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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Applications of optical orthogonal modulation schemes in optical networks.

January 2004 (has links)
Yang Yi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 51-55). / Abstracts in English and Chinese. / ACKNOWLEDGEMENTS --- p.II / ABSTRACT --- p.III / 摘要 --- p.IV / CONTENTS --- p.V / Chapter CHAPTER 1: --- INTRODUCTION --- p.1 / Chapter 1.1. --- Modulation Formats in Optical Communication SYSTEMS --- p.2 / Chapter 1.1.1 --- Optical ASK Format --- p.3 / Chapter 1.1.2 --- Optical FSK Format --- p.4 / Chapter 1.1.3 --- Optical PSK Format --- p.5 / Chapter 1.1.4 --- Optical Orthogonal Modulation --- p.7 / Chapter 1.2. --- All-Optical Packet Switching --- p.8 / Chapter 1.2.1 --- AOLS Using Subcarrier Labels --- p.9 / Chapter 1.2.2 --- Serial Labels --- p.10 / Chapter 1.2.3 --- Orthogonal Modulated Labels --- p.12 / Chapter 1.3. --- Optical Supervisory Control --- p.13 / Chapter 1.3.1 --- OXC Supervisory Schemes --- p.13 / Chapter 1.3.2 --- Optical A mplifier Supervisory Schemes --- p.14 / Chapter 1.3.3 --- Optical Supervisory Schemes for Transmission Networks --- p.15 / Chapter 1.4. --- Thesis Organization --- p.16 / Chapter CHAPTER 2: --- PREVIOUS STUDIES ON OPTICAL ORTHOGONAL MODULATION….… --- p.17 / Chapter 2.1. --- Orthogonal Modulation Used in STARNET --- p.17 / Chapter 2.2. --- AOLS in IP-over-WDM Networks Employing Orthogonal Modulation --- p.18 / Chapter 2.2.1 --- DPSK Labels on ASK Payload --- p.18 / Chapter 2.2.2 --- FSK Labels on ASK Payload --- p.20 / Chapter 2.2.3 --- Experimental Result of ASK/DPSK Label Swapping --- p.21 / Chapter 2.3. --- Quaternary Optical ASK-DPSK Modulation --- p.22 / Chapter 2.4. --- Conclusion --- p.23 / Chapter CHAPTER 3: --- OPTICAL DPSK/ASK ORTHOGONAL MODULATION SCHEME --- p.24 / Chapter 3.1. --- motivation --- p.24 / Chapter 3.2. --- Proposed Optical DPSK/ASK Orthogonal Modulation Scheme --- p.25 / Chapter 3.3. --- DPSK/ASK orthogonal modulation modules --- p.26 / Chapter 3.4. --- Numerical Simulations --- p.27 / Chapter 3.4.1 --- Mathematical Model of DPSK/ASK Signal --- p.28 / Chapter 3.4.2 --- Simulation Model --- p.31 / Chapter 3.4.3 --- Simulation Results --- p.32 / Chapter 3.5. --- Experimental Demonstration --- p.34 / Chapter 3.5.1 --- Experimental Setup --- p.34 / Chapter 3.5.2 --- Experimental Results --- p.36 / Chapter 3.6. --- transmission experiment --- p.38 / Chapter 3.7. --- Supervisory Information Dissemination Using DPSK/ASK Orthogonal Modulation --- p.41 / Chapter 3.8. --- Label Swapping Experiment and Results --- p.42 / Chapter 3.8.1 --- Experiment Setup --- p.42 / Chapter 3.8.2 --- Experiment Results --- p.45 / Chapter CHAPTER 4: --- CONCLUSION --- p.48 / Chapter 4.1. --- Thesis Summary --- p.48 / Chapter 4.2. --- Future Work --- p.49 / LIST OF PUBLICATIONS --- p.50 / REFERENCES --- p.51
12

Scalable design of optical burst switch based on deflection routing.

