Viasat - Innovative Bandwidth Savings Techniques Beyond Modulation - Paul Sandoval

1. ViaSat Proprietary
Innovative Bandwidth Savings Techniques Beyond
Modulation
Rio de Janeiro May 27,2008
Transforming Satellite Broadband Communications
Paul Sandoval
Business Director, Latin America
paul.sandoval@viasat.com
Viasat Inc.

2. ViaSat Proprietary
Company Introduction

3. ViaSat Proprietary
Introduction to ViaSat
Founded in 1986
Long-term record of growth &
profitability
Headquarters in San Diego,
California USA
Major Facilities near Atlanta &
Washington DC
US Monolithics subsidiary in
Chandler, AZ
ECC subsidiary in Ohio
Other offices in:
Boston
Rome
Sydney
Brazil
New Delhi
Beijing
Baltimore/DC
Santiago

4. ViaSat Proprietary
Business Mix
Government Systems
Commercial
Satellite Networks
Antenna
Systems

5. ViaSat Proprietary
Government Sector
Modems
Transportables
Comm-On-the-Move
PortablesUHF

6. ViaSat Proprietary
Commercial Sector
Satellite NetworksAntenna Systems
Subsidiaries

7. ViaSat Proprietary
Broadband Networks

8. ViaSat Proprietary
ViaSat’s Hybrid Network
Convergence!
LinkStarS2, DVBS2-ACM
VSAT Network System
LinkWayS2, Full Mesh
and Hybrid DVBS2
Mesh-Star Networking
ArchLight Modem
Mobile Broadband all
in one Platform
EBEM Optimized SCPC
point to point point to
multipoint Networking
LinkWay s2 EBEM
Medium to High
Capacity
SCPC Solution
DVB-S2 ACM-TDMA
Star Solution
DVB-S2 TDMA
Star/Mesh
Solution
ArcLight
Mobile FSS
Solution
LinkStar s2

9. ViaSat Proprietary
Market mix
Large EnterpriseConsumer Mobile Platforms
SME / SOHO Defense
Broadband, Mobile, IP
Mobile Personal

10. ViaSat Proprietary
SurfBeam DOCSIS
The platform of choice for Internet Access

11. ViaSat Proprietary
Strongest Market Position
in the World
What is the fastest growing VSAT
network in the world?
WildBlue powered by
SurfBeam!
More people are selecting
this network than any other
in the USA
WildBlue network used for many
applications including distance
learning

12. ViaSat Proprietary
WildBlue
Direct to Home Broadband
Low cost satellite broadband
Fastest growing consumer broadband ever
Dish
DirecTV
AT&T
Over 350k terminals delivered to date
Additional contract for 500k terminals signed May
2007

13. ViaSat Proprietary
Big International Success
Successful networks outside of US
demonstrate international product
appeal
Pegaso in Latin America have
demonstrated product appeal to vertical
markets.
Canada’s Telesat has successfully sold into
the retail/consumer space
Intelsat network for Middle East
Eutelsat to emulate WildBlue success
in Europe
Ka-band capacity on Eutelsat’s HB-6 is
being used to support service this year
Additional capacity will be deployed to
meet demand

14. ViaSat Proprietary
How will Viasat-1 will
transform the future of
Satellite Broadband

15. ViaSat Proprietary
Key Satellite Technologies
Ka-band, Spot Beam
Satellites
Higher capacity per
satellite = lower cost per
bit
Adaptive Coding and
Modulation
Robust against link
impairments
Spectral efficiency
DOCSIS – Satellite
Leverages cable investments
to mass market Satellite
broadband

16. ViaSat Proprietary
Anik F2
Shared between WildBlue (US) and Telesat (Canada)
45 User spot beams
6 Gateways
Gateway

17. ViaSat Proprietary
Satellite Broadband Subscribers
follow the population
US
Population
Density
Satelllite
Broadband
Subscriber
Distribution

18. ViaSat Proprietary
Viasat-1

19. ViaSat Proprietary
Extraordinary Capacity:
‘Bits in Space’…

20. ViaSat Proprietary
…while Managing In-orbit
Costs...

21. ViaSat Proprietary
…and Achieving Superior
Capital Efficiency
$M/Gbps$M/Gbps

22. ViaSat Proprietary
The Partners
Lead investor ViaSat-1
Satellite networking technology
Next-Gen SurfBeam ground systems
KA SAT – 13 E orbital slot
Europe’s leading TV neighborhood
Strategic business relationship
European operations using ViaSat next-
gen SurfBeam ground systems
Longtime partner: VSAT, defense,
mobile, Tooway Ka
Satellite builder for ViaSat-1
1st Ka spot beam satellite
One of top two global Ka service providers
Investor in Canadian capacity
Contributes 115 W orbital slot

