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Regenerator placement and fault management in multi-wavelength optical networks.January 2011 (has links)
Shen, Dong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (p. 98-106). / Abstracts in English and Chinese. / Abstract --- p.i / 摘要 --- p.iv / Acknowledgements --- p.v / Table of Contents --- p.vi / Chapter Chapter 1 --- Background --- p.1 / Chapter 1.1 --- Translucent Optical Networks --- p.1 / Chapter 1.1.1 --- The Way Towards Translucent --- p.1 / Chapter 1.1.2 --- Translucent Optical Network Architecture Design and Planning --- p.3 / Chapter 1.1.3 --- Other Research Topics in Translucent Optical Networks --- p.6 / Chapter 1.2 --- Fault Monitoring in All-Optical Networks --- p.12 / Chapter 1.2.1 --- Fault Monitoring in Network Layer's Perspective --- p.12 / Chapter 1.2.2 --- Passive Optical Monitoring --- p.14 / Chapter 1.2.3 --- Proactive Optical Monitoring --- p.16 / Chapter 1.3 --- Contributions --- p.17 / Chapter 1.3.1 --- Translucent Optical Network Planning with Heterogeneous Modulation Formats --- p.17 / Chapter 1.3.2 --- Multiplexing Optimization in Translucent Optical Networks --- p.19 / Chapter 1.3.3 --- An Efficient Regenerator Placement and Wavelength Assignment Scheme in Translucent Optical Networks --- p.20 / Chapter 1.3.4 --- Adaptive Fault Monitoring in All-Optical Networks Utilizing Real-Time Data Traffic --- p.20 / Chapter 1.4 --- Organization of Thesis --- p.22 / Chapter Chapter 2 --- Regenerator Placement and Resource Allocation Optimization in Translucent Optical Networks --- p.23 / Chapter 2.1 --- Introduction --- p.23 / Chapter 2.2 --- Translucent Optical Network Planning with Heterogeneous Modulation Formats --- p.25 / Chapter 2.2.1 --- Motivation and Problem Statements --- p.25 / Chapter 2.2.2 --- A Two-Step Planning Algorithm Using Two Modulation Formats to Realize Any-to-Any Topology Connectivity --- p.28 / Chapter 2.2.3 --- Illustrative Examples --- p.30 / Chapter 2.2.3 --- ILP Formulation of Minimizing Translucent Optical Network Cost with Two Modulation Formats under Static Traffic Demands --- p.34 / Chapter 2.2.4 --- Illustrative Numeric Examples --- p.42 / Chapter 2.3 --- Resource Allocation Optimization in Translucent Optical Networks --- p.45 / Chapter 2.3.1 --- Multiplexing Optimization with Auxiliary Graph --- p.45 / Chapter 2.3.2 --- Simulation Study of Proposed Algorithm --- p.51 / Chapter 2.3.3 --- An Efficient Regenerator Placement and Wavelength Assignment Solution --- p.55 / Chapter 2.3.4 --- Simulation Study of Proposed Algorithm --- p.60 / Chapter 2.4 --- Summary --- p.64 / Chapter Chapter 3 --- Adaptive Fault Monitoring in All-Optical Networks Utilizing Real-Time Data Traffic --- p.65 / Chapter 3.1 --- Introduction --- p.65 / Chapter 3.2 --- Adaptive Fault Monitoring --- p.68 / Chapter 3.2.1 --- System Framework --- p.68 / Chapter 3.2.2 --- Phase 1: Passive Monitoring --- p.70 / Chapter 3.2.3 --- Phase 2: Proactive Probing --- p.71 / Chapter 3.2.4 --- Control Plane Design and Analysis --- p.80 / Chapter 3.2.5 --- Physical Layer Implementation and Suggestions --- p.83 / Chapter 3.3 --- Placement of Label Monitors --- p.83 / Chapter 3.3.1 --- ILP Formulation --- p.84 / Chapter 3.3.2 --- Simulation Studies --- p.86 / Chapter 3.3.3 --- Discussion of Topology Evolution Adaptiveness --- p.93 / Chapter 3.4 --- Summary --- p.95 / Chapter Chapter 4 --- Conclusions and Future Work --- p.95 / Chapter 4.1 --- Conclusions --- p.96 / Chapter 4.2 --- Future Work --- p.97 / Bibliography --- p.98 / Publications during M.Phil Study --- p.105
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QoS-aware adaptive call admission control in multiuser OFDM wireless network.January 2008 (has links)
