SN User's Guide - ESC Home - NASA

Revision 10 8-40 450-SNUG
Table 8-13. Potential KaSAR IF Service Implementation Loss and LEO Program Track Required Prec
Equations for Various Data Rates Using Different Modulation and Coding Techniques (cont’d)
Return IF Service Configuration
(notes 4, 9)
8PSK (650
MHz IF
service)
QPSK/
SQPSK
Data
Rates
Required Eb/No
at input to
receiver for 10 -5
BER (notes 1, 4)
Theoretical
Required
Eb/No
(note 1)
Implementation
Loss Amounts
(notes 1, 4)
Required Prec (K) at
TDRS (dBW) for a 10 -5
BER (LEO Program
Track) (note 4)
(128,120)x(128,120) TPC 1.5 Gbps 10.8 dB
3.9 dB -240.0 + 10 log (dr)
1.2 Gbps 10.1 dB 6.9 dB
3.2 dB -241.1 + 10 log (dr)
(8176,7136) LDPCC
(note 8)
Uncoded (650 MHz IF
service)
(128,120)x(128,120) TPC
(note 6)
(8176,7136) LDPCC
(notes 6, 8)
(2048, 1024) AR4JA
LDPCC
< 1 Gbps 9.4 dB 2.5 dB -242.1 + 10 log (dr)
1.5 Gbps 12.0 dB
4.7 dB -238.2 + 10 log (dr)
1.2 Gbps 11.1 dB 7.3 dB
3.8 dB -239.9 + 10 log (dr)
< 1 Gbps 10.0 dB 2.7 dB -241.4 + 10 log (dr)
< 600 Mbps
18.0 dB 13.1 dB
4.9 dB -230.6 + 10 log (dr)
400 Mbps 7.9 dB
4.0 dB -243.9 + 10 log (dr)
300 Mbps 6.6 dB 3.9 dB
2.7 dB -245.3 + 10 log (dr)
< 200 Mbps 6.1 dB 2.2 dB -245.9 + 10 log (dr)
400 Mbps 8.4 dB
4.0 dB -243.3 + 10 log (dr)
300 Mbps 7.3 dB 4.4 dB
2.9 dB -244.6 + 10 log (dr)
< 200 Mbps 6.4 dB 2.0 dB -245.6 + 10 log (dr)
200 Mbps 4.0 dB
2.3 dB -248.0 + 10 log (dr)
1.7 dB
< 150 Mbps 3.6 dB 1.9 dB -248.4 + 10 log (dr)