DVB-C
Standard DVB-C is the application of the standard DVB to the rope drives.
This standard takes account of the characteristics of a transmission on cable:
- the band available is reduced: 8 MHz, one thus will need an important spectral effectiveness,
- the signal is protected and amplified, the signal report/ratio with noise is good,
- the disturbances must with the echoes caused by a bad adaptation of the catch user.
To obtain a good spectral effectiveness, one uses a modulation QAM -64 associated with a linear equalizer or DFE (Decision Egalizer Feedback) based on the criterion of the zero-sustained pressure in order to cancel the intersymbol interference.
Standard DVB-C is not compatible with the standard DVB-T.
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