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Comtech sspi vsat_day_2010

The document discusses innovative solutions for optimizing throughput in hub-spoke satellite networks. It describes four pillars for optimizing throughput: coding gain using advanced FEC like DVB-S2 and VersaFEC, carrier-in-carrier technology to compress bandwidth, adaptive coding and modulation to maximize throughput under changing link conditions, and WAN optimization techniques like header compression and payload compression. The combination of these techniques in a new product called the Advanced VSAT Series can significantly reduce network capital and operating expenses through more efficient use of satellite bandwidth and network resources.

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Innovative Solutions for Hub-Spoke Networks November 2010 © Copyright 2010 Comtech EF Data Corporation Johnny Marmolejos
Cellular Market - Astounding Subscriber Growth • There were ~ 57 million fewer fixed telephone lines at the end of 2009 than there were at the end of 2006 • There were 1.9 billion net additional mobile cellular subscriptions between 2006 - 2009 – Over 1.6 billion of these were in the developing world • In many developing countries 50%+ of rural households now have a mobile phone 2
Traffic Growth is Faster Than…. 3Source: Unstrung Insider
Cost-Efficient Transport 4
Typical Hub-Spoke Network Topology VersaFEC Return VersaFEC Return VersaFEC Return Remote Terminals DVB-S2 Outbound SATCOM Coverage Hub 5Comtech EF Data Proprietary Medium & Low Data Rate/ Remote
How we can do better? • Satellite Services Providers and Integrators want to increase revenue and expand their businesses via the implementation of new technologies • Typical challenges – Achieve higher network efficiency – Optimize limited resources available – Reduce costs (OPEX & CAPEX) when possible • Explore new ways to maximize the utilization of key resources: space segment and hardware 6 Comtech EF Data Proprietary
Reducing Total Cost of Ownership (TCO) • CAPEX for a network includes – Hub Cost  Antenna  RF  Indoor equipment – Remote Cost  Antenna  BUC/SSPA  Indoor unit  Solar Panels, Batteries etc (for Solar Powered sites) • OPEX includes – Space Segment = Leased bandwidth – Annual Maintenance Fees 7Comtech EF Data Proprietary Operating Expenses Capital Expenses Network Operations + Depreciation Total Cost of Ownership Operations & Maintenance Transmission OPEX Power Spares/Support Training Site Rental Network Equipment Site Equipment Civil Works NRO Transmission Equipment
Four Pillars of Optimizing Throughput 8 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
9 Modem Power & Bandwidth Savings • Turbo Product Coding – Lower Eb/No requires less power – Higher efficiency uses less bandwidth 4.0 1.50 3/4 5.2 1.35 Viterbi + Reed Solomon Turbo Product Coding Eb/No (dB) Bandwidth Efficiency (bps/ Hz) 4.2 1.75 7/8 6.5 1.58 Viterbi + Reed Solomon Turbo Product Coding Turbo Less BW Turbo: Less Power
DVB-S2 Advantage • Best available FEC – Excellent coding gain  Minimize leased bandwidth  Maximize throughput  Permits smaller antenna • Widest range of modulation and code rates – 28 combinations allow for optimal link design for any operating condition  QPSK, 8PSK, 16APSK and 32APSK • Supports Adaptive Coding & Modulation (ACM) and Variable Coding & Modulation (VCM) • Selectable roll-off – 20%, 25% and 35% support efficient transponder utilization 10Comtech EF Data Proprietary
At same C/N DVB-S2 will be 30% more efficient than DVB-S DVB-S Efficiency Curves DVB-S2 Efficiency Curves 11Comtech EF Data Confidential
Coding / FEC (Forward Error Correction) • Does not change your Signal to Noise ratio • Does nothing to improve your signal quality • FEC’s simply correct errors lost in transmission • But not all FEC’s are created equally! 12
Coding / FEC (Forward Error Correction) • Shannon-Hartley Bound: There is a maximum bound on the amount of error free data that can be transmitted though a noisy transmission medium 13 Coding Type Vs. Shannon Bound Sequential or Viterbi + 4-8 dB Turbo Product Codes + 2-3 dB Versa FEC + 1-2 dB DVB-S2 LDPC+BCH + 0.7 – 1.5 dB
Advances in Coding Gain 14 Viterbi 1/2 Viterbi 3/4 Turbo 1/2 Turbo 3/4 Versa FEC .533 VersaFEC .706 DVB-S2 1/2 DVB-S2 3/4 Viterbi 7/8 Turbo 7/8 DVB-S2 8/9 0 0.5 1 1.5 2 2.5 0 1 2 3 4 5 6 7 8 9 10 SpectralEff. Eb/No Coding Comparison Shannon Limit QPSK
Advances in Coding Gain on: Fixed BW Maximize Throughput 15 Viterbi + RS TPC Coding Versa FEC DVB-S2 Fixed C/N 6.0 dB 6.0 dB 6.0 dB 6.0 dB Best Modulation / Coding for Es/No QPSK ½ QPSK ¾ QPSK .803 QPSK 5/6 (.827) Spectral Efficiency 0.92 bits / Hz 1.5 bits / Hz 1.61 bits / Hz 1.65 bits / Hz BW = SR 5.0 MHz 5.0 MHz 5.0 MHz 5.0 MHz User Data Rate 4.6 Mbps 7.5 Mbps 8.1 Mbps 8.3 Mbps
VersaFEC™ • VersaFEC is a patented (covered by U.S. patents 7,353,444 and 7,415,659. Other patents pending.) system of short-block, low latency Low Density • Parity Check (LDPC) codes designed to support latency-sensitive applications, such as cellular backhaul over satellite • Supports Adaptive Coding & Modulation (ACM) • VersaFEC was developed by Comtech AHA in collaboration with Comtech EF Data VersaFEC is a Trademark of Comtech AHA 16Comtech EF Data Proprietary