23. ViaSat Proprietary
Surfbeam-DOCSIS
Platform Architecture

24. ViaSat Proprietary
SurfBeam & DOCSIS
DOCSIS
Standard for consumer Internet Access over cable
worldwide
Designed specifically for lowest cost of operation and
deployment
Mature and proven business model – deployed virtually in
all cable operations worldwide – millions of modems
DOCSIS-Over-Satellite
Virtually 95% identical to the existing systems
Identical chipsets in the user CPE and the hub/headend
Plug and play compatibility with hundreds of infrastructure
products for competitive satellite based service offering
Not an adaptation of a VSAT model to consumer but an
adaptation of a consumer system to satellite

25. ViaSat Proprietary
The SurfBeam System
SM ODU
User PC
IP Switch/
Firewall
Access
Router
SMTS
Network Operations
Center (NOC)
SiSi
Device Provisioning
System
Network Management
System
TCP/HTTP
Acceleration
Internet
Gateway RF
OSS
Subscriber/
Provisioning
Databases
SurfBeam Gateway
SurfBeam
Subscriber
Terminal

26. ViaSat Proprietary
SurfBeam combines ViaSat
and Partner products
Products developed by ViaSat
Satellite Modem Termination System (SMTS)
• Adapted from Motorola Cable head end
Satellite Modem (SM)
• High performance, low cost
Outdoor Equipment (ODUs)
• Antenna and Transceiver
ViaSat Partners
Provisioning Systems
Operational Support and
Back-office Systems
Gateway Management

27. ViaSat Proprietary
Total Business Solution
Business Support System
Operations Support System
Network Management
System
MAC Layer
(Media Access Control)
Physical
LayerDVB-RS
DOCSIS
(1.1)
&
3rd Party
Vendors
Other
Proprietary
SurfBeam

28. ViaSat Proprietary
2003 2004 2005 200620032003 20042004 20052005 20062006
Satellite Modem Evolution
11stst GenerationGeneration
• Ku-band
• Ext. pwr supply
• Dual Rx/Tx IFL
• 10/100 bT Enet
• L2 bridge
22ndnd GenerationGeneration
• New enclosure
• Adds built-in
TCP PEP
33rdrd GenerationGeneration
• Adds Ka-band
support
• Built-in HTTP
accel.
ViaSat Proprietary & Confidential
44thth GenerationGeneration
• New enclosure
• Smaller power
supply
ViaSat Production:
100+/month 1,000+/month 20,000+/month

29. ViaSat Proprietary
Service Flow Scheduling
Service Flow Scheduling Types
Support for multiple upstream schedulers
• DOCSIS-inherited
– Best Effort
– Unsolicited Grant Service
– Real-time Polling Service
– Non-real-time Polling Service
• Satellite-enhanced
– Enhanced Multi-State Scheduler (EMSS)
– Demand Assignment Multiple Access (DAMA)
Most widely deployed
Demand Assignment Multiple Access (DAMA)
• Bandwidth requested in upstream contention regions
• Bandwidth allocated based on near-term demand—taking into
account immediate need combined with traffic patterns
characteristic of the traffic type (e.g., WWW)
Unsolicited Grant Service (UGS)
• Periodic bandwidth allocation
• Bandwidth allocation is either static (i.e., “always on”) or dynamic
(i.e., assigned when traffic is classified into a UGS-defined service
flow
• Typically used for CIR-type services
• In use today for customer deployments that offer VoIP and Video
value-added services

