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Overview of 60 GHz Radio Technology

Overview of 60 GHz Radio Technology

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Overview of 60 GHz Radio Technology

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  1. September 17, 2002 Overview of 60 GHz Radio Technology presented before The Fixed Link Consultative Committee Radiocommunications Agency presented by Terabeam Corporation

  2. Why 60GHz? • FCCPart 15.255 unlicensed spectrum • Available Spectrum: 57-64GHz = 7GHz contiguous • Less susceptible to fog than FSO • Interference-free due to high oxygen absorption and narrow beam width • Compact size • Ideal for dense deployment, redundant architectures • Low transmit power limits exposure concerns • High security • Latency-free

  3. Why 60GHz?Oxygen Absorption

  4. Why 60GHz?Narrow Beam Transmission Areas of potential in-band interference

  5. Why 60 GHz?Dense Deployments

  6. Why 60GHz?Compact AntennaSize Attenna size for a MMW terminal with 44-dBi gain at a 0.9° beamis ten times smaller than that required for a 6 GHz microwave antenna with similar capability Antenna of equal performance

  7. Signal is converted to millimeter wave, modulated and transmitted at ~ 60 GHz 2 Antenna receives the signal and a radio interprets and converts signal to optical 3 Optical signal sent back into network via fiber 4 1 CUSTOMER DATA Signals transmitted back using the same equipment (full duplex) 5 Optical signal is received from network 1 Millimeter Wave Defined Customer network device Customer network device MMW is a line-of-sight system that sends data over low-powered radio waves through the air.

  8. Terabeam Gigalink™ Basics • Fast Ethernet (100 Mbps), OC-3/STM-1 (155 Mbps), OC-12/STM-4 (622 Mbps) speeds • Point-to-point radio system • Requires unobstructed line-of-sight • Reliable for ranges up to 1.25 km • Faded by heavy rain • Integral patch or 13” parabolic antenna for extended range • Turnkey system, delivered complete • Simple, one man installation • Mature product design • Full duplex operation, zero latency

  9. Gigalink Design Criteria • Physical layer device (no switch or IP on data payload) • Integrated terminal/antenna, no IDU • Direct fiber interface for data payload and SNMP • Direct Digital Modulation (DDM) • No Forward Error Correction (“FEC”) required • No protocol overhead (no bandwidth waste, latency) • Protocol independent • Plug-and-play simplicity through Gigamon™ alignment utility • Fiber input/output for data and SNMP • Accurate link availability based on statistical data pool • Simple design for manufacturability, reliability and low cost

  10. Terabeam GigalinkGigalink Model Options • Available in Fast Ethernet, OC-3, and OC-12 Speeds • Two antenna options for varying link distances For medium range links For short range links

  11. Terabeam GigalinkCost-Effective Outdoor Deployment Flexible mounting options including poles or towers mounts

  12. Gigalink Fast Ethernet/OC-3 Modulation Approach

  13. Modulation/Demodulation A Primary Cost Driver • Historically, cost has been the single biggest reason for the lack of MMW Spectrum utilization for commercial uses • For commercial high data rate (>155 Mbps) MMW radios, modulation/ demodulation is the biggest cost drivers: • Coherent modulations requires phase-locked oscillators and phase matched components • -’s: Very high cost, complexity • +’s: High bandwidth utilization • Non-coherent modulations allow the use of free-running oscillators and phase “stable” (vs. “Matched”) components • -’s: Less efficient bandwidth utilization • +’s: Low complexity, lowest cost Projected Cost vs. Modulation for 100 Mbps/155 Mbps@ 60 GHz 4 3 Relative Costs ($) 2 1 0 Modulation Types

  14. SummaryTerabeam’s Affordable & Highly Reliable Gigalink Systems Ultra-High Data Rate Capability Flexible Deployment Affordable Safe and Secure • Gigabit Ethernet speeds in trial • Up to OC-48 possible in future • High-capacity systems with reliable link ranges • Low probability of interference • Designed for dense deployments • Mature, cost-effective system design • Simple, one-person installation • Protocol independent • Patented Direct Digital Modulation • Low amounts of energy emission • Field-proven product line • Remote management via SNMP data

  15. Supporting Slides

  16. Terabeam Gigalink Ranges by RegionNorth America based on 10-9 BER The ranges listed are generalized for a specific rain region and availability. Actual results may vary.

  17. Terabeam Gigalink Ranges by RegionEurope based on 10-9 BER The ranges listed are generalized for a specific rain region and availability. Actual results may vary.

  18. Gigalink 13” Parabolic Antenna Pattern (E-Plane)

  19. Gigalink 13” Parabolic Antenna Pattern (H-Plane)

  20. Gigalink Family of Radios Gigamon™ Monitoring Screen

  21. Deployment History • 1995 Tokyo OC3 Beta Site, (7) OC3 Links • 1999 EMC Campus (4)OC3 (6) OC12 Links • Oct. 2000 Harmonix obtains FCC part 15 Cert. • 2000 E-xpedient Miami, (20) 100FX Links • 2001 Debut of Wireless Production video link • 2002 FSO Hybrid Links (Cogent, Sprint) • 2002 will deploy world’s first “GigE” RF Link

  22. Case Study: Terabeam MMW & e-xpedient • E-xpedient needed to build metro area network in Miami, FL in a dense configuration and rapid timeframe. • Used Terabeam MMW systems to build the MAN • 2 transport rings • 6 – 60 GHz MMW radio links • 6 – Laser link backups • 2 – 38 GHz radio links

  23. Deployment History 60 GHz with FSO Backup (Miami Network)

  24. Deployment History OC-12 Production Video Remote Backhaul Radio National Association of Broadcasters (NAB) Debut

  25. Maximum Link Distance vs. Weather Conditions

  26. Attenuation Due to Fog

  27. Attenuation vs. Rain Rate