next up previous contents
Next: ATU-R Up: ADSL Modulation Methods Previous: Synchronization symbol

Cyclic prefix

The last 32 samples of the output of the IDFT ( for k = 480 to 511) are prepended to the block of 512 samples and read out to the D/A converter in sequence. The cyclic prefix is used for data and synchronization symbols.

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