VersaFEC Modulation & Code Rates • VersaFEC supports 12 different modulation and code rates for ACM and CCM Modulation Code Rate Spectral efficiency (bps/Hz) Block Size (bits) Eb/No (typical) Es/No (Typical) 64 kbps 128 kbps 256 kbps 512 kbps BPSK 0.488 0.49 2k 2.4 dB -0.7 dB 26.0 13.0 6.5 3.3 QPSK 0.533 1.07 4.1k 2.2 dB 2.5 dB 53.0 26.5 13.3 6.6 QPSK 0.631 1.26 4.1k 2.7 dB 3.7 dB 59.0 29.5 14.8 7.4 QPSK 0.706 1.41 4.1k 3.4 dB 4.9 dB 62.0 31.0 15.5 7.8 QPSK 0.803 1.61 4.1k 3.8 dB 5.9 dB 66.0 33.0 16.5 8.3 8-QAM 0.642 1.93 6.1k 4.6 dB 7.5 dB 89.0 44.5 22.3 11.1 8-QAM 0.711 2.13 6.1k 5.2 dB 8.5 dB 93.0 46.5 23.3 11.6 8-QAM 0.780 2.34 6.1k 5.6 dB 9.3 dB 97.0 48.5 24.3 12.1 16-QAM 0.731 2.93 8.2k 6.3 dB 11.0 dB 125.0 62.5 31.3 15.6 16-QAM 0.780 3.12 8.2k 7.0 dB 11.9 dB 129.0 64.5 32.3 16.1 16-QAM 0.829 3.32 8.2k 7.5 dB 12.7 dB 131.0 65.5 32.8 16.4 16-QAM 0.853 3.41 8.2k 8.0 dB 13.3 dB 132.0 66.0 33.0 16.5 End-to-End Latency (ms) Performance (BER = 5.0E-8) 17Comtech EF Data Proprietary
1 10 100 1000 10000 64 128 256 512 1024 2048 Latency(ms) Data Rate (kbps) VersaFEC DVB-S2 Short Block DVB-S2 Normal Block VersaFEC Latency vs. DVB-S2 8-PSK 3/4 (DVB-S2) 8-QAM 0.78 (VersaFEC) 18Comtech EF Data Proprietary 95% lower latency compared to DVB-S2 short block while maintaining coding efficiency 256 kbps Return VersaFEC ~ 23 ms DVB-S2 (Short) ~ 400 ms DVB-S2 (Normal) ~ 800 ms
Four Pillars of Optimizing Throughput 19 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
DoubleTalk® Carrier-in-Carrier® • Based on patented “Adaptive Cancellation”, Carrier- in-Carrier (CnC) allows carriers in a Duplex satellite link to occupy the same transponder space 20 Without DoubleTalk Carrier-in-Carrier With DoubleTalk Carrier-in-Carrier Carrier-in-Carrier is a Registered Trademark of Comtech EF Data DoubleTalk is a Registered Trademark of Applied Signal Technology, Inc.
Carrier-in-Carrier Bandwidth Compression • “Carrier canceller” can be used at Hub side for Carrier-in-Carrier bandwidth compression • Carrier cancellation is NOT required at the Remote 21Comtech EF Data Proprietary Without Carrier-in-Carrier With Carrier-in-Carrier
Four Pillars of Optimizing Throughput 22 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
What is ACM ? • Adaptive Coding and Modulation (ACM) is a technique that allows for automatic change in Modulation and FEC Code Rate in response to changing link conditions • Symbol Rate and Transmit Power are fixed and the data rate changes as the modulation and code rate are changed – ACM carriers use fixed bandwidth and power on the transponder • Optimizes channel coding and modulation on a frame-by- frame basis – Allows each remote to operate optimally subject to antenna size, location within the footprint, rain fade and other impairments 23
What is ACM ? (cont’d) • A packet based terrestrial interface (e.g. IP/ Ethernet) that can adapt to data rate changes is required for ACM operation • ACM can maximize throughput under all conditions – Rain fade – Inclined orbit satellite operation – Antenna pointing error – System Noise – Interference – Other impairments 24 Available Capacity Without ACM (Fixed Margin) 5 Mbps 4 Mbps 3 Mbps 2 Mbps 1 Mbps 0 Mbps User Traffic 1:00 Time 1:15 1:30 1:45 2:00 2:15 2:30 2:45 3:00 3:15 Additional Capacity From ACM
Four Pillars of Optimizing Throughput 25 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
Enhanced Generic Stream Encapsulation Key Advantages • Low Overhead Encapsulation – Enhanced GSE for the shared outbound  70-80% more efficient compared to MPE (used by DVB-RCS)  20-30% more efficient compared to GSE 26Comtech EF Data Proprietary
0% 5% 10% 15% 20% 25% 30% 64 128 192 256 320 384 448 512 EncapsulationOverhead IP Datagram Size (bytes) MPE GSE CEFD EGSE Enhanced GSE Key Advantages • Low overhead encapsulation for Outbound Voice traffic 27Comtech EF Data Proprietary Comtech’s Enhanced GSE 70-80% more efficient than MPE 20-30% more efficient than GSE
Streamline Encapsulation Key Advantages • Low Overhead Encapsulation – Ultra low overhead Streamline Encapsulation (SLE) for the return  Patent pending (CEFD)  Reduces encapsulation overhead by – as much as 65% compared to HDLC – as much as 95% compared to AAL5 used in DVB-RCS – as much as 90% compared to proprietary framing used by other VSATs 28Comtech EF Data Proprietary
Comtech Proprietary & Confidential 29 IP Header Compression • Reduces the Layer 2, 3, 4 header to a few bytes • Reduce IP (VoIP) bandwidth by 60 - 65% – G.729 (8Kbps) voice codec compressed from 24 - 32 Kbps to 8/5 (12 Kbps including O/H). • It can reduce 40 byte IP/UDP/RTP header to as little as 1 byte. • For TCP/IP, 40 byte is reduced to as little as 3 bytes. • Configurable on a per route basis • Reduce Web/HTTP traffic by 10%
30 Payload Compression • Can reduce payload size by 40 – 50 % • Configurable on a per route basis • Example of savings IP 20 Bytes UDP 8 Bytes RTP 12 Bytes CH 2-4 bytes Payload (Variable Size) Payload (Variable Size) Compression Traffic Without Payload Compression With Payload Compression File Transfer, Web, etc. 2 Mbps 2Mbps * 60% = 1.2 Mbps Savings = 800 kbps 2 Mbps 2 Mbps 1.2 Mbps
