ANSI standard [4] describes a basic ADSL system which uses DMT (Discrete Multitone) modulation. There is also at least one other ADSL system available. This system facilitates Carrierless AM/PM (CAP). In this chapter the DMT modulation method is described.

- Discrete Multitone (DMT)
- ADSL DMT Modulation
- Pilot
- Nyquist frequency
- Modulation by the inverse discrete Fourier transform (IDFT)
- Synchronization symbol
- Cyclic prefix
- ATU-R

Mon Mar 6 12:47:27 EET 1995