next up previous contents
Next: Pilot Up: ADSL Modulation Methods Previous: Discrete Multitone (DMT)

ADSL DMT Modulation


In ADSL DMT-systems the downstream channels are divided into 256 4-kHz-wide tones. The upstream channels are divided into 32 subchannels. See also the frequency spectrum of the ADSL-channels in figure gif.

Some of the most important parameters for standardized ADSL DMT are described below. Note, that these values differ for both ATU-C and ATU-R.

Kimmo K. Saarela
Mon Mar 6 12:47:27 EET 1995