Figure 7
Cyclic extension. A cyclic prefix and cyclic suffix are appended to the DMT symbol. After
inverse fast Fourier transform (IFFT), a cyclic prefix and cyclic suffix are appended to the
DMT symbol. Samples are copied from the end of the DMT symbol and added to the
beginning of the symbol, which represents the cyclic prefix, here denoted LCP. The cyclic
suffix is created by copying samples from the beginning of the symbol and adding them to
the end of the symbol, here denoted LCS. ß illustrates the portion of the symbol that is windowed
and added to ß samples from the end of the previous symbol, which overlaps with
the current symbol.