Patent ID: 7864903

Claim:
A transmission method comprising: an interleaving step of: storing a first data sequence, and a second data sequence that is different from the first data sequence, the first and second data sequences being encoded, transmitting data sequences; interleaving the first data sequence into a first interleaved data sequence using a first interleaving pattern in which an output order pattern of the first data sequence is different from an input order pattern of the first data sequence; and interleaving the second data sequence into a second interleaved data sequence using a second interleaving pattern in which an output order pattern of the second data sequence is different from the output order pattern of the first data sequence; a modulation step of: modulating the first interleaved data sequence into a first modulated symbol; and modulating the second interleaved data sequence into a second modulated symbol; and a transmission step of: generating a first orthogonal frequency division multiplexing symbol mapped over a plurality of subcarriers, from the first modulated symbol; generating a second orthogonal frequency division multiplexing symbol mapped over a plurality of subcarriers, from the second modulated symbol; transmitting the first orthogonal frequency division multiplexing symbol from a first antenna in a specific frequency band and time; and transmitting the second orthogonal frequency division multiplexing symbol from a second antenna in the specific frequency band and time, shared in common with the first orthogonal frequency division multiplexing symbol, wherein: an amount of data interleaved by the first interleaving pattern equals an amount given by multiplying an amount of subcarriers included in the first orthogonal frequency division multiplexing symbol and used for data transmission, by an amount of bits transmitted by one first modulated symbol; an amount of data interleaved by the second interleaving pattern equals an amount given by multiplying an amount of subcarriers included in the second orthogonal frequency division multiplexing symbol and used for data transmission, by an amount of bits transmitted by one second modulated symbol; and the amount of data interleaved by the first interleaving pattern and the amount of data interleaved by the second interleaving pattern are the same.