1. WIRELESS-COMMUNICATION

2. Basics

3. What is WiMAX*
WiMAX Stands for Worldwide Microwave Interoperability Forum.
GLOBAL standard for a wireless broadband access
Designed from the ground up for outdoor, long range, carrier class applications
High throughput, non line of sight propagation, scalability for up to 1000's of users.
Supports both licensed and license-exempt spectrum
Applicable in many markets – from dense urban environments to rural areas

4. - Wi-Fi and WiMAX are complementary
WiMAX v/s WiFi
- Wi-Fi and WiMAX are complementary
WiMax operates similar to WiFi.
WiMax operates at speeds upto 75 Mbps.
Greater distance coverage upto 50 km.
Greater number of users.

5. Global Wireless Standards
MAN
802.16
30 miles /50 km Radius.
IEEE WirelessMAN
LAN
802.11
IEEE WirelessLAN
300 ft Radius
ETSI HIPERMAN following 256 OFDM mode of a
IEEE Bluetooth
PAN
33ft radius

6. Point to Point BACKHAUL Telco Core Network or Private (Fiber) Network
WiMAX Setup.
Non Line of Sight
Point to Multi-point
Point to Point BACKHAUL
802.11
Telco Core Network or Private (Fiber) Network
SMALL BUSINESS
INTERNET
BACKBONE
Enterprise Costumers

7. WiMAX Consumer Last Mile
Non Line of Sight
Point to Multi-point
OUTDOOR
CPE
Point to Point BACKHAUL
802.11
&
INDOOR
CPE
Telco Core Network or Private (Fiber) Network
INTERNET
BACKBONE

8. WiMAX Applications setup
Non Line of Sight
Point to Multi-point
Line of Sight BACKHAUL
802.16
802.16
PC Card
Telco Core Network or Private (Fiber) Network
Laptop Connected
Through
INTERNET
BACKBONE
SEEKS BEST
CONNECTION
2 to 3 Kilometers Away

9. Features: Higher throughput at longer ranges (up to 50 km)
Better bits/second/Hz at longer ranges
Scalable system capacity
Easy addition of channels maximizes cell capacity
Flexible channel bandwidths accommodate allocations for both licensed and unlicensed spectrum
Coverage
Standards-based approach to advanced techniques (mesh, beam-forming, MIMO) to improve non-line-of-sight performance
Quality of Service
Connection oriented MAC supports voice and video
Differentiated service levels: E1/T1 for business; best effort for residential
Cost & Investment Risk
Interoperable equipment lets operators purchase equipment from more than one vendor – WiMAX-Certified

10. IEEE 802.16 Standard 802.16 802.16a 802.16e Spectrum
GHz
< 11 GHz
< 6 GHz
Channel Conditions
Line of Sight Only
Non Line of Sight
Bit Rate
32 – 134 Mbps in 28MHz channel bandwidth
Up to 75 Mbps in 20MHz channel bandwidth
Up to 15 Mbps in 5MHz channel bandwidth
Modulation
QPSK, 16QAM and 64QAM
OFDM 256 sub-carriers
QPSK, 16QAM, 64QAM
Same as a
Channel Bandwidths
20, 25 and 28 MHz
Scalable
1.5 to 20 MHz
Same as a with UL sub-channels
Typical Cell Radius
2-5 km
7 to 10 km
Max range 50 km