1. Wireless Communication systems WiMAX Technology Paul Borza

2. Wireless communication systems Role and features To assure anytime, anywhere the possibility to communicate with others Offer mobility of peoples that increase the productivity of them All the persons become reachable Bring simplicity in communication Bring autonomy in communication: fix, nomad and mobile access that finally means global mobility Falling the installation costs Become a cultural element in our life Offer high data rates (<75Mbps) Quality of Services (QoS) that assure a optimal scheduling of space, time and frequency Offer an important range: until 50km (LOS)

3. WiMAX communications system and their neighborhood now and in the near future WiMax Deepak Pareek, „The Business of WiMAX“, John Wiley & Sons, Ltd., 2006

4. What brings WiMAX? WiMAX is a wireless communication system expected to deliver broadband access services to residential and enterprise customers in an economical way.  fixed WiMAX is capable of becoming a replacement for DSL or cable or for network backhaul.  WiMAX will transform the world of mobile broadband by enabling the cost- effective deployment of metropolitan area networks based on the IEEE 802.16e standard to support notebook PC and mobile users on move.

5. What is WiMAX? A wireless technology optimized for the delivery of IP centric services over a wide area. A certification that denotes interoperability of equipment built to the IEEE 802.16 or compatible standard. The IEEE 802.16 Working Group develops standards that address two types of usage models:  a fixed usage model (IEEE 802.16-2004) and  a portable usage model (802.16 REV e, ratificated at the end of 2005). A scaleable wireless platform for constructing alternative and complementary broadband networks.

6. Wireless communication systems and their application fields

7. Which are the main advantages of WiMAX technology interoperability; cost of base stations and CPE; shared bandwidth up to 100 Mbps; line-of-sight not required; coverage 3–30 miles, more like cellular; licensed and unlicensed spectrum; many DOCSIS-like features including QoS; milestone to ‘broadband everywhere’. Deepak Pareek, „The Business of WiMAX“, John Wiley & Sons, Ltd., 2006

8. WiMAX key capabilities (1) Centrally coordinated architecture:  high-end security, encryption and service authentication;  no ad-hoc PP client communication is possible;  robust radio interface that works in NLOS conditions;  OFDM PHY supports indoor, self installation by end users. High-speed IP services:  optimized to deliver 110 Mbps (net) services (in 3.5 MHz);  Up to 3550 Mbps (net) with large channels (1420 MHz). Second generation IP QoS:  hierarchical QoS supports real-time and grant-based service delivery A low delay radio interface:  enables latency and jitter sensitive applications (VoIP, Internet Gaming, etc.)

9. WiMAX key capabilities (2) Tolerance to Multipath and Self- Interference Scalable Channel Bandwidth Orthogonal Uplink Multiple Access Support for Spectrally-Efficient TDD Frequency-Selective Scheduling Fractional Frequency Reuse Fine Quality of Service (QoS) Advanced Antenna Technology

10. Physical Layer (OFDM) Orthogonal Frequency Division Multiplexing (OFDM) is a multi- plexing technique that subdivides the bandwidth into multiple frequency sub-carriers as shown in left side OFDM modulation can be realized with efficient Inverse Fast Fourier Transform (IFFT), which enables a large number of sub-carriers (up to 2048) with low complexity. In an OFDM system, resources are available in the time domain by means of OFDM symbols and in the frequency domain by means of sub-carriers. The time and frequency resources can be organized into sub-channels for allocation to individual users. Orthogonal Frequency Division Multiple Access (OFDMA) is a multiple-access/multiplexing scheme that provides multiplexing operation of data streams from multiple users onto the downlink sub-channels and uplink multiple access by means of uplink sub-channels.

11. Spectrum efficiency IEEE 802.16e standards have flexible channel bandwidths between 1.5 and 20 MHz to facilitate transmission over longer ranges and to different types of subscriber platforms.

12. Evolution of WiMAX standards

13. Road map of WiMAX Technology

14. WiMAX regulations

15. WiMAX Architecture

16. Main structures of WiMAX system Cellular backhaul Metropolitan Area Network Enterprise connectivity and SoHoEnterprise connectivity

17. Implementing elements for WiMAX technology  Base stations  CPE  Antennas  Terminals WiMAX SoC

18. Intel 5116 chip Wireless Intel 5116 Intel® PRO/Wireless 5116 CPE system diagram Last news: End of 2006 they will realize the first WiFi & WiMAX chip

19. Fujitsu ( MB87M3400 )WiMAX chip Single chip fully compliant with IEEE 802.16-2004 PHY & MAC Support licensed and license-exempt frequencies from 2 to 11GHz and up to 20MHz bandwidth Dual RISC processors for implementing upper and lower layer MAC Uplink sub-channelization Flexible baseband interface with integrated high- performance ADC & DAC Dynamic Frequency Selection (DFS) with integrated DAC DES & AES encryption/decryption for 802.16 MAC privacy sub-layer Subscriber Station Reference Board =>

20. Applications of WiMAX Technology  Wireless voice over IP (VoIP)  Virtual private LAN Services (VPLS)  Video on Demand (VoD)  Vehicular Data and Voice  On line Gaming  Security and Surveillance Systems  Multimedia Communications  Sensor Networks  Telematics and Telemetry  Remote monitoring patients  Mobile transmissions of maps  Wireless transmissions of images

21. Bibliography 1.Deepak Pareek, „The Business of WiMAX“, John Wiley & Sons, Ltd., 2006 2.***, Mobile WiMAX – Part I & Part II:A Comparative Analysis,Wimax Forum, 2006 3.*** Wikipedia, Orthogonal Frequency – division multiplexing, accessed May 2006 on: http://en.wikipedia.org/wiki/COFDM#Comparison_to_FDM http://en.wikipedia.org/wiki/COFDM#Comparison_to_FDM 4.*** Intel Corporation, Intel 5116 chip, accessed June 2006, on: http://www.intel.com/netcomms/technologies/wimax/wimax_docs.htm 5.*** Fujitsu Corp, MB87M3400 Fujitsu WiMAX 802.16-2004 SoC for Next- generation Broadband Wireless Access accessed June 2006 on: http://www.fujitsu.com/downloads/MICRO/fma/pdf/MB87M3400_ 0605.pdf