Advanced Forward Error Correction And Modulation; Bandwidth Compression - Comtech EF Data DMD-2050E Installation And Operation Manual

DMD2050E Universal Product Modem
Switchable between spur-free 70/140 MHz and L-Band operations
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AC or DC Power Input
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Functions in virtually all Military and Commercial Satellite IP, Telecom, Video and Internet
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applications
Military standards include:
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MIL-STD-188-165A
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MIL-STD-188-16B (Draft Standard)
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Commercial standards include:
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IDR
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IBS
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DVB
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1.2.2 Advanced Forward Error Correction and Modulation

The DMD2050E has bandwidth-efficient, advanced forward error correction (FEC). Advanced
FEC options include:
Low Density Parity Check (LDPC)
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Turbo Product Codes (TPCs)
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165B Turbo Codes
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Legacy functions for Viterbi, Trellis, Concatenated Viterbi Reed-Solomon, and Sequential FEC
are included.
Modulation types include:
BPSK
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QPSK
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OQPSK
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1.2.3 Bandwidth Compression

DoubleTalk Carrier-in-Carrier
®
and increases throughput without using additional transponder resources.
MN-DMD2050E Revision 2
8-PSK
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8-QAM
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bandwidth compression reduces satellite bandwidth requirements
®
STANAG 4486 Edition 3
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OM73
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16-QAM
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16-APSK
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Introduction
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