Digital Signal Processing Reference
In-Depth Information
net_data_rate = 188/208 • 2/3 • 312/313 • gross_data_rate
= 19.39265846 Mbit/s;
The above equations are based on the following parameter values:
•
8VSB = 3 bit/symbol
•
Reed-Solomon = 188/208
•
Code rate = 2/3 (trellis)
•
Field sync = 312/313
Fig. 23.21.
8VSB spectrum (roll-off filtered with r=0.115)
8VSB
demod.
Tuner
SAW
ADC
Equalizer
FEC
Video
MPEG2
decod.
Audio
Fig. 23.22.
ATSC receiver
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