K4 GZIP “Payload Compression” • K4 GZIP is lossless compression: Bits In = Bits Out • GZIP searches for matches current data against previous data • Decompressor has identical history buffer is able to exactly reconstruct the original sequence • K4 GZIP compression will work with any data interface, CCM, ACM, CnC or any combination • Benefit will vary with data type: web pages, text, documents, email vs. compressed voice and video (various packet sizes) • Pattern recognition: 20 bytes of data is represented by 12 bytes => 40% Savings 31
Recap on Key Advantages: 1L, 2L & 3L Optimization • Designed to provide the most efficient: – Physical layer without compromising latency  Industry leading DVB-S2 and VersaFEC low-latency LDPC FEC  ACM (bi-directional) and VCM  CinC technology – Link layer  Low overhead Enhanced GSE and Ultra-low overhead Streamline Encapsulation – IP & higher layer transport  2nd generation hardware-based lossless payload compression  Header compression  Embedded RAN Optimization option for remote terminals Comtech EF Data Proprietary 32
What’s new? • The new optimization approach previously described can be found in our new product: “Advanced VSAT Series” • The following is a brief description of key features and characteristics of the “CDM-800s Product Line” 33Comtech EF Data Proprietary
Comtech and Memotec combined 34 L1Power and bandwidth optimization (superior modulation/FEC and CinC) Technology Benefit Lower OPEX (less bandwidth) Lower CAPEX (smaller dish, less RF) L2 Framing of traffic (Ultra low overhead GSE, Streamline Packet. etc), SLE (vice HDLC) Lowest percentage of user traffic is lost to overhead. ( less bits = less OPEX) E1/E2/E3 Supporting single or multiple E1 with clock extension Customer interface transparency (enabling services)HC PC IPIP support with Header and Payload compression Reduces customer traffic to bear minimum (perfect for VoIP and Html traffic) RAN Optimization Optimizes cellular traffic via traffic redundancy elimination and compression Reduces amount of traffic needed to support cellular traffic by 50% Building value - one layer at a time. Comtech EF Data Confidential IP Opt IP upper layer optimization (acceleration and caching Reduces bandwidth and speeds up user experience when transporting IP over VSAT.
The Advanced VSAT Series CDM-800 Gateway Router CDM-840 Remote Router CDD-880 Multi-Receiver Router CXU-810 RAN Optimizer 35Comtech EF Data Proprietary
Specifications Outbound (HUB- to-Remote) Return (Remote-to-HUB) Data Rate: 1 - 167 Mbps 16 kbps - 15.35 Mbps (CCM) Symbol Rate: 1 - 62 Msps (QPSK, 8PSK) 1 - 47 Msps (16APSK) 1 - 37 Msps (32APSK) 16 ksps - 4.1 Msps (ACM) 16 ksps - 4.5 Msps (CCM) FEC: DVB-S2 VersaFEC Modulation and Coding Rates: QPSK: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10 16APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 32APSK: 3/4, 4/5, 5/6, 8/9, 9/10 BPSK 0.488 QPSK 0.533, 0.631, 0/706, 0.803 8QAM 0.642, 0.711, 0.780 16QAM 0.731, 0.780, 0.829, 0.853 Rolloff: 20%, 25% and 35% 20%, 25% and 35% Encapsulation: Enhanced GSE Streamline Encapsulation (SLE) 36
Supported Protocols RFC 768 – UDP RFC 959 – FTP RFC 2597 – AF PHB RFC 791 –IP RFC 1112 – IP Multicast RFC 2598 – Expedite Forwarding RFC 792 – ICMP RFC 1213 – SNMP MIB II RFC 2616 – HTTP RFC 793 – TCP RFC 1812 – IPv4 Routers RFC 3412 – SNMP RFC 826 – ARP RFC 2045 – MIME RFC 3416 – SNMPv2 RFC 856 – Telenet RFC 2474 – Diffserv RFC 3418 – SNMP MIB RFC 862 – Ping RFC 2475 – Diffserv RFC 894 – IP RFC 2578 – SMI 37
Key Advantages: Flexible & Scalable • Minimal hardware options – CDM-800  Payload compression card  AC or DC Power Supply – CDD-880  Demodulator cards  AC or DC power supply – CDM-840  BUC power supply  AC or DC power supply – ACM/VCM Controller  For larger networks and higher data rates • FAST Upgrade – DVB-S2 from 15 Mbps to 168 Mbps – VersaFEC from 256 kbps to 15.35 Mbps – Header & payload compression options – QoS options (DiffServ) – ACM/VCM Comtech EF Data Proprietary 38 • Highly scalable and flexible platform that can grow with the network
Advanced VSAT Series Key Advantages • Advanced Forward Error Correction (FEC) for maximum bandwidth efficiency – DVB-S2 for the shared outbound – VersaFEC® short-block low latency LDPC for the return channels • Adaptive Coding & Modulation (ACM) – Available for outbound and return – Maximizes network efficiency and availability • Variable Coding & Modulation (VCM) – Allows different levels of protection and quality of service for different applications and user groups 39Comtech EF Data Proprietary
Advanced VSAT Series Key Advantages • Superior availability and service quality – Improved availability  Advanced FEC with ACM/VCM provide additional throughput and margin to cope with fade and other impairments – Lowest Latency  VersaFEC provides lowest latency for return links while providing excellent coding gain – Lowest Jitter  Significantly better jitter performance without the need for excessive buffering, and segmentation and reassembly 40Comtech EF Data Proprietary
