A ORTHOGONAL FEQUENCY DIVISION MULTIPLEXING SYSTEM MULTIPLE USING DVB-T AND DAB

摘要

This invention relates to a video signal by transmitting a frequency is allocated for DVB-T frequency domain at the same time in DAB relates to sound at a DVB-T and DAB combine orthogonal to all divided band receiving system output, demodulator stage in the Viterbi decoder to demodulate the digital OFDM signal by interleaving the output is restored to the original information via a time de-mapping the and a time interleaver for the output, having an error correction unit that corrects an error of an OFDM signal is recovered through the Viterbi decoder the other hand, by dividing the OFDM signal outputted from the error correction stage in the video signal and the audio signal is a video image signal decoder made up to the audio signal is transmitted to the MPEG demultiplexer to the audio decoder, to listen to the audio broadcast DAB and via TV and in that to listen to the audio through the audio broadcasting of DVB-T.