Hi,
Here is the difference between WiFi & Wimax:-
WiFi:
1)-IEEE STANDERED:- 802.11
2)-RANGE:- 300 feet with speed of 54 mbps
3)-Scalibility:- 1-10 with 1 sebscriber each CPE
4)-channel Width:- 20 MHz fixed
5)-bit rate in 24 channel:- 2.7bps can peak 54mbps
6)-primary application:- wireless lan
7)-Dulex:- half
8)-forward error connection:- Convolutional Code
9)-mesh:- Vendor's property
10)-frequency band:- 2.4 GHz & 5 GHz
11)-radio technology:- OFDM 64 channels &Direct Sequence Spread Spectrum
12)-Bandwidth efficiency:- <=2.7 bps/Hz
13)-Modulation:- BPSK, QPSK,16-, 64- QAM
14)-Encryption:- Optional- RC4 AES in 802.11i
15)-http://www.whiznets.com/index.php/wifi-technology.html
Wimax:
1)-IEEE STANDERED:- 802.16
2)-RANGE:- 50 miles with speed of 70 mbps
3)-Scalibility:- 1-100 with unlimited sebscriber each CPE
4)-channel Width:- 1.5 to 10 MHz fixed
5)-bit rate in 24 channel:- 5 bps can peak 75mbps
6)-primary application:- Broadband wireless acess
7)-Dulex:- full
8)-forward error connection:- Convolutional Code Reed Solomon (Viterbi and Turbo decoders)
9)-mesh:- yes
10)-frequency band:- 2 GHz to 11 GHz
11)-radio technology:- OFDM 256 channels
12)-Bandwidth efficiency:- <5 bps/Hz (3.75)
13)-Modulation:- BPSK, QPSK,16-, 64-, 256-QAM
14)-Encryption:- Mandatory- 3DES Optional- AES
15)-http://www.whiznets.com/index.php/wimax-technology.html