Quality of Service (Q0S) • The Advanced VSAT Series supports multi-level QoS to ensure the highest quality service with minimal jitter and latency for real-time traffic, priority treatment of mission critical applications and maximum bandwidth efficiency. • Supported modes are: – DiffServ – Industry-standard method of providing QoS enabling seamless co-existence in networks that implement DiffServ – Max/Priority – Provides multi-level traffic prioritization with the ability to limit maximum traffic per priority class – Min/Max – Provides a Committed Information Rate (CIR) to each user defined class of traffic with the ability to allow a higher burstable rate depending on availability 41
Typical 2G / 3G Network – E1 & IP 42 32 E1 32 E1 BSC RNC CXU-810 RAN Optimizer Internet/ Intranet CDM-840 Remote Router E1 GE BTS Node-B GigE CDD-880 Multi-Receiver Router - CDM-800 Gateway Router Comtech RF Up to 168 Mbps Shared Outbound CDM-840 Remote Router E1 GE BTS Node-B CDM-840 Remote Router E1 GE BTS Node-B Comtech EF Data Proprietary NMS
Typical 2G / 3G Network – All IP 43 CDD-880 Multi-Receiver Router - CDM-800 Gateway Router BSC RNC Comtech RF CDM-840 Remote Router BTS Node-B GE Up to 168 Mbps Shared Outbound Internet/ Intranet CDM-840 Remote Router BTS Node-B GE CDM-840 Remote Router BTS Node-B GE Comtech EF Data Proprietary GigE NMS
Typical Data Network 44Comtech EF Data Proprietary GigabitEthernet DVB-S2 O utbound VersaFEC Return CDD-880 Multi-Receiver Router CDM-800 Gateway Router GigE CDM-840 Remote Router GigE CDM-840 Remote Router GigE CDM-840 Remote Router Internet/ Intranet WAN Optimization/ Application Acceleration NMS
Solar Powered Outdoor Base Station 45 < 50 Watts Low Power BUC ODM-840 Micro Outdoor BTS Comtech EF Data Proprietary
Companion Products • Network Management System • ACM/VCM Controller • CLO-10 for Hub side BW Cancellation (Carrier-in-Carrier) • Memotec’s CX-U Series for 2G/3G RAN Optimization • Stampede’s FX Series WAN Optimization and Application Acceleration Comtech EF Data Proprietary 46
The Advanced VSAT Series • Builds on Comtech EF Data’s legacy of providing the most efficient SATCOM solutions • Provides a superior alternative to those requiring high performance, high quality services in a Hub-Spoke environment – Cellular backhaul with RAN Optimization – Corporate networks – Internet access (ISP) – Maritime & Offshore communications – Govt. & Defense communications – Universal Service Obligation (USO) networks 47Comtech EF Data Proprietary
Advanced SATCOM Solutions • Comtech EF Data is the leading provider of Advanced SATCOM Solutions Oil & Gas High Speed Communications Maritime Cellular Backhaul Disaster Recovery / Emergency Services Government & Defense Communications 48Comtech EF Data Proprietary
Management • Devices can be managed using – SNMP – Web browser • Network Management System – Powered by COMPASS Comtech EF Data Proprietary 49
CDM-800 Web Interface 50Comtech EF Data Proprietary
Advanced VSAT NMS • Based on industry leading Newpoint Compass Monitor and Control System • Licensed by number of devices to be supported from a server • Every system includes full Compass software • 5 concurrent TrueNorth user interface licenses • SNMP Manager • 2 Year Warranty 51Comtech EF Data Proprietary
Technology Leadership • Comtech EF Data has a long tradition of being a technology and market leader in the SATCOM industry – First to offer Turbo Product Codes (TPC) – First to offer Low Density parity Check Codes (LDPC) – First to offer 8-QAM Modulation – First to offer 64-QAM Modulation – First to offer DoubleTalk Carrier-in-Carrier – First to offer VersaFEC short-block low latency LDPC – First to offer Payload compression in a satellite modem – First to offer Header compression in a satellite modem – First to offer ultra low overhead Streamline Encapsulation (SLE) 52Comtech EF Data Proprietary
Optimized Backhaul Solutions Allow for Cost-Effective Satellite Extension to the Microwave Infrastructure 53 BW Comparative backhaul advantage + 6 E1 6 E1 Microwave 5 E1 4 E1 3 E1 2 E1 Satellite 1 E1 1/2 E1 50 100 300 500 +500distance (km) Relative Bandwidth (%) – for same data rate -110-100-90-80-70-60-50-40-30-20-100102030405060708090100110 16QAM 7/8 16QAM 3/4 8PSK 5/6 8PSK 2/3 QPSK 7/8 QPSK 3/4 QPSK 1/2 QPSK 1/2 = 100% Without DoubleTalk Carrier-in-Carrier With DoubleTalk Carrier-in-Carrier
CEFD Product Positioning (Cellular Backhaul) 54 1 TRX 3 TRX 6TRX 1E1 4E1 E2 E3 Sites 01020100+ Capacity Advanced VSAT (Point-to-Multipoint) CDM-570 with RAN Module (Point-to-Point) CDM-625 CnC + CX-U (Point-to-Point) CDM-750 CnC (Point-to-Point)
Questions / Comments ? Thank You! 55Comtech EF Data Proprietary
Comtech EF Data 2114 West 7th Street Tempe, AZ 85281 USA Tel +1.480.333.2200 FAX +1.480.333.2540 sales@comtechefdata.com www.comtechefdata.com CEFD Latin America Lewis Cunnigham Sr. Sales Director Marcos Jannuzzi Johnny Marmolejos Sales Director / Brazil Sr. Sales Engineer

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Comtech sspi vsat_day_2010

  • 1.
    Innovative Solutions for Hub-SpokeNetworks November 2010 © Copyright 2010 Comtech EF Data Corporation Johnny Marmolejos
  • 2.
