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DIGITAL RADIO GUIDE TERRESTRIAL TRANSMISSION SYSTEMS - ISDB-TSB
40
(8) Transmission capacities
The transmission capacities of the single-segment and the triple-segment are
shown in Table 4.3 and 4.4 respectively.
Table 4.3: Information bit rates for
the single-segment transmission (Segment BW=6/14MHz)
Information Rates (kbps)
Carrier Modulation Convolutional Code
Guard
Interval
Ratio 1/4
Guard
Interval
Ratio 1/8
Guard
Interval
Ratio 1/16
Guard
Interval
Ratio 1/32
1/2 280.85 312.06 330.42 340.43
DQPSK 2/3 374.47 416.08 440.56 453.91
3/4 421.28 468.09 495.63 510.65
QPSK 5/6 468.09 520.10 550.70 567.39
7/8 491.50 546.11 578.23 595.76
1/2 561.71 624.13 660.84 680.87
2/3 748.95 832.17 881.12 907.82
16QAM 3/4 842.57 936.19 991.26 1021.30
5/6 936.19 1040.21 1101.40 1134.78
7/8 983.00 1092.22 1156.47 1191.52
1/2 842.57 936.19 991.26 1021.30
2/3 1123.43 1248.26 1321.68 1361.74
64QAM 3/4 1263.86 1404.29 1486.90 1531.95
5/6 1404.29 1560.32 1652.11 1702.17
7/8 1474.50 1638.34 1734.71 1787.28
Table 4.4: Information bit rates for the triple-segment transmission*
5
Information Rates (kbps)
Carrier Modulation Convolutional Code
Guard
Interval Ratio
1/4
Guard
Interval Ratio
1/8
Guard
Interval Ratio
1/16
Guard
Interval Ratio
1/32
1/2 0.842 0.936 0.991 1.021
DQPSK 2/3 1.123 1.248 1.321 1.361
3/4 1.263 1.404 1.486 1.531
QPSK 5/6 1.404 1.560 1.652 1.702
7/8 1.474 1.638 1.734 1.787
1/2 1.685 1.872 1.982 2.042
2/3 2.246 2.496 2.643 2.723
16QAM 3/4 2.527 2.808 2.973 3.063
5/6 2.808 3.120 3.304 3.404
7/8 2.949 3.276 3.469 3.574
1/2 2.527 2.808 2.973 3.063
2/3 3.370 3.744 3.965 4.085
64QAM 3/4 3.791 4.212 4.460 4.595
5/6 4.212 4.680 4.956 5.106
7/8 4.423 4.915 5.204 5.361
5 In the case of the triple-segment transmission, information rate can be calculated by the combination of segment
information rates.