Transmitting apparatus, receiving apparatus, and control methods thereof

摘要

A transmitting apparatus, a receiving apparatus and methods of controlling these apparatuses are provided. The transmitting apparatus includes: an input processor configured to process a plurality of input streams to generate a plurality of base band frames; a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the plurality of baseband frames; a symbol generator configured to add signaling data to the plurality of baseband frames output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction, insert a pilot in the OFDM symbol according to the selected pilot pattern, and transmit a stream including the pilot-inserted OFDM symbol.

主权项

1. A transmitting apparatus, comprising:
an input processor configured to process an input stream to generate at least one frame; a bit interleaved and coded modulation (BICM) processor configured to perform forward error correction (FEC) coding, constellation mapping, and interleaving on the frame; a symbol generator configured to add signaling data to the frame output from the BICM processor to generate an orthogonal frequency division multiplexing (OFDM) symbol; and a transmitter configured to select at least one of a plurality of pilot patterns based on a fast Fourier transform (FFT) size and a guard interval fraction, insert a pilot in the OFDM symbol according to the selected pilot pattern, and transmit a stream including the pilot-inserted OFDM symbol, wherein a maximum length of a predetermined sequence inserted into the OFDM symbol is defined based on an FFT size and a guard interval fraction as shown in a following table.Maximum sequence length, NPN (chips)Guard Interval FactionFFT3/6/12/24/36/48/57/72/96/Mode51251251251251251251251251232K 50 50 50 48 48 46 46NANA16K100100100 96 96 92 92 88 84 8K204204200196192188184180172.