    Cellular Market -Astounding Subscriber Growth • There were ~ 57 million fewer fixed telephone lines at the end of 2009 than there were at the end of 2006 • There were 1.9 billion net additional mobile cellular subscriptions between 2006 - 2009 – Over 1.6 billion of these were in the developing world • In many developing countries 50%+ of rural households now have a mobile phone 2
  • 3.
    Traffic Growth isFaster Than…. 3Source: Unstrung Insider
  • 4.
  • 5.
    Typical Hub-Spoke NetworkTopology VersaFEC Return VersaFEC Return VersaFEC Return Remote Terminals DVB-S2 Outbound SATCOM Coverage Hub 5Comtech EF Data Proprietary Medium & Low Data Rate/ Remote
  • 6.
    How we cando better? • Satellite Services Providers and Integrators want to increase revenue and expand their businesses via the implementation of new technologies • Typical challenges – Achieve higher network efficiency – Optimize limited resources available – Reduce costs (OPEX & CAPEX) when possible • Explore new ways to maximize the utilization of key resources: space segment and hardware 6 Comtech EF Data Proprietary
  • 7.
    Reducing Total Costof Ownership (TCO) • CAPEX for a network includes – Hub Cost  Antenna  RF  Indoor equipment – Remote Cost  Antenna  BUC/SSPA  Indoor unit  Solar Panels, Batteries etc (for Solar Powered sites) • OPEX includes – Space Segment = Leased bandwidth – Annual Maintenance Fees 7Comtech EF Data Proprietary Operating Expenses Capital Expenses Network Operations + Depreciation Total Cost of Ownership Operations & Maintenance Transmission OPEX Power Spares/Support Training Site Rental Network Equipment Site Equipment Civil Works NRO Transmission Equipment
  • 8.
    Four Pillars ofOptimizing Throughput 8 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
  • 9.
    9 Modem Power &Bandwidth Savings • Turbo Product Coding – Lower Eb/No requires less power – Higher efficiency uses less bandwidth 4.0 1.50 3/4 5.2 1.35 Viterbi + Reed Solomon Turbo Product Coding Eb/No (dB) Bandwidth Efficiency (bps/ Hz) 4.2 1.75 7/8 6.5 1.58 Viterbi + Reed Solomon Turbo Product Coding Turbo Less BW Turbo: Less Power
  • 10.
    DVB-S2 Advantage • Bestavailable FEC – Excellent coding gain  Minimize leased bandwidth  Maximize throughput  Permits smaller antenna • Widest range of modulation and code rates – 28 combinations allow for optimal link design for any operating condition  QPSK, 8PSK, 16APSK and 32APSK • Supports Adaptive Coding & Modulation (ACM) and Variable Coding & Modulation (VCM) • Selectable roll-off – 20%, 25% and 35% support efficient transponder utilization 10Comtech EF Data Proprietary
  • 11.
    At same C/NDVB-S2 will be 30% more efficient than DVB-S DVB-S Efficiency Curves DVB-S2 Efficiency Curves 11Comtech EF Data Confidential
  • 12.
    Coding / FEC (ForwardError Correction) • Does not change your Signal to Noise ratio • Does nothing to improve your signal quality • FEC’s simply correct errors lost in transmission • But not all FEC’s are created equally! 12
  • 13.
    Coding / FEC (ForwardError Correction) • Shannon-Hartley Bound: There is a maximum bound on the amount of error free data that can be transmitted though a noisy transmission medium 13 Coding Type Vs. Shannon Bound Sequential or Viterbi + 4-8 dB Turbo Product Codes + 2-3 dB Versa FEC + 1-2 dB DVB-S2 LDPC+BCH + 0.7 – 1.5 dB
  • 14.
    Advances in CodingGain 14 Viterbi 1/2 Viterbi 3/4 Turbo 1/2 Turbo 3/4 Versa FEC .533 VersaFEC .706 DVB-S2 1/2 DVB-S2 3/4 Viterbi 7/8 Turbo 7/8 DVB-S2 8/9 0 0.5 1 1.5 2 2.5 0 1 2 3 4 5 6 7 8 9 10 SpectralEff. Eb/No Coding Comparison Shannon Limit QPSK
  • 15.
    Advances in CodingGain on: Fixed BW Maximize Throughput 15 Viterbi + RS TPC Coding Versa FEC DVB-S2 Fixed C/N 6.0 dB 6.0 dB 6.0 dB 6.0 dB Best Modulation / Coding for Es/No QPSK ½ QPSK ¾ QPSK .803 QPSK 5/6 (.827) Spectral Efficiency 0.92 bits / Hz 1.5 bits / Hz 1.61 bits / Hz 1.65 bits / Hz BW = SR 5.0 MHz 5.0 MHz 5.0 MHz 5.0 MHz User Data Rate 4.6 Mbps 7.5 Mbps 8.1 Mbps 8.3 Mbps
  • 16.
    VersaFEC™ • VersaFEC isa patented (covered by U.S. patents 7,353,444 and 7,415,659. Other patents pending.) system of short-block, low latency Low Density • Parity Check (LDPC) codes designed to support latency-sensitive applications, such as cellular backhaul over satellite • Supports Adaptive Coding & Modulation (ACM) • VersaFEC was developed by Comtech AHA in collaboration with Comtech EF Data VersaFEC is a Trademark of Comtech AHA 16Comtech EF Data Proprietary
  • 17.