30. ViaSat Proprietary
Linkstar
Platform Architecture

31. ViaSat Proprietary
Blue-chip Linkstar Customers
InterDirec
Miditel
Vitacom
Richgain
CNPC
Datacom
Weida
SSE
Shenzen Sec.
SVA
ISS
Speedcast
SMART
Celcom
Indosat
Scopetel
Transtel
Sentech
Q-Kon
Telespazio Brazil
Comsat International
COC
TBGI
Eutelsat/Skylogic
Intelsat
Telespazio
Indra
Union Fenosa
KB Impuls
Lukoil
Race Comm.
Heliosnet
Classica
Telstra
Newsat
Multimedia
BTL
Linkserve
ABG
ACS
Comsat
International
PDVSA
CANTV
Tata
HCL Comnet
Bharti
ISRO
IO Global
Essel Shyam
U.S. Military
HiCap
NSTT
AIC
Shoppers
Intralot
Mainstream
USFK
Caprock
RAM Telecom
MBS
HITN
MCI
150+ LinkStar Hubs & 100,000+ Terminals Delivered
Commercial, Government & Military Applications
Telikom PNG
Bank S. Pacific
Tuaropaki
Fintel
UNETE
Motorola
Telespazio Argentina
Velconet
Comsat
Tarim Oil
Entel
Globalnet
CNTV

32. ViaSat Proprietary
Two LinkStarS2A Hub Choices
High Capacity MX Series Hub
Up to 8,000 remotes per region
Up to 80,000 remotes per hub
Choice of maximum downstream rates
Lower Cost C-Series Hub
C-250 supports up to 250 sites
C-500 supports up to 500 sites
10 Mbps maximum outbound rate
Field upgradeable to LinkStar MX Hub
Same rich features as LinkStar MX Hub

33. ViaSat Proprietary
DVB-S2 Technology for Highest
Downstream Efficiency
LinkStarS2A with DVB-S2
typically uses 30-40%
less satellite bandwidth
than DVB-S:
LDPC Coding eliminates 8% Reed
Solomon overhead.
1.2 carrier spacing uses 11% less
bandwidth than 1.35
Includes QPSK, 8PSK, &
16APSK waveforms
LinkStarS2 is field proven
in more than 40 networks
worldwide

34. ViaSat Proprietary
LinkStarS2 “DLA” Technology for
Highest Upstream Efficiency
LinkStarS2 “DLA” – Dynamic Link
Adaptation eliminates wasted
satellite capacity for rain margin
Upstream carrier operates at most
bandwidth efficient symbol rate & coding
during clear sky
Rain faded sites automatically undergo
two dimensional rain compensation
1. Automatic change to more robust FEC
(e.g. 6/7 to 2/3)
2. Automatic change to lower symbol
rate
Reduces upstream satellite
bandwidth by up to 18%
Carrier Frequency Spectrum with DLA
-20
-15
-10
-5
0
5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Transponder Frequency (MHz)
Carrier Frequency Spectrum without DLA
-20
-15
-10
-5
0
5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Transponder Frequency (MHz)
16 MHz
Qty 20 x 625 ksps FEC = 2/3 carriers
13.2 MHz
Qty 16 x 625 ksps FEC = 6/7
carriers
+ qty 1 x 312 ksps carrier for fade
mitigation

35. ViaSat Proprietary
Bandwidth Efficient Upstream Access
Schemes Optimize Satellite Bandwidth
Usage
Committed Information Rate (CIR)
Provides guaranteed bandwidth
Bandwidth on Demand (BOD)
Reduces bandwidth usage by allocating
bandwidth only when needed from common
pool
Carrier Load Balancing - Dynamically balances
the load among all inbound carriers based on
traffic activity for efficient bandwidth
utilization
Slotted Aloha
Fast response time for bursty traffic
Efficient for narrowband/transactional traffic
CIR Reallocation
Provides guaranteed bandwidth when needed
Bandwidth available to common (BOD) pool
when not needed
Optimized satellite
bandwidth usage
= reduced OPEX
costs

36. ViaSat Proprietary
Efficient Access Schemes
(con’t)
Multi-channel Traffic Burst
Improves efficiency by dynamically allocating
one big burst instead of multiple small bursts for
large data rate requirement
Multi-frame Traffic Burst
Allocates available bandwidth to larger quantities
of remote terminals
Multi-frame CIR
Ensures guaranteed bandwidth for larger
quantities of remotes for narrowband
applications
Application Triggered BoD
Enables broadband access to the hub without
compromising transactional traffic
Triggers immediate high speed BoD channel
based on customer specified parameters
Application Triggered CIR
Similar scheme as Application Triggered BoD,
but assigns CIR channel
Ideal for voice and videoconferencing
applications

