Dissertation (MBus) -- Auckland University of Technology, 2006. / Also held in print (78 leaves : col. ill. ; 30 cm.) in City Campus Theses Collection. (T 621.38456 FU)

Dissertation (MCIS - Computer and Information Sciences) -- AUT University, 2008. / Includes bibliographical references. Also held in print (vi, 52 leaves ; 30 cm.) in City Campus Theses Collection (T 621.38456 WAN)

Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: David S. Sibley. Vita. Includes bibliographical references. Also available from UMI.

by Kwok Ming Shan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 102-[109]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Cellular Radio Systems --- p.3 / Chapter 1.2 --- Code Division Multiple Access (CDMA) --- p.7 / Chapter 1.2.1 --- Direct Sequence CDMA (DS-CDMA) --- p.8 / Chapter 1.2.2 --- Frequency Hopping CDMA (FH-GDMA) --- p.11 / Chapter 1.2.3 --- Time Hopping CDMA (TH-CDMA) --- p.12 / Chapter 1.3 --- Propagation Characteristics --- p.12 / Chapter 1.3.1 --- Signal Strength Prediction - Path Loss --- p.13 / Chapter 1.3.2 --- Signal Variability --- p.17 / Chapter 1.3.3 --- Delay Spread --- p.23 / Chapter 1.3.4 --- Coherence Bandwidth --- p.23 / Chapter 1.4 --- Power Control in Cellular Radio Systems --- p.24 / Chapter 1.4.1 --- Centralized Power Control --- p.24 / Chapter 1.4.2 --- Distributed Power Control --- p.25 / Chapter 1.4.3 --- CDMA Power Control --- p.29 / Chapter 2 --- Contributions --- p.39 / Chapter 3 --- ACI Analysis of the Reverse-Link --- p.41 / Chapter 3.1 --- Adjacent Cell Interference --- p.42 / Chapter 3.2 --- Adjacent Cell Interference Analysis --- p.43 / Chapter 3.2.1 --- Interference Analysis of Hexagonal Cells --- p.43 / Chapter 3.2.2 --- Interference Analysis of Circular Cell Structure --- p.47 / Chapter 3.3 --- Closed-form of Adjacent Cell Interference --- p.51 / Chapter 3.4 --- Generalization to Irregular Cell Structure --- p.54 / Chapter 3.5 --- Conclusions --- p.57 / Chapter 4 --- ACI Analysis of Reverse-Link with Log-normal Shadowing --- p.59 / Chapter 4.1 --- Interference with Shadowing --- p.59 / Chapter 4.2 --- Conclusions --- p.66 / Chapter 5 --- ACI Analysis of Microcell --- p.68 / Chapter 5.1 --- Propagation Characteristics of Microcellular Radio Systems --- p.69 / Chapter 5.2 --- CDMA Microcellular Radio Systems --- p.70 / Chapter 5.3 --- Results and Discussions --- p.74 / Chapter 5.4 --- Conclusions --- p.76 / Chapter 6 --- Outage Probability Analysis of Imperfect Power Control --- p.77 / Chapter 6.1 --- Fast Fading of Signal --- p.78 / Chapter 6.2 --- Imperfect Power Control in CDMA --- p.81 / Chapter 6.3 --- Conclusions --- p.85 / Chapter 7 --- Conclusions --- p.88 / Chapter 8 --- Examples of CDMA Cellular Radio Systems --- p.91 / Chapter 8.1 --- Qualcomm CDMA system --- p.91 / Chapter 8.1.1 --- Forward-link --- p.92 / Chapter 8.1.2 --- Reverse-link --- p.93 / Chapter 8.1.3 --- Reverse-Link Open-Loop Power Control --- p.94 / Chapter 8.1.4 --- Reverse-Link Closed-Loop Power Control --- p.95 / Chapter 8.1.5 --- Forward-Link Power Control --- p.96 / Chapter 8.2 --- Interdigital Broadband CDMA System --- p.96 / Appendix --- p.97 / Chapter A --- Derivation of the PDF of the fast fading signal power --- p.97 / Chapter B --- Derivation of the Mean-to-standard deviation ratio --- p.98 / Chapter C --- Acronyms --- p.100 / Bibliography --- p.102

