CELLULAR COMMUNICATIONS WiMax. What is WiMax? Fixed WiMax.

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Presentation transcript:

CELLULAR COMMUNICATIONS WiMax

What is WiMax?

Fixed WiMax

Mobile WiMax

WiMax is Not WiFi

WiMax Indoor CPE

P2P and PMP

LOS and NLOS

Antennas and Radios

Adaptive Antenna Systems

QoS

Fixed Wireless Applications

Alternatives

Low Barrier To Entry

16 Wireless Standards  4 main usage segments are specified  Range, Power, …

NDSLab 17 WiMAX on the Path of Fixed/Mobile Convergence Fixed Mobile Will Convergence Wi-FiWCDMA (WiMAX) Spectrum 2.4G, 5.8GHz (Unlicensed) Around 2GHz (Licensed) 2~11, 10~66 GHz (Licensed, Unlicensed) Channel AccessContention-basedScheduled Bit RateUp to 54MbpsUp to 2MbpsUp to 75 Mbps MobilityFixed, PortableMobileFixed, Portable, Mobile Modulation Scheme CDMA, OFDMCDMAOFDM, OFDMA Typical Communication Range 100s meters10s kilo-meters

Comparison

19 Deployment of WiMAX Service Source: WiMAX Forum/Siemens  Backhaul Feeding  Point-to-point link for fixed infrastructure  Fixed Wireless Access  Wireless local loop for hot-spot feeding  Nomadic Access  CPEs in hot-zone access the service directly  Portable/Mobile Access  Handover function enabling mobile data feeding

Mobile Performance Today m leads in performance e leads in performance and availability TechnologyRequired Spectrum Standards Completion (Expected) Peak Throughput (Mbps) Avg. Spectral Efficiency (bits/sec/Hz/Sector) Sleep to Active Latency DLULDLUL e/Mobile WiMAX Release 1.0 2x2 MIMO TDD 10 MHz (5:3) Dec < 40 ms HSPA (Release 6) FDD 2x5 MHzMar ms HSPA+ (Release 8) 2x2 MIMO FDD 2x5 MHzDec ms LTE (Release 8) 2x2 MIMO FDD 2x10 MHzMar ms LTE (Release 10) 4x4 MIMO FDD 2x10 MHz(Q1 2011) <10ms m 4x4 MIMO TDD 20 MHz (5:3) (Q3, 2010) <10 ms