37. ViaSat Proprietary
Quality of Service
Site Level QoS
Prioritizes IP and satellite resources within the
RCST
Mandatory for time sensitive applications like
voice over IP (VoIP) and videoconferencing
Sets priority with Diffserv based 6 classes of
service
Honors priority from other devices via TOS
byte
Network Wide QoS
Prioritizes upstream satellite bandwidth by site
• Ideal for military applications
Prioritizes upstream satellite bandwith by
application
• Ideal for voice services
Three levels of prioritization

38. ViaSat Proprietary
Receive Only LinkStar
Feature Highlights
DVB-S2
CCM, VCM optional
5 to 36Msym/s, other rates optional
Up to 50 Mbps IP Throughput
Unicast or Multicast IP Addressing
Optional AES IP Data Encryption
Easy upgrade to 2-Way operation
Applications
Digital Media Downloads
Digital Cinema
Stock Tickers
LinkStar

39. ViaSat Proprietary
Compression Accelenet

40. ViaSat Proprietary
Why AcceleNet® ?
Best Internet Navigation
Experience
Multiply your Speed in Half the
Bandwidth

41. ViaSat Proprietary
Solving Network
Performance Challenges
Compression
Dramatically reduce bytes uploaded and
downloaded to increase effective bandwidth
available
Round-trip reduction
Reduce the round-trips required to complete
transactions to dramatically improve perceived
application performance
Optimized Transport
Replace TCP with a transport that performs
optimally over problematic links, reduces
retransmissions and increases network utilization

42. ViaSat Proprietary
Benefits of Transport
Optimization With Compression
Without
AcceleNet
With
AcceleNet
ITP
With
AcceleNet
ITP
+
AcceleNet
Compression
*results based on third party testing
50-75%
bandwidth
reduction
Transport Optimization

43. ViaSat Proprietary
Optimized Application Performance
HTTP Servers
Enterprise Email
Servers
AcceleNet improves effective
Bandwidth, network utilization,
and measured performance
• Fewer bytes transferred
• Single Round Trip
• Minimal Retransmissions
• Optimal use of network
Server
Client

44. ViaSat Proprietary
AcceleNet Architecture
T1, DSL, satellite, dial, cellular
Radius authentication
TCP data encryption
No open listening ports
Desktops, laptops,
PDAs, Smartphones

45. ViaSat Proprietary
HTTP Acceleration
Benefits: 90% reduction in number of round
trips
AcceleNet Proprietary HTTP proxy models the
browser cache to avoid downloading cached
objects.
Software solution provides significantly more
object buffering than possible on any modem.
Greater bandwidth savings and faster
performance than any modem- or client-based
solution on the market today.
Uniquely pre-fetches ALL objects in a single
request, including dynamically-generated URLs;
industry’s highest pre-fetch ratios are achieved.

46. ViaSat Proprietary
Data Reduction-Compression
75% average bandwidth savings in both directions
Patented and custom modules compress HTML and other web-specific
objects
Large Browser History with multiplexed connection history sharing
Large history buffers shared across all TCP connections in a session.
Variable image and multimedia compression Further compression and
content filtering of images (.jpg, .gif, .bmp, .png, etc.) and multimedia
files (.swf) providing even greater bandwidth savings.
Dynamic Compression Engine Selection ‘on the fly’ to determine
appropriate compression techniques.
Browser cache verification Guarantees that cache is never stale;
maintains most current content.
AcceleNet replaces TCP with proprietary more efficient ITP
(Intelligent Transport Protocol) protocol; header compression can
save some bandwidth but AcceleNet has completely eliminated this
problem.

47. ViaSat Proprietary
Transport Optimization
Benefits: 8x greater throughput
Bi-directional flow control ITP maximizes link utilization by
measuring the characteristics of the connection and automatically
adjusting the data flow; greatly outperforming basic techniques like
TCP and connection establishment spoofing which provide limited
benefit.
ITP maintains over 95% bandwidth efficiency with packet loss up to
3% while TCP based connections bandwidth efficiency drops to less
than 35%.Packet-based accountingBetter packet-loss handling;
outperforms stream-based techniques.
Multiplexed TCP connections; Uniquely optimizes the link over
multiple TCP connections instead of each TCP connection, providing
much greater performance especially for web browsing, which uses
multiple TCP sessions per site.
Application-aware optimization; Improves bandwidth efficiency with
advanced retransmission decisions based on type of request; e.g.,
HTTP GET request vs. dropped packet in a file transfer.
ACK reduction; Improves bandwidth efficiency; acknowledges 64
packets in a single ACK.