Yu, Xi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 46-49). / Abstracts in English and Chinese. / Acknowledgement --- p.i / Abstract --- p.ii / Chapter Chapter 1 --- Introduction and Background --- p.1 / Chapter 1.1 --- Background --- p.3 / Chapter 1.1.1 --- Brief Review of CAC --- p.3 / Chapter 1.1.2 --- Dynamic Sub-carrier Allocation in Multi-user OFDM Wireless Network --- p.6 / Chapter 1.2 --- Problem Statement --- p.11 / Chapter 1.3 --- The Organization of The Thesis --- p.12 / Chapter Chapter2 --- System Model and Call Admission Control Framework --- p.13 / Chapter 2.1 --- System setup --- p.13 / Chapter 2.2 --- The CAC Strategy Framework --- p.14 / Chapter Chapter 3 --- QoS-aware Adaptive Call Admission Control´ؤStep One: The QoS-Provisioning CAC --- p.18 / Chapter 3.1 --- Problem Formulation --- p.19 / Chapter 3.2 --- Optimal Condition Analysis --- p.21 / Chapter 3.3 --- Throughput Estimation Algorithm --- p.22 / Chapter 3.4 --- QoS-Provisioning CAC --- p.25 / Chapter 3.5 --- Performance Evaluation --- p.26 / Chapter Chapter 4 --- QoS-aware Adaptive Call Admission Control´ؤStep Two: Average Revenue Maximization CAC --- p.30 / Chapter 4.1 --- Semi-Markov Decision Process --- p.30 / Chapter 4.2 --- Investigation of Algorithms for SMDP --- p.34 / Chapter 4.3 --- The Average Revenue Maximum CAC --- p.37 / Chapter 4.4 --- Performance Evaluation --- p.40 / Chapter Chapter 5 --- Conclusion and Future Work --- p.44 / Bibliography --- p.46
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Internetworking architectures for optical network units in a wavelength division multiplexed passive optical network.January 2007 (has links)
Zhao, Qiguang. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 72-76). / Abstracts in English and Chinese. / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Telecommunications network hierarchy --- p.2 / Chapter 1.2 --- PON architectures for access networks --- p.4 / Chapter 1.2.1 --- TDM-PON --- p.5 / Chapter 1.2.2 --- WDM-PON --- p.7 / Chapter 1.3 --- Motivation of this thesis --- p.8 / Chapter 1.4 --- Outline of this thesis --- p.11 / Chapter Chapter 2 --- Previous Internetworking Architectures for Optical Network Units in Passive Optical Networks --- p.12 / Chapter 2.1 --- Introduction --- p.13 / Chapter 2.2 --- Previous internetworking architectures with ONU-broadcast capability / Chapter 2.2.1 --- Virtual ring network construction --- p.14 / Chapter 2.2.2 --- Reflection mechanism employing a FBG --- p.15 / Chapter 2.2.3 --- Loop-back mechanism in TDM-PON --- p.16 / Chapter 2.3 --- Previous internetworking architectures with ONU-VPGs formation capability --- p.17 / Chapter 2.3.1 --- E-CDMA application --- p.17 / Chapter 2.3.2 --- SCM technique --- p.18 / Chapter 2.3.3 --- Reflective waveband grouping mechanism --- p.20 / Chapter 2.4 --- Previous protection scheme for internetworking architectures --- p.21 / Chapter 2.4.1 --- Local ring protection in TDM-PON --- p.21 / Chapter 2.5 --- Summary --- p.22 / Chapter Chapter 3 --- Novel Internetworking Architecture with ONU-Broadcast Capability in a WDM-PON --- p.24 / Chapter 3.1 --- Introduction --- p.25 / Chapter 3.2 --- Network topology and wavelength assignment --- p.26 / Chapter 3.3 --- Operation principle --- p.27 / Chapter 3.4 --- Experimental demonstration --- p.31 / Chapter 3.5 --- Power budget and scalability --- p.34 / Chapter 3.6 --- Summary --- p.36 / Chapter Chapter 4 --- Novel Internetworking Architectures with ONU- VPGs Formation Capability in a WDM-PON --- p.37 / Chapter 4.1 --- Introduction --- p.38 / Chapter 4.2 --- Novel architecture with ONU-VPGs formation based on RF tone technique --- p.39 / Chapter 4.2.1 --- Introduction --- p.39 / Chapter 4.2.2 --- Network topology and wavelength assignment --- p.40 / Chapter 4.2.3 --- Media access control protocol: CSMA/CA protocol --- p.42 / Chapter 4.2.4 --- Experimental demonstration --- p.43 / Chapter 4.2.5 --- Discussion --- p.47 / Chapter 4.2.6 --- Summary --- p.49 / Chapter 4.3 --- Novel architecture with ONU-VPGs formation in optical layer --- p.51 / Chapter 4.3.1 --- Introduction --- p.51 / Chapter 4.3.2 --- Network topology and wavelength assignment --- p.51 / Chapter 4.3.3 --- Operation principle --- p.54 / Chapter 4.3.4 --- Experimental demonstration --- p.56 / Chapter 4.3.5 --- Discussion --- p.58 / Chapter 4.3.6 --- Summary --- p.65 / Chapter 4.4 --- Comparisons --- p.66 / Chapter 4.5 --- Summary --- p.67 / Chapter Chapter 5 --- Summary and Future Works --- p.68 / Chapter 5.1 --- Summary of the thesis --- p.69 / Chapter 5.2 --- Future works --- p.70 / LIST OF PUBLICATIONS --- p.71 / BIBLIOGRAPHY --- p.72
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Simple star multihop optical networkChonbodeechalermroong, Yongyut, School of Electrical Engineering, UNSW January 2001 (has links)
