The apparatus for frequency selective digital transmission

The present invention, the preamble transmission processing means for spreading a predetermined spreading code group to generate a preamble for frame synchronization on the frequency-selective digital sender; Transmission processing means for spreading a header prescribed spreading code group by constructing a header containing the data attribute information; In accordance with the selected transmission mode and a spreading scheme for the serial transfer data - the data transmission processing means for the spread in frequency selective spreading code and then performs the parallel conversion; And by multiplexing each of the spread preamble, header and data by the preamble transmission processing means, the processing means transmits the header and the data transmission processing means is configured to include a multiplexing means for transmitting a digital signal.