PPT On Wimax
Wimax Presentation Transcript:1. What is WiMAX ?
A fourth generation (4G) Wireless Technology WiMAX stands for Worldwide Interoperability for Microwave Access A Broadband Wireless Access (BWA) technique offering fast broadband connections Founded by Ensemble, CrossSpan, Harris & Nokia
2. WiMAX Architecture & Design
Types of WiMAX Fixed WiMAX Mobile WiMAX Wireless Architectural Deployment Point to Point Point to Multipoint
3. Salient Features
OFDM based PHY layer Adaptive Modulation & coding(AMC) Link Layer Retransmissions Support for TDD & FDD IP based architecture
4. Behind WiMAX
OFDM -type of multicarrier modulation -break high bit data rate to parallel low bit DR -reduced computational complexity -graceful degradation of performance WiMAX MAC -provide interface between transport layers and physical layer -support for ARQ
5. User level Features
High peak rates Quality of Service (QoS) Support Robust Security NLOS Capability Support for any sort of residential or business communication Low equipment and subscription costs Power Saving features Wide Area Coverage
6. Technical Challenges
Challenge Potential Solution Interference Adaptive Antennas, Security Encryption, access control Portability Power Efficient Modulation Mobility Seamless Handover Low Cost IP based protocols
7. WiMAX Quadruple Play
Voice Video Data Mobile voice & data VoIP IPTV Fixed Mobile
8. What WiMAX will offer
WiMAX based Mobile VoIP handsets are likely to be priced at around $30 to $50. Reduced tariffs for voice, data, video etc. Reduced maintenance costs.
9. WiMax Technology
WiMAX is expected to provide fixed , nomadic, portable and, eventually, mobile wireless broadband connectivity without the need for direct line-of-sight (LOS) with a base station. In a typical cell radius deployment of three to ten kilometers, WiMAX Forum Certified™ systems can be expected to deliver capacity of up to 40 Mbps per channel, for fixed and portable access applications. Mobile network deployments are expected to provide up to 15 Mbps of capacity within a typical cell radius deployment of up to three kilometers.
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