A new multihop wavelength-division multiplexed (WDM) optical network designed for uniform traffic with two wavelengths per node that can give the maximum throughput and minimum delay is proposed. It is called a 'Simple Star' multihop optical network. This network has good characteristics in traffic balance and small average number of hops. Moreover, Simple Star can be used together with multiple star couplers to reduce the number of wavelength used. Furthermore, unlike most existing networks, this network does not impose an upper limit to the number of nodes. Another interesting pattern is Simple Star with Center Node (Simple Star CN) particularly for prime numbers of nodes. It can be shown that the average number of hops of Simple Star (normal plus CN) is in between those of Shufflenet and Kautz, but the throughput and delay are better. An associated network called Simple Star Shared Channel (Simple Star SC) for two transceivers per node is also presented and it can be used together with multiple star couplers to reduce the number of wavelengths. An example of a 16-node Simple Star SC shows that the number of wavelengths used can be 8 times less than that in the normal Simple Star network. The Shared Channel simulation model is based on the concept of CSMA/CD (Carrier Sense Multiple Access with Collision Detection).
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Cross-layer design for OFDMA wireless systemHui, Shui-wing, David. January 2007 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.
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Random bit interleaving for trunk link encryptionEinicke, Garry A. (Garry Allan) January 1990 (has links) (PDF)
Bibliography: leaves 112-115
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Development of a multiplexing strategy for whole genome scans of the domestic dog and analysis of hereditary deafness in the DalmatianCargill, Edward James 29 August 2005 (has links)
The Dalmatian is affected by deafness more than any other breed of domestic dog, with 30% of the United States population suffering from unilateral or bilateral deafness. The genetic origin of deafness in the Dalmatian is unknown. The objective of this work was to identify, using linkage analysis, any chromosomal region(s) in which the gene(s) responsible for deafness in the Dalmatian may be located. To achieve this objective it was necessary to 1) develop multiplexed microsatellite markers for an efficient whole genome scan, 2) assemble a multigenerational Dalmatian kindred segregating deafness, 3) estimate the heritability of deafness and perform complex segregation analysis, and 4) perform linkage analysis of deafness, and other phenotypic traits, in the Dalmatian kindred. A set of 172 microsatellite markers, termed Minimal Screening Set 1 (MSS1), was characterized, prior to this work, for whole genome scans of the domestic dog. 155 of the MSS1 markers were multiplexed into 48 multiplex sets. Amplification of the multiplex sets was achieved using a single thermal cycling program. The markers were labeled with fluorescent dyes and optimized for resolution on an ABI 310 Genetic Analyzer or ABI 377 Sequencer. A kindred of 266 Dalmatians was assembled, of which 199 had been diagnosed using the brainstem auditory evoked response to determine auditory status. Of these, 74.4% (N = 148) had normal hearing, 18.1% (N = 36) were unilaterally deaf, and 7.5% (N = 15) were bilaterally deaf. A heritability of 0.73 was estimated considering deafness a dichotomous trait and 0.75 as a trichotomous trait. Although deafness in the Dalmatian is clearly heritable, the evidence for the presence of a major gene affecting the disorder was not persuasive. Dalmatians (N = 117) from the assembled kindred were genotyped for the MSS1 markers (149 were polymorphic). Linkage analysis was performed for deafness, eye color, and spot color. The maximum LOD scores for deafness were found with markers Cos15 on CFA17 (LOD = 1.69) and FH2585 on CFA28 (LOD = 1.34). No significant linkage was found with eye color. Significant linkage for spot color was found with marker FH2319 (LOD = 9.7) on CFA11.
