CDM-625 Advanced Satellite Modem
Revision 1
Forward Error Correction Options
MN-0000036 (Ref MN/CDM625.IOM)
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1 2 3 4 5 6 7 8 9 10 11 12
Eb/No in dB
Uncoded
BPSK/QPSK
Comtech Turbo Product Codec
Rate 21/44 BPSK/QPSK/OQPSK
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 21/44
B/Q/OQPSK
Typical performance
* Rate 21/44 QPSK is
shown as R1/2 on the
front panel
* The OQPSK acquisition
and tracking thresholds
are approx. 1 dB worse
than the QPSK case
Notes:
Figure 7-6. Rate 21/44 BPSK, QPSK, OQPSK Turbo Product Coding
7–16
Содержание CDM-625
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Страница 26: ...CDM 625 Advanced Satellite Modem Revision 1 Preface MN 0000036 Ref MN CDM625 IOM xxiv Notes...
Страница 48: ...CDM 625 Advanced Satellite Modem Revision 1 Introduction MN 0000036 Ref MN CDM625 IOM 1 22 Notes...
Страница 148: ...CDM 625 Advanced Satellite Modem Revision 1 Front Panel Operation MN 0000036 Ref MN CDM625 IOM 5 76 Notes...
Страница 182: ...CDM 625 Advanced Satellite Modem Revision 1 Ethernet Management MN 0000036 Ref MN CDM625 IOM 6 34 Notes...
Страница 206: ...CDM 625 Advanced Satellite Modem Revision 1 Forward Error Correction Options MN 0000036 Ref MN CDM625 IOM 7 24 Notes...
Страница 240: ...CDM 625 Advanced Satellite Modem Revision 1 EDMAC Channel MN 0000036 Ref MN CDM625 IOM 11 4 Notes...
Страница 244: ...CDM 625 Advanced Satellite Modem Revision 1 Offset QPSK Operation MN 0000036 Ref MN CDM625 IOM 13 2 Notes...
Страница 258: ...CDM 625 Advanced Satellite Modem Revision 1 Eb No Measurement MN 0000036 Ref MN CDM625 IOM B 4 Notes...
Страница 320: ...CDM 625 Advanced Satellite Modem Revision 1 Remote Control MN 0000036 Ref MN CDM625 IOM D 60 Notes...
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