48. ViaSat Proprietary
AcceleNet Bandwidth Reduction
with typical Brazilian web sites
Upstream Bytes Downstream Bytes
Websites
Un-
accelerated
AcceleNet
(Perfect
Quality)
AcceleNet
(Fair
Quality)
Un-
accelerated
AcceleNet
(Perfect
Quality)
AcceleNet
(Fair
Quality)
http://www.uol.com.br 55K 18K 14K 313K 281K 163K
http://www.terra.com.br 82K 19K 20K 415K 295K 158K
http://www.folha.uol.com.br 72K 29K 14K 527K 353K 159K
http://br.yahoo.com 28K 9K 7K 227K 111K 70K
http://www.globo.com 27K 11K 8K 247K 186K 84K
http://www.bradesco.com.br 38K 8K 8K 252K 176K 83K
http://www.bondfaro.com.br 39K 16K 14K 247K 226K 172K
http://www.pop.com.br 24K 9K 8K 191K 165K 59K
http://www.omelete.com.br 65K 18K 16K 491K 287K 202K
Total (bytes) 434K 137K 109K 2,910K 2,080K 1,150K
Compression Ratio 3.2 4.0 1.4 2.5
% bandwidth saved 69% 75% 29% 60%

49. ViaSat Proprietary
Leaders Who Trust AcceleNet
OEMs ISPs
Enterprises
$20B auditing,
accounting and
tax services firm
900+ location
fast food
restaurant

50. ViaSat Proprietary
Scaleable, Field-Hardened
Technology
2 million+ AcceleNet clients via
MSN9
18 months flawless operation
Extensive client logs gathered every day
by MSN
Five 9’s AcceleNet server
availability at MSN
200+ servers

51. ViaSat Proprietary
LinkWay/LinkStar
Hybrid Full Mesh-Star Topologies
LinkWay 2100 LinkWay S2
LinkWayS2
LinkWay originally designed in 1996, is industry
leader in Full Mesh Networks
Both commercial and
military field proven (8th
generation full mesh MF-
TDMA platform)
What’s new? LinkWayS2
adds DVB-S2 receiver –
enables hybrid network

52. ViaSat Proprietary
Hybrid Star and Mesh network
LWS2 LWS2
LWS2
Mesh node with LinkWayS2 modem
Teleport/
Step Site
DVB
(DVB-S2) Star Modulator
LAN
LWS2
MF-TDMA
MF-TDMA
TDM (DVB-S2) outbound carrier
MF-TDMA
MF-TDMA

53. ViaSat Proprietary
Enhanced Bandwidth Efficient Modem
(MD-1366/U and MD-1366A/U)
Standardized Access to the GIG!

54. ViaSat Proprietary
EBEM- Industry’s first and only have it
all modem
Advanced Modulations and Turbo
Codes
BPSK, QPSK, OQPSK, 8-PSK, 16-APSK
Turbo R=1/2, 2/3, 3/4, 7/8, 19/20
64 kbps 155 Mbps, 32 ksps 60
Msps
AES-256 Scramble
Automatic Transmit Power Control
Seamless Antenna Handover
Capability
ACM (Adaptive coding and
modulation)
Interoperability for Various Modems
on Market
1U Packaging

55. ViaSat Proprietary
MD-1366 Performance Advantages
Best-In-Class Power & Bandwidth Efficiency
165B for Best Performance
165A/IESS for Interoperability
Modulation Code Rate
Bits/
sec/Hz
Spec
Eb/No
16-APSK Turbo 19/20 3.17 10.90
16-APSK Turbo 7/8 2.92 8.90
16-APSK Turbo 3/4 2.50 7.75
16-APSK Turbo 2/3 2.22 6.75
8-PSK Turbo 3/4 1.88 6.55
16-APSK Turbo 1/2 1.67 5.00
QPSK Turbo 7/8 1.46 4.70
QPSK Turbo 3/4 1.25 3.90
QPSK Turbo 2/3 1.11 3.20
QPSK Turbo 1/2 0.83 2.30
BPSK Turbo 1/2 0.42 2.15
Modulation Code Rate
Bits/
sec/Hz
Spec
Eb/No
8-PSK TCM 2/3 1.67 10.20
8-PSK TCM 2/3 +RS 1.53 6.10
QPSK R=3/4 + RS 1.15 5.40
QPSK R=1/2 + RS 0.76 4.10
MD-1366 Turbo Coded Modes
Outperform Turbo Product Codes
Conform to new Standard ‘165B
The most optimal mod/code
points: supports any link budget or
satellite
MD-1366 Interoperable Modes
Optimized performance
OM-73, ‘165/165A, Intelsat
BPSK to 8-PSK, R=1/2 to 7/8
Reed-Solomon outer codes
Most Efficient Bits per Hertz
(Sweet Spot 4.5 – 8 Eb/No)

