Patent ID: 8428160

Claim:
A multi-carrier digital mobile multimedia broadcast system comprising a transmitter and a receiver, the transmitter comprising: a RS encoding and byte interleaving module for RS encoding and byte interleaving an upper layer data stream based on a physical logical channel; a LDPC encoder for LDPC encoding the data outputted from the RS encoding and byte interleaving module to obtain bit data; a bit interleaver for bit interleaving the bit data outputted from the LDPC encoder; a constellation mapping module, in which the data outputted from the bit interleaver is constellation mapped; a frequency-domain symbol generator for multiplexing together a discrete pilot, a continuous pilot containing system information and data symbol being constellation mapped to form an OFDM frequency-domain symbol; a scrambler for scrambling the OFDM frequency-domain symbol using pseudo-random sequence; an IFFT transformer for performing IFFT transformation to the frequency-domain symbol outputted from the scrambler to generate an OFDM time-domain symbol; and a time-domain framing device for adding a beacon in formt of the OFDM time-domain symbol to form a time slot and concatenating the time slots to form a physical signal frame, the beacon comprising a transmitter identification signal and synchronous sequences, the transmitter identification signal being obtained by performing BPSK mapping, IFFT transforming and circular extending with the frequency-domain random sequence in turn.