    VersaFEC Modulation &Code Rates • VersaFEC supports 12 different modulation and code rates for ACM and CCM Modulation Code Rate Spectral efficiency (bps/Hz) Block Size (bits) Eb/No (typical) Es/No (Typical) 64 kbps 128 kbps 256 kbps 512 kbps BPSK 0.488 0.49 2k 2.4 dB -0.7 dB 26.0 13.0 6.5 3.3 QPSK 0.533 1.07 4.1k 2.2 dB 2.5 dB 53.0 26.5 13.3 6.6 QPSK 0.631 1.26 4.1k 2.7 dB 3.7 dB 59.0 29.5 14.8 7.4 QPSK 0.706 1.41 4.1k 3.4 dB 4.9 dB 62.0 31.0 15.5 7.8 QPSK 0.803 1.61 4.1k 3.8 dB 5.9 dB 66.0 33.0 16.5 8.3 8-QAM 0.642 1.93 6.1k 4.6 dB 7.5 dB 89.0 44.5 22.3 11.1 8-QAM 0.711 2.13 6.1k 5.2 dB 8.5 dB 93.0 46.5 23.3 11.6 8-QAM 0.780 2.34 6.1k 5.6 dB 9.3 dB 97.0 48.5 24.3 12.1 16-QAM 0.731 2.93 8.2k 6.3 dB 11.0 dB 125.0 62.5 31.3 15.6 16-QAM 0.780 3.12 8.2k 7.0 dB 11.9 dB 129.0 64.5 32.3 16.1 16-QAM 0.829 3.32 8.2k 7.5 dB 12.7 dB 131.0 65.5 32.8 16.4 16-QAM 0.853 3.41 8.2k 8.0 dB 13.3 dB 132.0 66.0 33.0 16.5 End-to-End Latency (ms) Performance (BER = 5.0E-8) 17Comtech EF Data Proprietary
  • 18.
    1 10 100 1000 10000 64 128 256512 1024 2048 Latency(ms) Data Rate (kbps) VersaFEC DVB-S2 Short Block DVB-S2 Normal Block VersaFEC Latency vs. DVB-S2 8-PSK 3/4 (DVB-S2) 8-QAM 0.78 (VersaFEC) 18Comtech EF Data Proprietary 95% lower latency compared to DVB-S2 short block while maintaining coding efficiency 256 kbps Return VersaFEC ~ 23 ms DVB-S2 (Short) ~ 400 ms DVB-S2 (Normal) ~ 800 ms
  • 19.
    Four Pillars ofOptimizing Throughput 19 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
  • 20.
    DoubleTalk® Carrier-in-Carrier® • Basedon patented “Adaptive Cancellation”, Carrier- in-Carrier (CnC) allows carriers in a Duplex satellite link to occupy the same transponder space 20 Without DoubleTalk Carrier-in-Carrier With DoubleTalk Carrier-in-Carrier Carrier-in-Carrier is a Registered Trademark of Comtech EF Data DoubleTalk is a Registered Trademark of Applied Signal Technology, Inc.
  • 21.
    Carrier-in-Carrier Bandwidth Compression • “Carriercanceller” can be used at Hub side for Carrier-in-Carrier bandwidth compression • Carrier cancellation is NOT required at the Remote 21Comtech EF Data Proprietary Without Carrier-in-Carrier With Carrier-in-Carrier
  • 22.
    Four Pillars ofOptimizing Throughput 22 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
  • 23.
    What is ACM? • Adaptive Coding and Modulation (ACM) is a technique that allows for automatic change in Modulation and FEC Code Rate in response to changing link conditions • Symbol Rate and Transmit Power are fixed and the data rate changes as the modulation and code rate are changed – ACM carriers use fixed bandwidth and power on the transponder • Optimizes channel coding and modulation on a frame-by- frame basis – Allows each remote to operate optimally subject to antenna size, location within the footprint, rain fade and other impairments 23
  • 24.
    What is ACM? (cont’d) • A packet based terrestrial interface (e.g. IP/ Ethernet) that can adapt to data rate changes is required for ACM operation • ACM can maximize throughput under all conditions – Rain fade – Inclined orbit satellite operation – Antenna pointing error – System Noise – Interference – Other impairments 24 Available Capacity Without ACM (Fixed Margin) 5 Mbps 4 Mbps 3 Mbps 2 Mbps 1 Mbps 0 Mbps User Traffic 1:00 Time 1:15 1:30 1:45 2:00 2:15 2:30 2:45 3:00 3:15 Additional Capacity From ACM
  • 25.
    Four Pillars ofOptimizing Throughput 25 Coding Gain Carrier in Carrier Technology Adaptive Coding and Modulation WAN Optimization
  • 26.
    Enhanced Generic Stream Encapsulation KeyAdvantages • Low Overhead Encapsulation – Enhanced GSE for the shared outbound  70-80% more efficient compared to MPE (used by DVB-RCS)  20-30% more efficient compared to GSE 26Comtech EF Data Proprietary
  • 27.
    0% 5% 10% 15% 20% 25% 30% 64 128 192256 320 384 448 512 EncapsulationOverhead IP Datagram Size (bytes) MPE GSE CEFD EGSE Enhanced GSE Key Advantages • Low overhead encapsulation for Outbound Voice traffic 27Comtech EF Data Proprietary Comtech’s Enhanced GSE 70-80% more efficient than MPE 20-30% more efficient than GSE
  • 28.
    Streamline Encapsulation Key Advantages •Low Overhead Encapsulation – Ultra low overhead Streamline Encapsulation (SLE) for the return  Patent pending (CEFD)  Reduces encapsulation overhead by – as much as 65% compared to HDLC – as much as 95% compared to AAL5 used in DVB-RCS – as much as 90% compared to proprietary framing used by other VSATs 28Comtech EF Data Proprietary
  • 29.
    Comtech Proprietary &Confidential 29 IP Header Compression • Reduces the Layer 2, 3, 4 header to a few bytes • Reduce IP (VoIP) bandwidth by 60 - 65% – G.729 (8Kbps) voice codec compressed from 24 - 32 Kbps to 8/5 (12 Kbps including O/H). • It can reduce 40 byte IP/UDP/RTP header to as little as 1 byte. • For TCP/IP, 40 byte is reduced to as little as 3 bytes. • Configurable on a per route basis • Reduce Web/HTTP traffic by 10%
  • 30.
