| 摘要 |
up nvu i .UUC-23/04/2014 A method of transmitting at least one broadcasting signal having PLP (Physical Layer Pipe) data and preamble data, the method comprising: encoding the PLP data; encoding the preamble data; mapping the encoded PLP data into PLP data symbols by QAM modulations; mapping the encoded preamble data into preamble data symbols by QAM modulations; building a signal frame including the PLP data symbols and the preamble data symbols, wherein the PLP data symbols are mapped into the signal frame based on a data unit, wherein the preamble data symbols include first signaling information for second signaling information and the second signaling information for the PLP data symbols, wherein the first signaling information includes size information of the second signaling information, wherein a size of the data unit is variable; modulating the signal frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; and transmitting the modulated signal frame. WO 2010/101328 PCT/KR2009/002521 [Fig. 1 ] 101 102 103 104 105 - Analog TSGS nput 81CM Frame odulatork Analog Signal TSGE Processork Buil Process output [Fig. 2] C j Er.- Cj Era [I- C) [I- Co T ->& C)) CC o a~ C c~j cU j I I) c~j o~z Ci o* |
