considered in this study in order to extend the UWB radio coverage. The overall system performance is obtained to determine if the Quality-of-Service parameters can still be preserved when an IEEE 802.15.3 TDMA MAC layer is used in multi-hop communication scenarios.
A position-based stateless routing protocol with greedy forwarding is adopted in this study for multi-hop WPANs. Simulation results show that the position-based stateless greedy routing scheme with carefully selected transmission radius R meets the QoS performance criteria for many real-time applications before saturation of the network occurs. Hence, the scheme is a good choice for the routing protocol to be used with multi-hop WPANs based on an OFDM UWB physical layer.
At the MAC layer, when using equal-weighted topology-based scheduling, it can be observed that the system performance obtained can meet QoS requirements only when either the data rate is very low, or there are only a very small number of active links. Network capacities actually achieved for both 200 and 480 Mbps transmission systems are much less than those predicted by theory since the network bandwidth is not utilized efficiently. When using the on-demand rate-based scheduling scheme, the performance results for both the 200 and 480 Mbps transmission systems match the network capacity levels expected for multi-hop WPANs. The scheduling efficiency is comparatively high for the on-demand scheduling scheme, and hence, network bandwidth can be utilized more efficiently. It has been found that the IEEE 802.15.3 TDMA MAC layer, with the proper scheduling and routing schemes can satisfactorily meet QoS requirements in the context of multi-hop networks. Multi-hop WPAN based on the OFDM UWB physical layer has been determined to be a viable approach to extend the network coverage while adequately supporting very high data rate multimedia traffic.
A position-based stateless routing protocol with greedy forwarding is adopted in this study for multi-hop WPANs. Simulation results show that the position-based stateless greedy routing scheme with carefully selected transmission radius R meets the QoS performance criteria for many real-time applications before saturation of the network occurs. Hence, the scheme is a good choice for the routing protocol to be used with multi-hop WPANs based on an OFDM UWB physical layer.
At the MAC layer, when using equal-weighted topology-based scheduling, it can be observed that the system performance obtained can meet QoS requirements only when either the data rate is very low, or there are only a very small number of active links. Network capacities actually achieved for both 200 and 480 Mbps transmission systems are much less than those predicted by theory since the network bandwidth is not utilized efficiently. When using the on-demand rate-based scheduling scheme, the performance results for both the 200 and 480 Mbps transmission systems match the network capacity levels expected for multi-hop WPANs. The scheduling efficiency is comparatively high for the on-demand scheduling scheme, and hence, network bandwidth can be utilized more efficiently. It has been found that the IEEE 802.15.3 TDMA MAC layer, with the proper scheduling and routing schemes can satisfactorily meet QoS requirements in the context of multi-hop networks. Multi-hop WPAN based on the OFDM UWB physical layer has been determined to be a viable approach to extend the network coverage while adequately supporting very high data rate multimedia traffic.
Note
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Ph.D.
Note
(type = bibliography)
Includes bibliographical references (p. 97-99).
Subject
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Topic
Electrical and Computer Engineering
Subject
(ID = SUBJ2);
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Topic
Personal communication service systems
Subject
(ID = SUBJ3);
(authority = ETD-LCSH)
Topic
Wireless communication systems
Subject
(ID = SUBJ4);
(authority = ETD-LCSH)
Topic
Mobile communication systems
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Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.15856
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ETD_254
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doi:10.7282/T3V988JG
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ETD doctoral
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Open
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Hongju Gao
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Rutgers University. Graduate School - New Brunswick
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Non-exclusive ETD license
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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