A VSB reception system includes a sequence generator for decoding a symbol
corresponding to the supplemental data and generating a predefined
sequence included in the supplemental data at VSB transmission system. The
reception system also includes a modified legacy VSB receiver for
processing the data received from the VSB transmission system in a reverse
order of the VSB transmission system by using the sequence, and a
demultiplexer for demultiplexing the data from the modified legacy VSB
receiver into the MPEG data and the supplemental data. The VSB reception
system also includes a supplemental data processor for processing the
supplemental data segment from the demultiplexer in a reverse order of the
transmission system, to obtain the supplemental data, thereby carrying out
the slicer prediction, decoding, and symbol decision more accurately by
using the predefined sequence, to improve a performance.