Mestrado Integrado em Eng. Electrotécnica e Computadores

Transcrição

1 Mestrado Integrado em Eng. Electrotécnica e Computadores Carlos A. Fernandes (Resp.) António Topa 1

2 Interest of wireless propagation; Study program; Relation with other courses from MEEC; Classes and study elements; Assessment method; 2

3 Study of radio wave propagation in real environments Modelling of physical mechanisms Enables to keep the pace with challenging new developments of wireless communications 3

4 Perspectives for radio wave propagation modeling are continuously evolving 4

5 Perspectives for radio wave propagation modeling are continuously evolving Large wavelength; Moderate influence form terrain; Negligible effect from lower atmosphere; Influence from ionosphere. 5

6 Perspectives for radio wave propagation modeling are continuously evolving 6

7 Perspectives for radio wave propagation modeling are continuously evolving Smaller wavelength; Strong influence form terrain and environment; Strong effect from lower atmosphere; 7

8 Perspectives for radio wave propagation modeling are continuously evolving 8

9 Perspectives for radio wave propagation modeling are continuously evolving Smaller wavelength; Proximity effects; Issues related to cellular coverage; Multipath fading. 9

10 Perspectives for radio wave propagation modeling are continuously evolving 10

11 Perspectives for radio wave propagation modeling are continuously evolving Multipath is used to enhance transmission capacity; Scatterer AP antenna 11

12 Perspectives for radio wave propagation modeling are continuously evolving 12

13 Relevant applications of radio waves : Mass applications voice/data GSM, UMTS (3G), MBS (4G); data WiFi, Bluetooth, WiMax, UWB; WiHD broadcast land TV and radio, sat. TV; localization GPS; identification RFID. monitoring body area networks (BANs). 13

14 Relevant applications of radio waves : Specialized applications: Telephone/data microwave links; Communications (w/ planes, satellites, etc.); Detection radar, remote sensing,... Medical applications diagnose, treatment 14

15 CHANGES TO FREE-SPACE PROPAGATION Terrain influence: Ground reflection, scattering; Diffraction by obstacles and attnuation; ti 15

16 CHANGES TO FREE-SPACE PROPAGATION Atmospheric influence: Refraction; Attenuation ti by atmospheric gases; Influence from rain; Variability of propagation conditions; 16

17 EXTENSION TO ESPECIAL APPLICATION Land mobile communications: Effect of mutipath propagation; Shadowing effects; Variability of the scenario. 17

18 Physical mechanisms of radiowave propagation in real environments; Corresponding models for system design; Background to cope in professional life with emerging and future developments in wireless systems. 18

19 Important; t PROE: Complementary courses (not strictly necessary); Antennas Microwaves 19

20 STVR Sistemas de Com Móveis 20

21 Recommended text book. Aspectos de Propagação na Atmosfera João Figanier, i Carlos Fernandes Secção Folhas AEIST, Copy of PPT presentations only figures Additional information given during classes 21

22 Additional bibliography See RP webpage (FENIX) and the text book. 2 solved exams IMPORTANT NOTE: there is no other official edition of solved exercises 22

23 Theory hours/week Detailed explanation of theory and applications. Exceeds the basic study elements. Exercise 1.5 hours/week Partially solved selected exercises. (exercise classes start next week) Assistance 1.5 hours/week 23

24 2 Tests or Exam. Final mark = Average (Test1, Test2) w/ Test1, Test2 > 8.5 or 2nd test coincident with 1st exam Option to improve the final mark on the 2nd exam Final mark = Average (Exam1, Exam2) Tests and exams with limited access to study elements Oral defence if Final mark > 17 24

25 Dates of tests 1 st Test: 9-Nov Nov-2009, 18:30-20:00 2 nd nd Test: 4-Jan-2009, 18:30-20:00 (to be confirmed) Includes subjects delivered until one week before the test date; 25

26 Prof. Carlos A. Cardoso Fernandes (Chair) Ext: 2481 Prof. António Topa it pt Ext: 2479 RP Wepage in FENIX system Annoucements; Marks; Selected study elements; Past exams and tests. 26