Overview of 60 GHz Radio Technology

1
Overview of 60 GHz Radio Technology
September 17, 2002

• presented before
• The Fixed Link Consultative Committee
  Radiocommunications Agency
• presented by
• Terabeam Corporation

2
Why 60GHz?

• FCC Part 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 Antenna Size
Attenna size for a MMW terminal with 44-dBi gain
at a 0.9 beam is ten times smaller than that
required for a 6 GHz microwave antenna with
similar capability
Antenna of equal performance
7
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 (gt155 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_at_ 60 GHz
4
3
Relative Costs ()
2
1
0
Modulation Types
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SummaryTerabeams 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 worlds 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)
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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