Cross-layer protocol design and performance study for wideband wireless networks

Description

This thesis presents a cross-layer design and optimization for emerging wideband wireless networks supporting multimedia applications, considering the interactions of the wireless channel characteristics, the physical and link layer protocols, and the user-perceived Quality-of-Service (QoS). As wireless channels are error-prone and broadcast in nature, both the error control mechanisms and the Media Access Control (MAC) protocols are critical for resource utilization and QoS provisioning. How to analyze, design and optimize the high-rate wireless networks by considering the characteristics of the propagation channels and wideband communication technologies is an open, challenging issue.

In this thesis, we consider two important wideband wireless systems, the Ultra-Wideband (UWB) and the Orthogonal Frequency-Division Multiplexing (OFDM) systems. First, we propose the packet-level channel models based on Finite State Markov Chains (FSMCs) for the two systems, which present the statistical properties of the propagation channels and the transmission systems. Second, by incorporating the proposed packet-level channel models, we develop analytical frameworks for quantifying the performance of the high-rate wireless networks, combining the channel fading, physical- and link-layer error-control mechanisms and MAC protocols. Third, to mitigate the impact of channel fading and impairments, a cross-layer joint error-control mechanism is proposed. In addition, we also investigate the impact of channel fading on the video streaming applications, and propose a simple admission control algorithm to ensure QoS.

As considering the physical-layer characteristics is critical for ensuring QoS and efficiency of resource utilization, the packet-level channel models, cross-layer analytical frameworks, networking protocols and simulation methodologies proposed in this dissertation are essential for future proliferation of high-rate wireless networks.

Links & Downloads

1. http://hdl.handle.net/1828/2118
2. R. Zhang and L. Cai, “Joint AMC and packet fragmentation for error-control over fading channels,” IEEE Trans. Veh. Technol., accepted for publication, Dec. 2009.
3. R. Zhang, L. Cai, S. He, X. Dong, and J. Pan, “Modeling, validation and performance evaluation of body shadowing effect in ultra-wideband networks," ELSEVIER Physical Communication, vol. 2, no. 4, pp. 237-247, Dec. 2009.
4. R. Zhang and L. Cai, “packet-level model for UWB channel with people shadowing process based on angular spectrum analysis,” IEEE Trans. Wireless Commun., vol. 8, no. 8, pp. 4048-4055, Aug. 2009.
5. R. Zhang and L. Cai, “Markov modeling for data block transmission of OFDM systems over fading channels,” in Proc. IEEE ICC'09, Dresden, Germany, Jun. 2009.
6. R. Zhang and L. Cai, “Analysis of delayed acknowledgment scheme with packet fragmentation of UWB-based WPAN,” in Proc. IEEE Globecom'08, New Orleans, LA, USA, Nov. 2008.
7. R. Zhang and L. Cai, “Analyzing adaptive modulation and coding jointly with DRP and Dly-ACK for UWB-based WPAN," in Proc. IEEE Globecom'08, New Orleans, LA, USA, Nov. 2008.
8. R. Zhang and L. Cai, “Markov model for indoor Ultra-wideband channel with people shadowing,” ACM/Springer Mobile Networks and Applications (MONET): Special Issues on Mobility of Systems, Users, Data and Computing, vol. 12, no. 5-6, pp. 438-449, Dec. 2007.
9. R. Zhang and L. Cai, “Packet-level channel model for wireless OFDM systems,” in Proc. IEEE Globecom'07, Washington, DC, USA, Nov. 2007.
10. R. Zhang and L. Cai, “Modeling UWB indoor channel with shadowing processes,” in Proc. ICST QShine'07, Vancouver, BC, Canada, Aug. 2007.

Tags

cross-layer design

packet-level channel model

finite state Markov model

fading channels

UWB

body shadowing effect

multi-carrier communications

OFDM

error-control

MAC

AMC

ARQ

queueing process

admission control

IPTV streaming

WiMedia ECMA-368

IEEE 802.15.3

Additional Fields

Identifer	oai:union.ndltd.org:uvic.ca/oai:dspace.library.uvic.ca:1828/2118
Date	26 January 2010
Creators	Zhang, Ruonan
Contributors	Cai, Lin
Source Sets	University of Victoria
Language	English, English
Detected Language	English
Type	Thesis
Rights	Available to the World Wide Web