    30 Payload Compression • Canreduce payload size by 40 – 50 % • Configurable on a per route basis • Example of savings IP 20 Bytes UDP 8 Bytes RTP 12 Bytes CH 2-4 bytes Payload (Variable Size) Payload (Variable Size) Compression Traffic Without Payload Compression With Payload Compression File Transfer, Web, etc. 2 Mbps 2Mbps * 60% = 1.2 Mbps Savings = 800 kbps 2 Mbps 2 Mbps 1.2 Mbps
  • 31.
    K4 GZIP “PayloadCompression” • K4 GZIP is lossless compression: Bits In = Bits Out • GZIP searches for matches current data against previous data • Decompressor has identical history buffer is able to exactly reconstruct the original sequence • K4 GZIP compression will work with any data interface, CCM, ACM, CnC or any combination • Benefit will vary with data type: web pages, text, documents, email vs. compressed voice and video (various packet sizes) • Pattern recognition: 20 bytes of data is represented by 12 bytes => 40% Savings 31
  • 32.
    Recap on KeyAdvantages: 1L, 2L & 3L Optimization • Designed to provide the most efficient: – Physical layer without compromising latency  Industry leading DVB-S2 and VersaFEC low-latency LDPC FEC  ACM (bi-directional) and VCM  CinC technology – Link layer  Low overhead Enhanced GSE and Ultra-low overhead Streamline Encapsulation – IP & higher layer transport  2nd generation hardware-based lossless payload compression  Header compression  Embedded RAN Optimization option for remote terminals Comtech EF Data Proprietary 32
  • 33.
    What’s new? • Thenew optimization approach previously described can be found in our new product: “Advanced VSAT Series” • The following is a brief description of key features and characteristics of the “CDM-800s Product Line” 33Comtech EF Data Proprietary
  • 34.
    Comtech and Memoteccombined 34 L1Power and bandwidth optimization (superior modulation/FEC and CinC) Technology Benefit Lower OPEX (less bandwidth) Lower CAPEX (smaller dish, less RF) L2 Framing of traffic (Ultra low overhead GSE, Streamline Packet. etc), SLE (vice HDLC) Lowest percentage of user traffic is lost to overhead. ( less bits = less OPEX) E1/E2/E3 Supporting single or multiple E1 with clock extension Customer interface transparency (enabling services)HC PC IPIP support with Header and Payload compression Reduces customer traffic to bear minimum (perfect for VoIP and Html traffic) RAN Optimization Optimizes cellular traffic via traffic redundancy elimination and compression Reduces amount of traffic needed to support cellular traffic by 50% Building value - one layer at a time. Comtech EF Data Confidential IP Opt IP upper layer optimization (acceleration and caching Reduces bandwidth and speeds up user experience when transporting IP over VSAT.
  • 35.
    The Advanced VSATSeries CDM-800 Gateway Router CDM-840 Remote Router CDD-880 Multi-Receiver Router CXU-810 RAN Optimizer 35Comtech EF Data Proprietary
  • 36.
    Specifications Outbound (HUB- to-Remote) Return (Remote-to-HUB) Data Rate:1 - 167 Mbps 16 kbps - 15.35 Mbps (CCM) Symbol Rate: 1 - 62 Msps (QPSK, 8PSK) 1 - 47 Msps (16APSK) 1 - 37 Msps (32APSK) 16 ksps - 4.1 Msps (ACM) 16 ksps - 4.5 Msps (CCM) FEC: DVB-S2 VersaFEC Modulation and Coding Rates: QPSK: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10 16APSK: 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 32APSK: 3/4, 4/5, 5/6, 8/9, 9/10 BPSK 0.488 QPSK 0.533, 0.631, 0/706, 0.803 8QAM 0.642, 0.711, 0.780 16QAM 0.731, 0.780, 0.829, 0.853 Rolloff: 20%, 25% and 35% 20%, 25% and 35% Encapsulation: Enhanced GSE Streamline Encapsulation (SLE) 36
  • 37.
    Supported Protocols RFC 768– UDP RFC 959 – FTP RFC 2597 – AF PHB RFC 791 –IP RFC 1112 – IP Multicast RFC 2598 – Expedite Forwarding RFC 792 – ICMP RFC 1213 – SNMP MIB II RFC 2616 – HTTP RFC 793 – TCP RFC 1812 – IPv4 Routers RFC 3412 – SNMP RFC 826 – ARP RFC 2045 – MIME RFC 3416 – SNMPv2 RFC 856 – Telenet RFC 2474 – Diffserv RFC 3418 – SNMP MIB RFC 862 – Ping RFC 2475 – Diffserv RFC 894 – IP RFC 2578 – SMI 37
  • 38.
    Key Advantages: Flexible& Scalable • Minimal hardware options – CDM-800  Payload compression card  AC or DC Power Supply – CDD-880  Demodulator cards  AC or DC power supply – CDM-840  BUC power supply  AC or DC power supply – ACM/VCM Controller  For larger networks and higher data rates • FAST Upgrade – DVB-S2 from 15 Mbps to 168 Mbps – VersaFEC from 256 kbps to 15.35 Mbps – Header & payload compression options – QoS options (DiffServ) – ACM/VCM Comtech EF Data Proprietary 38 • Highly scalable and flexible platform that can grow with the network
  • 39.
    Advanced VSAT Series KeyAdvantages • Advanced Forward Error Correction (FEC) for maximum bandwidth efficiency – DVB-S2 for the shared outbound – VersaFEC® short-block low latency LDPC for the return channels • Adaptive Coding & Modulation (ACM) – Available for outbound and return – Maximizes network efficiency and availability • Variable Coding & Modulation (VCM) – Allows different levels of protection and quality of service for different applications and user groups 39Comtech EF Data Proprietary
  • 40.
    Advanced VSAT Series KeyAdvantages • Superior availability and service quality – Improved availability  Advanced FEC with ACM/VCM provide additional throughput and margin to cope with fade and other impairments – Lowest Latency  VersaFEC provides lowest latency for return links while providing excellent coding gain – Lowest Jitter  Significantly better jitter performance without the need for excessive buffering, and segmentation and reassembly 40Comtech EF Data Proprietary
  • 41.
    Quality of Service(Q0S) • The Advanced VSAT Series supports multi-level QoS to ensure the highest quality service with minimal jitter and latency for real-time traffic, priority treatment of mission critical applications and maximum bandwidth efficiency. • Supported modes are: – DiffServ – Industry-standard method of providing QoS enabling seamless co-existence in networks that implement DiffServ – Max/Priority – Provides multi-level traffic prioritization with the ability to limit maximum traffic per priority class – Min/Max – Provides a Committed Information Rate (CIR) to each user defined class of traffic with the ability to allow a higher burstable rate depending on availability 41
  • 42.
    Typical 2G /3G Network – E1 & IP 42 32 E1 32 E1 BSC RNC CXU-810 RAN Optimizer Internet/ Intranet CDM-840 Remote Router E1 GE BTS Node-B GigE CDD-880 Multi-Receiver Router - CDM-800 Gateway Router Comtech RF Up to 168 Mbps Shared Outbound CDM-840 Remote Router E1 GE BTS Node-B CDM-840 Remote Router E1 GE BTS Node-B Comtech EF Data Proprietary NMS
  • 43.
    Typical 2G /3G Network – All IP 43 CDD-880 Multi-Receiver Router - CDM-800 Gateway Router BSC RNC Comtech RF CDM-840 Remote Router BTS Node-B GE Up to 168 Mbps Shared Outbound Internet/ Intranet CDM-840 Remote Router BTS Node-B GE CDM-840 Remote Router BTS Node-B GE Comtech EF Data Proprietary GigE NMS
  • 44.
    Typical Data Network 44ComtechEF Data Proprietary GigabitEthernet DVB-S2 O utbound VersaFEC Return CDD-880 Multi-Receiver Router CDM-800 Gateway Router GigE CDM-840 Remote Router GigE CDM-840 Remote Router GigE CDM-840 Remote Router Internet/ Intranet WAN Optimization/ Application Acceleration NMS
  • 45.
    Solar Powered OutdoorBase Station 45 < 50 Watts Low Power BUC ODM-840 Micro Outdoor BTS Comtech EF Data Proprietary
  • 46.
    Companion Products • NetworkManagement System • ACM/VCM Controller • CLO-10 for Hub side BW Cancellation (Carrier-in-Carrier) • Memotec’s CX-U Series for 2G/3G RAN Optimization • Stampede’s FX Series WAN Optimization and Application Acceleration Comtech EF Data Proprietary 46
  • 47.
    The Advanced VSATSeries • Builds on Comtech EF Data’s legacy of providing the most efficient SATCOM solutions • Provides a superior alternative to those requiring high performance, high quality services in a Hub-Spoke environment – Cellular backhaul with RAN Optimization – Corporate networks – Internet access (ISP) – Maritime & Offshore communications – Govt. & Defense communications – Universal Service Obligation (USO) networks 47Comtech EF Data Proprietary
  • 48.
    Advanced SATCOM Solutions •Comtech EF Data is the leading provider of Advanced SATCOM Solutions Oil & Gas High Speed Communications Maritime Cellular Backhaul Disaster Recovery / Emergency Services Government & Defense Communications 48Comtech EF Data Proprietary
  • 49.
    Management • Devices canbe managed using – SNMP – Web browser • Network Management System – Powered by COMPASS Comtech EF Data Proprietary 49
  • 50.
  • 51.
    Advanced VSAT NMS •Based on industry leading Newpoint Compass Monitor and Control System • Licensed by number of devices to be supported from a server • Every system includes full Compass software • 5 concurrent TrueNorth user interface licenses • SNMP Manager • 2 Year Warranty 51Comtech EF Data Proprietary
  • 52.
    Technology Leadership • ComtechEF Data has a long tradition of being a technology and market leader in the SATCOM industry – First to offer Turbo Product Codes (TPC) – First to offer Low Density parity Check Codes (LDPC) – First to offer 8-QAM Modulation – First to offer 64-QAM Modulation – First to offer DoubleTalk Carrier-in-Carrier – First to offer VersaFEC short-block low latency LDPC – First to offer Payload compression in a satellite modem – First to offer Header compression in a satellite modem – First to offer ultra low overhead Streamline Encapsulation (SLE) 52Comtech EF Data Proprietary
  • 53.
    Optimized Backhaul SolutionsAllow for Cost-Effective Satellite Extension to the Microwave Infrastructure 53 BW Comparative backhaul advantage + 6 E1 6 E1 Microwave 5 E1 4 E1 3 E1 2 E1 Satellite 1 E1 1/2 E1 50 100 300 500 +500distance (km) Relative Bandwidth (%) – for same data rate -110-100-90-80-70-60-50-40-30-20-100102030405060708090100110 16QAM 7/8 16QAM 3/4 8PSK 5/6 8PSK 2/3 QPSK 7/8 QPSK 3/4 QPSK 1/2 QPSK 1/2 = 100% Without DoubleTalk Carrier-in-Carrier With DoubleTalk Carrier-in-Carrier
  • 54.
    CEFD Product Positioning (CellularBackhaul) 54 1 TRX 3 TRX 6TRX 1E1 4E1 E2 E3 Sites 01020100+ Capacity Advanced VSAT (Point-to-Multipoint) CDM-570 with RAN Module (Point-to-Point) CDM-625 CnC + CX-U (Point-to-Point) CDM-750 CnC (Point-to-Point)
  • 55.
    Questions / Comments? Thank You! 55Comtech EF Data Proprietary
  • 56.
    Comtech EF Data 2114West 7th Street Tempe, AZ 85281 USA Tel +1.480.333.2200 FAX +1.480.333.2540 sales@comtechefdata.com www.comtechefdata.com CEFD Latin America Lewis Cunnigham Sr. Sales Director Marcos Jannuzzi Johnny Marmolejos Sales Director / Brazil Sr. Sales Engineer