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A research report subuutted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science. Degree awarded with distinction / This report describes a dynamic Quality of Service (QoS) - based call admission protocol tor distributed multimedia over ATM networks. The protocol incorporates the innovative idea of an extended QoS. This is a composite term which takes account of not only classic QoS multimedia measures, but also of the human aspect of the interaction through human receptivity. For this scenario, different QoS negotiation strategies have been formulated and then simulated with a view towards the establishment of a protocol knowledge base. Separately, a session pricing policy has been elaborated and its effect on user behaviour and network resource allocation studied. / Andrew Chakane 2018

by Cheng Siu Lung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1999. / Includes bibliographical references (leaves 81-86). / Abstracts in English and Chinese. / ABBREVIATION --- p.3 / INTRODUCTION --- p.9 / Chapter 1.1 --- Wireless ATM for multimedia application --- p.9 / Chapter 1.2 --- Challenges in Wireless ATM --- p.11 / Chapter 1.3 --- Outline of thesis --- p.14 / PREDICTIVE QUEUING MULTIPLE ACCESS --- p.17 / Chapter 2.1 --- Introduction --- p.17 / Chapter 2.2 --- Protocol for Mobile to Base --- p.20 / Chapter 2.3 --- Scheduling Protocol at the Base Station --- p.23 / Chapter 2.4 --- Rate Compatible Punctured Turbo code --- p.27 / Chapter 2.5 --- FEC and ARQ methodologies --- p.30 / Chapter 2.6 --- Experimental Results --- p.32 / Chapter 2.7 --- Conclusion --- p.34 / FUNDAMENTALS OF THE WIRELESS COMMUNICATION MEDIUM --- p.36 / Chapter 3.1 --- Introduction --- p.36 / Chapter 3.2 --- Error control and channel capacity --- p.38 / Chapter 3.3 --- Capacity of fading channel --- p.39 / ITERATIVE CHANNEL ESTIMATION FOR TURBO CODE FOR FREQUENCY HOPPED MULTIPLE ACCESSING --- p.45 / Chapter 4.1 --- Introduction --- p.45 / Chapter 4.2. --- Turbo code structures --- p.47 / Chapter 4.3 --- System Model --- p.49 / Chapter 4.4 --- Iterative Channel Estimator --- p.53 / Chapter 4.5 --- Turbo decoding with iterative channel estimation --- p.56 / Chapter 4.6 --- Simulation Results --- p.58 / Chapter 4.7 --- Conclusion --- p.63 / DUMMY BITS INSERTED TURBO CODE --- p.64 / Chapter 5.1 --- Introduction --- p.64 / Chapter 5.2 --- Weight Distribution of turbo codes --- p.66 / Chapter 5.3 --- Encoding with dummy bit insertion --- p.69 / Chapter 5.3.1 --- Dummy bit insertion methodology --- p.69 / Chapter 5.3.2 --- Hybrid Periodic Random Interleaver --- p.70 / Chapter 5.3.3 --- Dummy bit removal before transmission --- p.71 / Chapter 5.4 --- Decoding with dummy signal enhancement --- p.73 / Chapter 5.5 --- Weight distribution of dummy bit inserted turbo coding --- p.76 / Chapter 5.6 --- Simulation results --- p.77 / Chapter 5.7 --- Summary --- p.79 / REFERENCES --- p.81

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