Overview of 60 GHz Radio Technology Overview of 60 GHz Radio Technology

presented before

The Fixed Link Consultative Committee Radiocommunications Agency

presented by

Terabeam Corporation

September 17, 2002

Why 60GHz?Why 60GHz?Why 60GHz?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

Why 60GHz?Why 60GHz?Oxygen AbsorptionOxygen AbsorptionWhy 60GHz?Why 60GHz?

Oxygen AbsorptionOxygen Absorption

Why 60GHz?Why 60GHz?Narrow Beam TransmissionNarrow Beam Transmission

Why 60GHz?Why 60GHz?Narrow Beam TransmissionNarrow Beam Transmission

Areas of potential in-band interference

Why 60 GHz?Dense DeploymentsWhy 60 GHz?

Dense Deployments

Why 60GHz?Why 60GHz?Compact AntennaCompact Antenna SizeSize

Why 60GHz?Why 60GHz?Compact AntennaCompact Antenna SizeSize

Antenna of equal performance

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

Millimeter Wave DefinedMillimeter Wave Defined

Customer network device

11 Optical signal is received from network

MMW is a line-of-sight system that sends data over low-powered radio waves through the air.

4 Optical signal sent back into network via fiber

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

Customer network device

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

CUSTOMER DATA

5 Signals transmitted back using the same equipment (full duplex)

Terabeam Gigalink™ BasicsTerabeam 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 CriteriaGigalink Design CriteriaGigalink Design CriteriaGigalink 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 GigalinkGigalink Model Options

Terabeam GigalinkGigalink Model Options

For short range links For medium range links

• Available in Fast Ethernet, OC-3, and OC-12 Speeds

• Two antenna options for varying link distances

Terabeam GigalinkCost-Effective Outdoor Deployment

Terabeam GigalinkCost-Effective Outdoor Deployment

Flexible mounting options including poles or towers mounts

Gigalink Fast Ethernet/OC-3 Modulation Approach

Gigalink Fast Ethernet/OC-3 Modulation Approach

Modulation/Demodulation A Primary Cost Driver

Modulation/Demodulation A Primary Cost Driver

Projected Cost vs. Modulation

for 100 Mbps/155 Mbps@ 60 GHz

0

1

2

3

4

Modulation TypesR

ela

tiv

e C

ost

s ($

)

• 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

SummaryTerabeam’s Affordable & Highly Reliable Gigalink Systems

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

Supporting SlidesSupporting SlidesSupporting SlidesSupporting Slides

Terabeam Gigalink Ranges by Region

North America

Terabeam Gigalink Ranges by Region

North 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 Region

Europe

based on 10-9 BER

The ranges listed are generalized for a specific rain region and availability. Actual results may vary.

Gigalink 13” Parabolic Antenna Pattern (E-Plane)

Gigalink 13” Parabolic Antenna Pattern (E-Plane)

Gigalink 13” Parabolic Antenna Pattern (H-Plane)

Gigalink 13” Parabolic Antenna Pattern (H-Plane)

Gigalink Family of RadiosGigalink Family of RadiosGigalink Family of RadiosGigalink Family of Radios

Gigamon™ Monitoring Screen

DeploymentDeployment History HistoryDeploymentDeployment History 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-xpedientCase 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

DeploymentDeployment History HistoryDeploymentDeployment History History60 GHz with FSO Backup (Miami Network)

DeploymentDeployment History HistoryDeploymentDeployment History History

OC-12 Production Video Remote Backhaul RadioNational Association of Broadcasters (NAB) Debut

Maximum Link Distance vs. Weather Conditions

Maximum Link Distance vs. Weather Conditions

Attenuation Due to FogAttenuation Due to Fog

Attenuation vs. Rain RateAttenuation vs. Rain Rate