January 2004 (has links)
Deng Yun. / Thesis submitted in: July 2003. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 54-56). / Abstracts in English and Chinese. / Acknowledgments --- p.ii / 摘要 --- p.iii / Abstract --- p.v / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Optical Switching --- p.1 / Chapter 1.1.1 --- Optical Circuit Switching --- p.2 / Chapter 1.1.2 --- Optical Packet Switching --- p.3 / Chapter 1.1.3 --- Optical Burst Switching --- p.4 / Chapter 1.2 --- Design of Optical Burst Switching Node --- p.8 / Chapter 1.2.1 --- Burst Switched Network Architecture --- p.8 / Chapter 1.2.2 --- Design of Optical Burst Switching Node --- p.10 / Chapter 1.2.3 --- Scalable Architecture With Multi-plane Fabric --- p.12 / Chapter 1.3 --- Organization --- p.13 / Chapter Chapter 2 --- Proposed OBS Node and Blocking probability due to Output Contention --- p.14 / Chapter 2.1 --- OBS Node Architecture --- p.14 / Chapter 2.2 --- Burst Traffic Model --- p.16 / Chapter 2.3 --- Blocking Probability due to Output Contention --- p.17 / Chapter 2.4 --- Poisson Approximation of Burst Traffic --- p.19 / Chapter 2.5 --- Simulation Results --- p.21 / Chapter Chapter 3 --- Deflection Routed Switch Based on Shuffle-exchange network and Burst Loss Rate due to Insufficient Number of Stages --- p.22 / Chapter 3.1 --- Architecture of Shuffle-exchange Network --- p.22 / Chapter 3.2 --- The traffic loading entering into the second stage --- p.23 / Chapter 3.3 --- The Deflection Probability in a 2x2 Switching Module of SN --- p.26 / Chapter 3.4 --- Analysis of Burst Loss Rate due to Insufficient Number of Stages in SN --- p.27 / Chapter 3.5 --- Total Burst Loss Probability --- p.30 / Chapter 3.6 --- Multi-plane Architecture --- p.32 / Chapter 3.6.1 --- Relationship between k and loading of SN --- p.33 / Chapter 3.6.2 --- Relationship between k and n: Log2(Number of input-output ports) --- p.36 / Chapter 3.6.3 --- The result of appropriate number of planes k --- p.38 / Chapter Chapter 4 --- Switch Based on Dual Shuffle-exchange network and Comparison with Shuffle-exchange network --- p.40 / Chapter 4.1 --- Architecture of Dual Shuffle-exchange Network --- p.40 / Chapter 4.2 --- The deflection Probability in a 4x4 Switching Module of DSN --- p.41 / Chapter 4.3 --- Burst Loss Rate due to Insufficient Number of Stages of DSN --- p.43 / Chapter 4.4 --- Comparison of SN and DSN --- p.45 / Chapter 4.4.1 --- Comparison with different n --- p.47 / Chapter 4.4.2 --- Comparison with different loading --- p.48 / Chapter 4.4.3 --- The result of comparison --- p.49 / Chapter Chapter 5 --- Conclusions --- p.50 / Chapter 5.1 --- The Burst Loss Probability of Proposed OBS Based on SN --- p.51 / Chapter 5.2 --- The multi-plane Fabric with appropriate number of planes k --- p.51 / Chapter 5.3 --- Performance of OBS Design Based on DSN and Comparison of SN and DSN --- p.52 / Bibliography --- p.54
13

A load-sensitive multicast routing protocol.

January 2004 (has links)
Wong Kar Yiu. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 109-111). / Abstracts in English and Chinese. / Abstract --- p.ii / Acknowledgement --- p.iv / Table of Contents --- p.v / List of Figure --- p.vii / Chapter Chapter 1. --- Introduction --- p.9 / Chapter 1.1 --- Introduction --- p.9 / Chapter 1.2 --- Background --- p.11 / Chapter 1.3 --- Ant Colony Optimization (ACO) --- p.15 / Chapter 1.4 --- Main contribution --- p.16 / Chapter 1.5 --- Thesis organization --- p.18 / Chapter Chapter 2. --- Related Work --- p.19 / Chapter 2.1 --- Multicast routing in general --- p.19 / Chapter 2.2 --- Multicast routing techniques --- p.22 / Chapter 2.3 --- Best-effort multicast routing --- p.25 / Chapter 2.4 --- Quality-of-Service (QoS) multicast routing --- p.30 / Chapter 2.5 --- Adaptive multicast routing --- p.34 / Chapter Chapter 3. --- Load-Sensitive Multicast Routing Protocol (LSMRP) --- p.37 / Chapter 3.1 --- Overview --- p.37 / Chapter 3.2 --- Problem Formulation --- p.37 / Chapter 3.3 --- Types of ant in LSMRP --- p.39 / Chapter 3.3.1 --- Forward Ants --- p.39 / Chapter 3.3.2 --- Random Ants --- p.41 / Chapter 3.3.3 --- Backward Ants --- p.42 / Chapter 3.3.4 --- Multicast Ants --- p.44 / Chapter 3.3.5 --- Multicast Backward Ants --- p.44 / Chapter 3.4 --- Global Algorithm --- p.47 / Chapter 3.4.1 --- Pheromone trails stage --- p.50 / Chapter 3.4.2 --- Multicast tree stage --- p.53 / Chapter 3.4.3 --- Routing table --- p.56 / Chapter 3.4.4 --- Messages Exchange and Mechanisms --- p.57 / Chapter 3.4.5 --- mapping --- p.58 / Chapter 3.4.6 --- Members join --- p.59 / Chapter 3.4.7 --- Members update --- p.59 / Chapter 3.4.8 --- Members leave --- p.61 / Chapter Chapter 4. --- Analysis of LSMRP --- p.63 / Chapter 4.1 --- Analysis of pheromone trail values --- p.63 / Chapter Chapter 5. --- Evaluation and Experimental Results --- p.80 / Chapter 5.1 --- System model --- p.80 / Chapter 5.2 --- Result --- p.84 / Chapter 5.2.1 --- Packets received --- p.84 / Chapter 5.2.2 --- Throughput --- p.86 / Chapter 5.2.3 --- Packet Loss --- p.98 / Chapter Chapter 6. --- Conclusion --- p.107 / Chapter 6.1 --- Future work/ open question --- p.107 / References --- p.109
14

