Apparatus and method for transmissing data

The data transmission apparatus and method are disclosed. Data transmission device symbol encoder for generating a plurality of source symbols and the at least one recovered symbol from the transmission destination data, and transmits the generated the source symbols and said repair data symbols to a receiver according to an embodiment of the present invention; A control message receiver for receiving a control message, including whether or not the reception of the source symbols and said repair data symbols from said receiving apparatus; And according to the received control message and a code rate controller for adjusting the code rate to generate the recovered symbols.