Digital broadcasting transmission and reception devices and methods thereof

摘要

Digital broadcasting transmission and reception devices and methods thereof are provided. The digital broadcasting transmission device includes a randomizer which randomizes a dual transport stream including a normal stream and a robust stream, a supplementary reference signal inserter which inserts a certain supplementary reference signal into a stuffing region included in the randomized dual transport stream, a Reed-Solomon (RS) encoder which adds a parity into a parity region included in the dual transport stream, a robust processor which configures a new dual transport stream by convolution-encoding the robust stream among the dual transport stream, an interleaver which interleaves the configured dual transport stream, a trellis encoder which trellis-encode the interleaved dual transport stream, and a modulator which transmits the trellis-encoded dual transport stream. Accordingly, a sub-channel can be provided in which the robust data and the supplementary reference signal will be transmitted.

主权项

1. A digital broadcasting system comprising:
a demodulator to demodulate a transport stream comprising normal data, additional data and a known symbol; a symbol detector to detect a location of the known symbol from the demodulated transport stream; and an equalizer to equalize the demodulated transport stream using the known symbol; wherein the additional data is error-correction encoded at a transmission end, wherein the error-correction encoding of the additional data at the transmission end comprises interleaving the additional data and convolutional encoding the additional data, wherein the error-correction-encoded additional data is multiplexed with the normal data, which is not error-correction-encoded during the error-correction encoding of the additional data, wherein, before the transport stream is received for the demodulation at the demodulator, a parity is added to the transport stream and a compatibility parity is generated to replace the parity based on the transport stream to which the parity is added and which is trellis-encoded, and wherein an output of the symbol detector is provided to the demodulator and the equalizer.