Transmission device, transmission method, reception device, and reception method
By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.
1. A transmission method for transmitting broadcasting data, comprising:
encoding the broadcasting data according to a multi-antenna encoding scheme to generate first orthogonal frequency division multiplexing (OFDM) symbols and second OFDM symbols;
inserting pilots in the first OFDM symbols and the second OFDM symbols to generate first pilot-inserted OFDM symbols and second pilot-inserted OFDM symbols, respectively;
generating a first broadcasting signal based on the first pilot-inserted OFDM symbols and first Layer-1 control information;
generating a second broadcasting signal based on the second pilot-inserted OFDM symbols and second Layer-1 control information; and
transmitting the first broadcasting signal and the second broadcasting signal from a first transmit station and a second transmit station, respectively, wherein
the first broadcasting signal and the second broadcasting signal are transmitted at an identical time and at an identical frequency band,
polarized wave of the first broadcasting signal differs from polarized wave of the second broadcasting signal, and
the first Layer-1 control information and the second Layer-1 control information each include pattern information indicating an arrangement pattern of the pilots.
2. The transmission method according to claim 1 ,
wherein the first broadcasting signal and the second broadcasting signal are transmitted to a first service area and a second service area, respectively, and
wherein the first service area overlaps with the second service area.
3. A reception method for receiving broadcasting data, comprising:
receiving a first broadcasting signal and a second broadcasting signal via a first antenna and a second antenna from a first transmit station and a second transmit station, respectively, the first broadcasting signal and the second broadcasting signal being transmitted at an identical time and at an identical frequency band, polarized wave of the first broadcasting signal differing from polarized wave of the second broadcasting signal, the first broadcasting signal and the second broadcasting signal being generated based on first orthogonal frequency division multiplexing (OFDM) symbols and second OFDM symbols, respectively; and
decoding the first broadcasting signal and the second broadcast signal with first Layer-1 control information and second Layer-1 control information included in the first broadcasting signal and the second broadcasting signal, respectively to generate the broadcasting data, wherein
in the first broadcasting signal and the second broadcasting signal, pilots are inserted in the first OFDM symbols and the second OFDM symbols, respectively, and
the first Layer-1 control information and the second Layer-1 control information each include pattern information indicating an arrangement pattern of the pilots.
4. The reception method according to claim 3 ,
wherein the first broadcasting signal and the second broadcasting signal are transmitted to a first service area and a second service area, respectively, and
wherein the first service area overlaps with the second service area.