SCPC%20Satellite%20Link

1
SCPC Satellite Link

• Single Customer Per Carrier (SCPC)
• Most simple and popular VSAT service
• 64Kbps-8Mbps
• Asymmetric speeds possible, e.g. 256/64Kbps

2
Efficient Space Segment Usage
Up to 74Mbps via standard 36MHz transponder
52Mb/s16QAM
8Mb/s8PSK
14Mb/s8PSK
3
DVB-RCS Architecture
Return Channel128Kbps 2MbpsMF/TDMA
User Terminals
Satellite modem SOHO / Consumer
Standard DVB up to 48Mbps
Hub Station
PC
Internet
Private Network
4
DVB-RCS Outbound
TCP/IPNetwork
Regular DVBOutbound
DVB-RCSReturn Channel Control Table Insertion
5
DVB-RCS Inbound

• QPSK, Turbo, FEC 1/2 - 6/7
• 128Kbps 2Mbps per carrier
• Fast-hopping between carriers up to 20MHz
• MPEG or ATM Encapsulation
• MF/TDMA Capacity assignment types
• Continuos Rate Assignment
• Rate Based Dynamic Capacity
• Volume Based Dynamic Capacity
• Free Capacity Assignment

6
DVB-RCS Inbound
Demodulator bank for 24 carriers Includes Control
Channel Unit and Control Supervision and I/O
board ----gt Ethernet 100BaseTX
7
DVB-RCS Hub Structure
InboundDemodulator Bank
CISCO Router IP Routing,Outbound QoS Management
DVB Outbound with Return ChannelControl Table
Insertion
DVB-RCS NMS Inbout QoS Management (Radio
Resource Management)
8
DVB-RCS Terminals
Nera SatLink 1900/3000 Newtec NTC 2094/2515