56. ViaSat Proprietary
Maximize Throughput with ACM
Converts Link Margin to Data Rate Margin
Other modems: add link margin to maintain low data rate
MD-1366 w/ ACM: get a higher rate 99% the time
Hitless Adaptation of Modulation and Coding
As link conditions change, with no interruption in data
Maintaining constant symbol rate and power level
MD-1366 ITA Mode @ 9 Msps
-70
-60
-50
-40
-30
-20
-10
0
10
-2.0 -1.0 0.0 1.0 2.0
Frequency (wrt Rsym)
dBc
31.55 Mbps
ITA using
16-APSK 7/8
MD-1366 ITA Mode @ 9 Msps
-70
-60
-50
-40
-30
-20
-10
0
10
-2.0 -1.0 0.0 1.0 2.0
Frequency (wrt Rsym)
dBc
23.98 Mbps
ITA using
16-APSK 2/3
MD-1366 ITA Mode @ 9 Msps
-70
-60
-50
-40
-30
-20
-10
0
10
-2.0 -1.0 0.0 1.0 2.0
Frequency (wrt Rsym)
dBc
13.50 Mbps
ITA using
QPSK 3/4

57. ViaSat Proprietary
PCMA-Paired Carrier Multiple Access
(Bandwidth optimizer)

58. ViaSat Proprietary
Patented ViaSat PCMA technology allows 2
different satellite signals to operate on the same
frequency
Signal cancellation = BW savings
Frequency
f1
f2
W Hz
W Hz
Before
Frequency f1 & f2
W Hz
After
Bandwidth savings can be as much as 50% !!
Applicable to any modulation / FEC technique

59. ViaSat Proprietary
PCMA – How It Works
Overlapping uplink signal is subtracted to get desired
downlink signal
Terminal1
Uplink Terminal2 Uplink
Downlink =
Terminal1 +
Terminal2
- -
Rx Terminal2 Rx Terminal1

60. ViaSat Proprietary
Gateway Downlink View VSAT Downlink View
Gateway transmits Uplink signalGateway transmits Uplink signal
Gateway cancels its received signalGateway cancels its received signal
Subscriber Terminal transmits a return linkSubscriber Terminal transmits a return link
Return link power too low
to interfere with Outbound
Return link above residual
of cancelled Outbound
Uplink
Gateway receives inbound return links fromGateway receives inbound return links from VSATsVSATs
Hub Canceller (Asymmetric PCMA)

61. ViaSat Proprietary
PCMA Product Overview
Compatible with existing modem technology
Modulation: BPSK, QPSK, 8-PSK, 16-APSK, 16-QAM
FEC: Sequential, Viterbi, Reed-Solomon & Turbo product
codes
Interfaces at IF between modem & RF chain
Easy add-on with plug-n-play installation
Operates at hub site and remote end-user locations
Broadband operation
1 MHz to 36 MHz cancellation
Easy “no-brainer” purchase decision
ROI payoff between 2 to 6 months
Product available in 10Mhz, 20Mhz, 36Mhz

62. ViaSat Proprietary
More Product Details
Key attributes
Cancellation BW: 1 MHz to 36 MHz
70 MHz IF (52 to 88 MHz), supports C or Ku-band systems
25 dB min forward carrier signal cancellation
Compact (1 RU 19 inch rack mount)
Front panel and remote control (Ethernet) interface
Redundancy switch configurations (1:1 and 1:8)
Broad product compatibility and Modem Agnostic
Comtech/EF Data
Radyne/ComStream
Paradise
Others
Optimize your Future and legacy links today!

