| 摘要 |
<p>Provided is a Vestigial Side Band Digital Television (DTV) transmitter /receiverbased on Advanced Television System Committee A/53. The invention providesDTV transmitter/receiver having a dual stream structure through generationof robust data which has a transmission rate a fourth as fast as that of normal data,and a method thereof . The DTV transmitter includes: input means for receivingdigital video data stream including normal and robust data; encoding means forperforming 1/4 rate coding on the digital video data stream so that one bit canbe transmitted through two symbols; and transmitting means for modulating/transmittingoutput signals of the encoding means. This invention can reduce SNR and satisfyTOV of robust data by performing additional FEC on robust data, transmitting/receiving1/4 rate coded robust data, which are capable of transmitting one-bit data fortwo symbols, and improving decoding ability of an equalizer and a trellis decoderof a DTV receiver.</p> |