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Ultra-thin Thin-film Filters and Their Applications on WDM SystemsChou, Tzu-Hung 14 June 2005 (has links)
The subject of this dissertation is to use precision cutting and polishing techniques to fabricate thin-film filters(TFFs) with a thickness of less than 100 £gm, and to discuss their applications in Wavelength Division Multiplexing(WDM) systems. To demonstrate the feasibility of the proposed technology, Si benches with wet-etching V grooves for precision fiber positioning and saw-cutting U grooves for placing the TFFs were fabricated. The insertion loss of the bench at 1.55 £gm input lights is less than - 0.5 dB.
In addition, the stress induced pass band variations of band-pass TFF for Coarse WDM(CWDM) applications were studied. The pass band width of the band-pass TFF is 20 nm. After reducing the thickness of the 1.5 mm ¡Ñ 1.5 mm BP TFF to a thickness of 50 £gm, the center wavelength shift and pass band reduction are 4.64 nm and 1.54 nm, respectively.
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Development of a multiplexing strategy for whole genome scans of the domestic dog and analysis of hereditary deafness in the DalmatianCargill, Edward James 29 August 2005 (has links)
The Dalmatian is affected by deafness more than any other breed of domestic dog, with 30% of the United States population suffering from unilateral or bilateral deafness. The genetic origin of deafness in the Dalmatian is unknown. The objective of this work was to identify, using linkage analysis, any chromosomal region(s) in which the gene(s) responsible for deafness in the Dalmatian may be located. To achieve this objective it was necessary to 1) develop multiplexed microsatellite markers for an efficient whole genome scan, 2) assemble a multigenerational Dalmatian kindred segregating deafness, 3) estimate the heritability of deafness and perform complex segregation analysis, and 4) perform linkage analysis of deafness, and other phenotypic traits, in the Dalmatian kindred. A set of 172 microsatellite markers, termed Minimal Screening Set 1 (MSS1), was characterized, prior to this work, for whole genome scans of the domestic dog. 155 of the MSS1 markers were multiplexed into 48 multiplex sets. Amplification of the multiplex sets was achieved using a single thermal cycling program. The markers were labeled with fluorescent dyes and optimized for resolution on an ABI 310 Genetic Analyzer or ABI 377 Sequencer. A kindred of 266 Dalmatians was assembled, of which 199 had been diagnosed using the brainstem auditory evoked response to determine auditory status. Of these, 74.4% (N = 148) had normal hearing, 18.1% (N = 36) were unilaterally deaf, and 7.5% (N = 15) were bilaterally deaf. A heritability of 0.73 was estimated considering deafness a dichotomous trait and 0.75 as a trichotomous trait. Although deafness in the Dalmatian is clearly heritable, the evidence for the presence of a major gene affecting the disorder was not persuasive. Dalmatians (N = 117) from the assembled kindred were genotyped for the MSS1 markers (149 were polymorphic). Linkage analysis was performed for deafness, eye color, and spot color. The maximum LOD scores for deafness were found with markers Cos15 on CFA17 (LOD = 1.69) and FH2585 on CFA28 (LOD = 1.34). No significant linkage was found with eye color. Significant linkage for spot color was found with marker FH2319 (LOD = 9.7) on CFA11.
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Compensation of nonlinear distortion and frequency offset in OFDM systemsChang, Sekchin, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI/Dissertation Abstracts International.
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