63. ViaSat Proprietary
Operational Considerations
Link requirements
Full-duplex circuits only (symmetric or asymmetric)
Must be able to receive your own uplink signal
(doesn’t work with cross-strap transponders)
Implementation considerations
Power is slightly increased over standard frequency pair approach
(0.15 to 0.5 dB depending on near/far ratio)
May need to change existing coding rates and modulation to take
advantage of bandwidth reduction
• Link budget analysis will determine link configuration and
estimated overall savings of power and bandwidth with PCMA
New services can be designed to maximize savings
(e.g., optimal antenna size)
Products
DAMA – StarWire
• 64 kbps - 2 Mbps SCPC modem integrated into network
Hub Canceller
• Hub-Spoke – ArcLight (Broadband, Gov. programs)
• High-speed trunking Point-to-point

64. ViaSat Proprietary
Asymmetric PCMA in a DVBS/S2/TDMA Network

65. ViaSat Proprietary
Asymmetric PCMA in a TDM/SCPC returns

66. ViaSat Proprietary
Symmetric PCMA in a SCPC Point to Point

67. ViaSat Proprietary
Mobile Broadband

68. ViaSat Proprietary
Ethernet
ArcLight Mobile Broadband System
Ku-Band
Satellite
Return
Channel
Receiver
Subsystem
Hub
Antenna
Forward
Channel
Modulator
Return Link:
32 - 1024 kbps
To Cabin LAN
Internet
Small Mobile
Antenna
Router
Network
Operations
Center
512k – 30 Mbps
Forward Link
Hub
Canceller
Broadband
Ku-band
Satellite
Transceiver

69. ViaSat Proprietary
Large Business Jet Product
ViaSat designed, developed and operates the
SKYLink broadband satellite system
Integrated satellite terminals for aircraft (multiple STCs)
Ground earth stations
Satellite network operator
Antenna Size = 11.5”
Total Weight = 32 lbs
Prime Power < 200 Watts
Equipment and service sold by as “SKYLink”
> 60 Aircraft Flying Today!!

70. ViaSat Proprietary
Similar experience to DSL or cable
modem
10+ Mbps shore-to-ship
384 Kbps ship-to-shore
60 cm diameter antenna
< 60 lbs system weight
On-board connectivity options
WiFi
VoIP
Cellular
Future terminals 18” and 14”
North America, Caribbean and
European coverage today
Antenna
Modem
Cellular
Internet
Voice
NOC / Earth Station
High speed connectivity to yachts and ships at sea
Mini-VSAT Maritime Product
300 Systems on Order!!

71. ViaSat Proprietary
Ship Terminal
Larger 1m antenna for expanded
ocean coverage
Significant market
Cellular
Internet
Voice
Melco Antenna
ViaSat Modem / System

72. ViaSat Proprietary
ViaSat Vehicular Terminal
Two-way broadband for government
and enterprise vehicular applications
10+ Mbps to the vehicle
512 kbps from the vehicle
Low Profile Antenna
VMT-1501 Modem
Roof-rack installation
Vehicle pwr operation
Outage mitigation
features
Web browsing, e-mail,
VPN, file transfer, VoIP

73. ViaSat Proprietary
Train Products
ViaSat providing broadband to
high speed trains in Europe
Part of team with Eutelsat, France
Telecom and Alstom
Successful proof-of-concept demo
conducted late 2006
Five train service trial
starting November 2007
Fifty seven train initial
service starting 2008

74. ViaSat Proprietary
ACSM Waveform Example
Coverage
Footprint
Modem RX
Modem RX
Modem RX
Small
Antenna
Med
Antenna
Large
Antenna
Trash = Frame cannot be decoded - discarded
• The Most Disadvantaged Terminal Can Receive Only
Low Data Rate Frames
• Most Advantaged Terminal Receives All FL Frames
• Forward Link Receiver Filters Packets Addressed To
Each Terminal
F R 1/3 Data F R 1/2 Data F R 3/4 Data F R 1/3 Data
F R 1/3 Data F Trash F Trash F R 1/3 Data
F R 1/3 Data F R 1/2 Data F Trash F R 1/3 Data
F
R
1/3 Data
F
R
1/2 Data
F
R
3/4 Data
F
R
1/3 Data

75. ViaSat Proprietary
One for all Mobile Broadband Application

76. ViaSat Proprietary
Star-Mesh-Hybrid-PtoP…and more

77. ViaSat Proprietary
Muito Obrigado-Muchas Gracias!