wireless network

2. Speaker
Eng Hasan Shamroukh
https://www.youtube.com/watch?v=AmH2nKNPphM

4. Seminar Agenda
•EMW
•Antennas
•Calculations
•Narrow Band Tx
•Data Rates
•Wireless Lab

5. EMW: Electro-Magnetic Wave
H /Right Hand Rule×K=E

6. Antennas
1- Isotropic (Omni Directional)
Radiation Pattern

7. 2- Parabolic Antenna

8. Parabolic Antenna Radiation Pattern

9. Marconi Equation
L = m λ/2L: Antenna Element Length(Hight)
λ: Wavelength

10. •According to his equation we have Marconi
Antennas
•1- Monopole Antenna (Quarter Wavelength)
L = λ/4 m =1/2
•2- Dipole Antenna (Half Wavelength)
L = λ/2 m =1
•3- Tetra pole Antenna (Full Wavelength)
L = λ m = 2

11. •Monopole
Radiation Pattern

12. •Dipole
Radiation Pattern

13. •Tetra Pole (Turnstile)

14. RF Power Loss

15. EIRP

16. RSS: Rx Signal Strength

17. RSL Example

18. ParametersRSSI: Rx Signal Strength Indicator
SNR: Signal to Noise Ratio
NF: Noise Floor
NF = SNRi/SNRo

19. Narrow Band Tx
•FHSS
•DSSS
•OFDM

20. FHSS:
Frequency Hopping Spread Spectrum

21. DSSS
Direct Sequence Spread Spectrum

22. MPSK
Multi Levels Phase Shift Keying
M=2N (M:#of levels N: #of bits)
BPSK
M=2
N=1 QPSK
M=4
N=2

23. OFDM
Orthogonal Frequency Division Multiplexing

24. 16-QAM

26. TNC/RP-TNC
Threaded Neill-Concelman
Reverse Polarity Threaded Neill-Concelman
TNC(Standard) RP-TNC (CISCO)

27. UNII
Unlicensed National Information Infrastructure
FCC Requirements in the 5-GHz U-NII Bands
dBm = 10 log (Pout/1mW)
FCC: Federal Communications Commission
http://www.fcc.gov

28. ETSI Requirements in the 2.4- and 5-GHz Bands
ETSI: European Telecommunication Standards Institute
http://www.etsi.org

29. IEEE 802.11 Channel Layout in the 2.4-GHz Band

30. 2.4 GHz

31. IEEE 802.11 Channel Layout in the 5-GHz Bands

32. 5 GHz

33. Data Rates
802.11(1G)
802.11b(2G)

34. 802.11g(3G)

35. 802.11a(3G)

36. Comparison a/n/ac
3G
4G
5G
(Primary Lobe)
(Secondary Lobe)

37. 802.11n SISO/MIMO

38. 802.11n Channel Aggregation

39. Spatial Multiplexing

40. 802.11n Beam
Forming

41. 802.11ac Channel Aggregation

42. 802.11ac Modulation

43. 802.11ac W1/W2 properties

44. Wireless Lab
•Access Point (Wireless Switch – PC wireless)
•Wireless Gateway (Wireless Router) can add IP
•Change SSID & WEP/WPA settings for both AP/WGW
•For Router change also Internet & LAN settings
•SSID: Service Set Identity
•WEP: Wired Equivalency Protocol (10 Hexa)
•WPA: WiFi Protected Access (8-63 character)