Transmission method and transmission device

A transmission device, comprising:

• an encoding processor that generates a first encoded block and a second encoded block using a forward error correction coding scheme;
• a modulation processor that generates a plurality of first symbols and a plurality of second symbols from the first encoded block and generates a plurality of third symbols and a plurality of fourth symbols from the second encoded block;
• a phase change processor that changes a phase of the plurality of second symbols and the plurality of fourth symbols;
• an orthogonal frequency division multiplexing (OFDM) symbol generation processor that generates a first OFDM symbol by arranging the first symbols and the third symbols on data carriers of the first OFDM symbol and generates a second OFDM symbol by arranging the second symbols and the fourth symbols;
• and
• a transmitting processor that transmits the first OFDM symbol and the second OFDM symbol by using a plurality of antennas, wherein
• in the first OFDM symbol, the first symbols are allocated with a predetermined period and the third symbols are allocated on data carriers adjacent to the first symbols,
• in the second OFDM symbol, the second symbols are allocated with the predetermined period and the fourth symbols are allocated on data carriers adjacent to the second symbols,
• amounts of the phase change applied to the second symbols are regularly changed in a frequency direction, and
• an amount of the phase change applied to each of the fourth symbols is same as that applied to each of the adjacent second symbols.