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8.2
DVB-T
Display of the measures of:
•
BERi:
error rate before Viterbi
•
BERo:
error rate after Viterbi
•
PER:
error rate after Reed Solomon (error rate packet)
•
MER:
modulation error rate
BERx: bits' error rate
Ratio between the number of false bits / number of transmitted bits during the measurement time
PER: 'paquets' error rate
Ratio between the number of false packets / number of transmitted packets during the measurement time
Recall: Under DVB-T, a packet is made of 204 octets; a packet is "false" if it includes more than 8 wrong oc-
tets (correction by Reed Solomon coding).
DEMODULATEUR
TUNER
BERi
REED
DECODAGE
VITERBI
SOLOMON
BERo
PER
p.
53
MPEG
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