mobile communications review (T07).ppt

Mobile Communications(54 periods,3 credits) Review Nov.2010 Instructor: Ms.Liu Notes Open book No copies No PDAs, Cell phones, more devices or other electronics, especially dictionary Exam paper in English exam problem types Fill in the blanks with the correct answers (2 points for each.20 points) True-false questions (1 point for each.10 points) Multiple choice(There is only ONE correct answer per topic) (2 points for each.20 points) Short Answer Questions (5 points for each.20 points） essay questions (10 points for each.30 points） Main ponits Frequency allocation of 2G and 3G modulation scheme of GSM and 3G Duplexing scheme Definition, principle, advantages and disadvantages Applications, such as GSM,3G and Wimax Antennas Definition, Functions Smart antennas Signal propagation Multi-path propagation 2.4.1, 2.4.2,2.4.3.etc Medium Access Control(4 types) Definition, Characteristics principle advantages and disadvantages Applications 3.1.1 3.1.2 Spread Spectrum Definition, principle, advantages and types Spread Spectrum (Principle of DSSS) Applications Calculate the DSSS Cellular systems Shape of cells Characteristics of small cells GSM Architecture, radio interface Frequency allocation Mobile services Modulations Two kinds of channels Mobile management Cell GPRS New elements and their features CDMA Characters (e.g. Cell breathing effects) Section 3.5 Advantages Handover Definition Types Applications in 2G and 3G The structure of GPRS, especially MSC Third Generation Systems WCDMA TD-SCDMA Cdma2000 1x WCDMA Frequency allocation Structure of WCDMA, especially CN and UTRAN Protocol stack of WCDMA Channels, frame Interface Soft handover TD-SCDMA Frequency allocation Structure Channels, frame Key technologies of TD-SCDMA(definition, characteristics, etc.) Baton handover LTE Structure Key features Key technologies Wireless LANS Bluetooth Ad-hoc Bluetooth Frequency allocation Networks(Piconet, scatternet) Bd-address Power classes Hopping Core pro