An apparatus and method for inserting side information in a communication system.
The apparatus includes a channel encoder for encoding input data in a frame unit
to generate encoded data symbols, a side information generator for generating the
side information, a selector for generating a select control signal designating
a position into which the side information is inserted, a side information inserter
for inserting the side information between the encoded data symbols in response
to the select control signal, and a spreader for spreading the output of the side
information inserter.