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September 17, 2002 Overview of 60 GHz Radio Technology presented before The Fixed Link Consultative Committee Radiocommunications Agency presented by Terabeam Corporation Why 60GHz? FCC Part 15.255 unlicensed spectrum Available Spectrum: 57-64GHz = 7GHz contiguous

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overview of 60 ghz radio technology
September 17, 2002

Overview of 60 GHz Radio Technology

presented before

The Fixed Link Consultative Committee Radiocommunications Agency

presented by

Terabeam Corporation

why 60ghz
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
why 60ghz narrow beam transmission
Why 60GHz?Narrow Beam Transmission

Areas of potential in-band interference

why 60ghz compact antenna size
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

millimeter wave defined
Signal is converted to millimeter wave, modulated and transmitted at ~ 60 GHz


Antenna receives the signal and a radio interprets and converts signal to optical


Optical signal sent back into network via fiber




Signals transmitted back using the same equipment (full duplex)


Optical signal is received from network


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.

terabeam gigalink basics
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
gigalink design criteria
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
terabeam gigalink gigalink model options
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

terabeam gigalink cost effective outdoor deployment
Terabeam GigalinkCost-Effective Outdoor Deployment

Flexible mounting options including poles or towers mounts

modulation demodulation a primary cost driver
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 [email protected] 60 GHz



Relative Costs ($)




Modulation Types

summary terabeam s affordable highly reliable gigalink systems
SummaryTerabeam’s Affordable & Highly Reliable Gigalink Systems

Ultra-High Data Rate Capability

Flexible Deployment


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
terabeam gigalink ranges by region north america
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.

terabeam gigalink ranges by region europe
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.

gigalink family of radios
Gigalink Family of Radios

Gigamon™ Monitoring Screen

deployment history
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
case study terabeam mmw e xpedient
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
deployment history23
Deployment History

60 GHz with FSO Backup (Miami Network)

deployment history24
Deployment History

OC-12 Production Video Remote Backhaul Radio

National Association of Broadcasters (NAB) Debut