by Sung Chi Wan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 59-[63]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Design Issues in Mobile Communication Systems --- p.1 / Chapter 1.2 --- Radio Resource Management --- p.2 / Chapter 1.2.1 --- Constraint: Radio Interference --- p.2 / Chapter 1.2.2 --- Objective: High Capacity and Good Quality --- p.3 / Chapter 1.3 --- Channel Assignment --- p.3 / Chapter 1.3.1 --- Static Channel Assignment --- p.4 / Chapter 1.3.2 --- Dynamic Channel Assignment --- p.5 / Chapter 1.4 --- Review of Previous Results and Motivation --- p.6 / Chapter 1.5 --- Outline of the Thesis --- p.8 / Chapter 2 --- Static Channel Assignment --- p.9 / Chapter 2.1 --- Introduction --- p.9 / Chapter 2.2 --- Problem Formulation --- p.10 / Chapter 2.3 --- Pure Co channel Interference Case --- p.12 / Chapter 2.4 --- Systems of Special Structure --- p.16 / Chapter 2.5 --- Generalization of SP --- p.22 / Chapter 2.6 --- A Lower Bound for the General Case --- p.23 / Chapter 2.7 --- Numerical Examples --- p.25 / Chapter 2.8 --- Summary --- p.29 / Chapter 3 --- Dynamic Channel Assignment --- p.30 / Chapter 3.1 --- Introduction --- p.30 / Chapter 3.2 --- Distributed Packing Algorithm --- p.31 / Chapter 3.3 --- Performance Evaluation --- p.33 / Chapter 3.4 --- Summary --- p.38 / Chapter 4 --- Single-Channel User-Capacity Calculations --- p.39 / Chapter 4.1 --- Introduction --- p.39 / Chapter 4.2 --- Capacity as a Performance Measure --- p.40 / Chapter 4.3 --- Capacity of a Linear Celluar System --- p.41 / Chapter 4.4 --- Capacity of a 3-stripe Cellular System --- p.44 / Chapter 4.5 --- Summary --- p.46 / Chapter 5 --- Conclusion --- p.47 / Chapter 5.1 --- Summary of Results --- p.47 / Chapter 5.2 --- Suggestions for Further Research --- p.48 / Appendix --- p.49 / Chapter A --- On the Optimality of Sequential Packing --- p.49 / Chapter A.1 --- Graph Multi-coloring Problem --- p.49 / Chapter A.2 --- Sequential Packing Algorithm --- p.51 / Chapter A.3 --- Optimality of Sequential Packing --- p.52 / Chapter A.4 --- Concluding Remarks --- p.55 / Chapter B --- Derivation of the Capacity of 3-stripe system --- p.56 / Bibliography --- p.59

M. Tech. Information Networks / The study was undertaken to better understand the vast number of limitations in the use of mobile devices such as screen size, navigation, colour and network limitations. The aim of this study is to identify usability problems within the user interface design of mobile device instant messaging applications. The usability of three mobile instant messaging applications (MXit, Nimbuzz and Whatsapp) will be evaluated on three different high end touch screen smart phones (Apple iPhone 4, BlackBerry Torch 9800 and Nokia N8)

South Africans have had a passionate affair with cellular telephony since its launch in June 1994. But, by far the networks contract-less prepaid service has been an outstanding success, attracting hundreds of thousands of users who could not have otherwise been part of the subscriber base. The prepaid service has made cellular telephony accessible to all, especially the youth/student market. The author investigated the reasons into why students at Cape Technikon chose the prepaid service over the contract service and whether student allowance/ income affected the choice exercised. The prepaid system was voted as being most popular. Income levels had a direct bearing on the choice that students made but other factors such as perception, culture and socio-economic play a role in shaping the choices made. The most important factor to students was that no monthly bills were involved and total control over spending could be exercised. Recommendations to the cellular operators included, projecting a brand personality that attracted the youth and embracing the challenge of building long- term relationships with these customers. / Thesis (M.B.A.)-University of Natal, Pietermaritzburg, 2003.

Thesis (M.A.)--Ohio University, August, 2006. / Title from PDF t.p. Includes bibliographical references.

Thesis (Ph.D.(Electrical Engineering)--University of Pretoria, 2004. / Summaries in Afrikaans and English. Includes bibliographical references.

published_or_final_version / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy