Böcker av Lin Gao

Today's wireless communications and networking practices are tightly coupled with economic considerations, to the extent that it is almost impossible to make a sound technology choice without understanding the corresponding economic implications. This book aims at providing a foundational introduction on how microeconomics, and pricing theory in particular, can help us to understand and build better wireless networks. The book can be used as lecture notes for a course in the field of network economics, or a reference book for wireless engineers and applied economists to understand how pricing mechanisms influence the fast growing modern wireless industry. This book first covers the basics of wireless communication technologies and microeconomics, before going in-depth about several pricing models and their wireless applications. The pricing models include social optimal pricing, monopoly pricing, price differentiation, oligopoly pricing, and network externalities, supported by introductory discussions of convex optimization and game theory. The wireless applications include wireless video streaming, service provider competitions, cellular usage-based pricing, network partial price differentiation, wireless spectrum leasing, distributed power control, and cellular technology upgrade. More information related to the book (including references, slides, and videos) can be found at ncel.ie.cuhk.edu.hk/content/wireless-network-pricing.

This monograph concentrates on the modeling of the astrodynamic behavior of geostationary orbit (GEO) debris, and apply that in calculating the relative velocity between GEO debris. A general model was firstly developed describing third-body gravity perturbation to debris''orbit. The model is proved by applying it to the precession of the lunar orbit. It''s then used to tell the motion of GEO debris in both short and long term. Without considering the Moon''s precession around the solar pole, the relative velocity between GEO debris can be calculated. A simulation was done and the value of the relative velocity between GEO debris was given. This is an important coefficient for simulating the GEO debris environment and can serve as an input to break up models.