Applications of optical frequency shift keying modulation format in optical networks.

January 2004 (has links)
Deng Ning. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 62-65). / Abstracts in English and Chinese. / ABSTRACT --- p.iii / 摘要 --- p.v / Chapter 1 --- BACKGROUND AND INTRODUCTION --- p.1 / Chapter 1.1 --- Optical Frequency-Shift Keying (FSK) --- p.1 / Chapter 1.1.1 --- Basic concepts and research hotspots of optical FSK --- p.1 / Chapter 1.1.2 --- Optical FSK Transmitter and Receiver --- p.3 / Chapter 1.2 --- Wavelength Division Multiplexing Optical Passive Networks --- p.8 / Chapter 1.3 --- Optical Label Switching (OLS) Networks --- p.10 / Chapter 1.4 --- Thesis Contribution and Organization --- p.11 / Chapter 2 --- DATA RE-MODULATION ON DOWNSTREAM OPTICAL FSK SIGNALS IN WDM-PONS --- p.12 / Chapter 2.1 --- overview of related works --- p.12 / Chapter 2.2 --- PON ARCHITIiCTURE USING DOWNSTREAM OPTICAL FSK SIGNALS --- p.13 / Chapter 2.3 --- CLS PON DEMONSTRATION USING THREE DIFFERENT OPTICAL FSK TRANSMITTERS --- p.14 / Chapter 2.3.1 --- With an optical FSK transmitter based on direct modulation in a DFB laser --- p.14 / Chapter 2.3.2 --- With an optical FSK transmitter based on complementary intensity modulation --- p.17 / Chapter 2.3.3 --- With our proposed optical FSK transmitter based on phase modulation --- p.21 / Chapter 2.4 --- System Performance by Using Phase Modulation Based FSK Transmitter…… --- p.26 / Chapter 2.4.1 --- Wavelength detune of light sources --- p.27 / Chapter 2.4.2 --- Detune of the DI frequency response --- p.29 / Chapter 2.4.3 --- Dispersion tolerance --- p.30 / Chapter 2.5 --- Summary --- p.32 / Chapter 3 --- INTENSITY-MODULATED LABELLING ON OPTICAL FSK OR DPSK PAYLOADS IN OLS NETWORKS --- p.34 / Chapter 3.1 --- Existing Labelling Schemes and Their Features --- p.34 / Chapter 3.1.1 --- Bit serial labelling --- p.35 / Chapter 3.1.2 --- Subcarrier multiplexed (SCM) labelling --- p.36 / Chapter 3.1.3 --- Orthogonally modulated labelling --- p.37 / Chapter 3.2 --- The Proposed 00K Labelling Scheme and OLS System Architecture --- p.38 / Chapter 3.3 --- All-Optical Label Swapping and Other Critical Issues --- p.39 / Chapter 3.4 --- System demonstration --- p.40 / Chapter 3.5 --- Summary --- p.45 / Chapter 4 --- PERFORMANCE CHARACTERIZATION OF THE ASK/FSK AND ASK/DPSK ORTHOGONAL SIGNALS --- p.46 / Chapter 4.1 --- Introduction and Formulation --- p.46 / Chapter 4.2 --- Theoretical Analysis --- p.48 / Chapter 4.2.1 --- Optical ASK performance in orthogonal signals --- p.48 / Chapter 4.2.2 --- Optical FSK performance in ASK/FSK signals --- p.49 / Chapter 4.2.3 --- Optical DPSK performance in ASK/DPSK signals --- p.51 / Chapter 4.3 --- Analytical and Experimental Results --- p.55 / Chapter 4.4 --- Conclusion --- p.57 / Chapter 5 --- SUMMARY --- p.58 / Chapter 5.1 --- Thesis Summary --- p.58 / Chapter 5.2 --- Future Work --- p.59 / LIST OF PUBLICATIONS --- p.61 / REFERENCES --- p.62
15

Designing a large scale switch interconnection architecture and a study of ATM scheduling algorithms.

January 1997 (has links)
by Yee Ka Chi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (leaves 101-[106]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.1.1 --- Large Scale Switch Interconnections --- p.2 / Chapter 1.1.2 --- Multichannel Switching and Resequencing --- p.6 / Chapter 1.1.3 --- Scheduling --- p.7 / Chapter 2 --- Hierarchical Banyan Switch Interconnection --- p.12 / Chapter 2.1 --- Introduction --- p.12 / Chapter 2.2 --- Switch Architecture --- p.13 / Chapter 2.3 --- Switch Operation --- p.19 / Chapter 2.3.1 --- Call Setup --- p.19 / Chapter 2.3.2 --- Cell Routing --- p.21 / Chapter 2.3.3 --- Fault Tolerance --- p.27 / Chapter 2.4 --- Call Blocking Analysis --- p.28 / Chapter 2.4.1 --- Dilated Banyan --- p.29 / Chapter 2.4.2 --- Dilated Benes Network --- p.30 / Chapter 2.4.3 --- HBSI --- p.30 / Chapter 2.5 --- Results and Discussions --- p.31 / Chapter 2.6 --- Summary --- p.37 / Chapter 3 --- Multichannel Switching and Resequencing --- p.40 / Chapter 3.1 --- Introduction --- p.40 / Chapter 3.2 --- Channel Assignment --- p.41 / Chapter 3.2.1 --- VC-Based Channel Allocation Mechanism --- p.41 / Chapter 3.2.2 --- Port-Based Channel Allocation Mechanism --- p.45 / Chapter 3.2.3 --- Trunk-Based Channel Allocation Mechanism --- p.46 / Chapter 3.3 --- Resequencer --- p.50 / Chapter 3.3.1 --- Resequencing Algorithm --- p.50 / Chapter 3.4 --- Results and Discussion --- p.55 / Chapter 3.5 --- Summary --- p.60 / Chapter 4 --- Scheduling --- p.62 / Chapter 4.1 --- Introduction --- p.62 / Chapter 4.2 --- Virtual Clock Scheduling (VCS) --- p.62 / Chapter 4.3 --- Gated Virtual Clock Scheduling (GVCS) --- p.70 / Chapter 4.4 --- Time-Priority Model --- p.75 / Chapter 4.5 --- Programmable Rate-based Scheduler (PRS) --- p.80 / Chapter 4.6 --- Integration with Resequencer --- p.83 / Chapter 4.7 --- Results and Discussions --- p.86 / Chapter 4.8 --- Summary --- p.96 / Chapter 5 --- Conclusion --- p.99 / Bibliography --- p.101
16

WHITE : achieving fair bandwidth allocation with priority dropping based on round trip times

Lee, Choong-Soo. January 2002 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: fair active queue management; RED; CSFQ; DRR; round trip time. Includes bibliographical references (p. 53-55).
17

Differentiated quality of service in packet-switching networks /

Wang, Xinyu, January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 132-139).
18

A delay-efficient rerouting scheme for voice over ip traffic

Kamat, Narasinha. January 2002 (has links)
Thesis (M.S.)--University of Florida, 2002. / Title from title page of source document. Includes vita. Includes bibliographical references.
19

Routing protocols in all-optical packet switched networks /

Yuan, Xiaochun, January 2002 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 98-103).
20

Addressing the memory bottleneck in packet processing systems

Mudigonda, Jayaram 28 August 2008 (has links)
Not available / text

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