-58-
A
A
n
n
n
n
e
e
x
x
B
B
:
:
Q
Q
A
A
M
M
R
R
e
e
f
f
e
e
r
r
e
e
n
n
c
c
e
e
I
I
n
n
f
f
o
o
r
r
m
m
a
a
t
t
i
i
o
o
n
n
J.83 Annex A: Table of constellation, bandwidth, symbol rate and bit rate.
Constellation
QPSK
16QAM
32QAM
64QAM 128QAM 256QAM
Minimum bit Rate(Mbps)
Maximum bit Rate(Mbps)
Minimum Bandwidth(MHz)
Maximum bandwidth(MHz)
Minimum Symbol Rate(Mbaud)
Maximum Symbol Rate(Mbaud)
2
14
1.15
8.05
1
7
4
28
1.15
8.05
1
7
5
35
1.15
8.05
1
7
6
42
1.15
8.05
1
7
7
49
1.15
8.05
1
7
8
56
1.15
8.05
1
7
Channel Bandwidth = 1.15 * Symbol Rate
Symbol Rate = Output Bit Rate/m
m = 2
，
4
，
5
，
6
，
7
，
8 Corresponding
：
QPSK
，
16QAM
，
32QAM
，
64QAM
，
128QAM and
256QAM
8MHz Maximum Output Bit Rate
Constellation
C/N Threshold
Maximum Valid
Bit Rate
Channel
Utilization Ratio
16QAM
32QAM
64QAM
128QAM
256QAM
22dB
25dB
28dB
31dB
34dB
25.8Mbps
32.2Mbps
38.7Mbps
44.2Mbps
51.6Mbps
3.2 bit/Hz
4.0 bit/Hz
4.8 bit/Hz
5.5 bit/Hz
6.4 bit/Hz
Maximum Valid Bit Rate = Output Bit Rate * 188 / 204
