Signal generation method and signal generation device

A transmission method comprising:ngenerating coded blocks made up of a plurality of bits by using a predetermined error correction block coding scheme;generating, for each of a plurality of slots, a first transmission signal z1 and a second transmission signal z2 from the coded blocks; andtransmitting the first transmission signal z1 from a first antenna of a first base station at a first period at a first frequency, and the second transmission signal z2 from a second antenna of a second base station at the first period at the first frequency,the transmission signal generation including:ngenerating, for each of the plurality of slots, a first modulated signal s1 and a second modulated signal s2 from each of the coded blocks;with respect to the first modulated signal s1 and the second modulated signal s2, applying precoding expressed by a fixed matrix F, andthe matrix F being expressed as:

A transmission apparatus comprising:nan encoder that generates coded blocks made up of a plurality of bits by using a predetermined error correction block coding scheme;a transmission signal generator that generates, for each of a plurality of slots, a first transmission signal z1 and a second transmission signal z2 from the coded blocks;a first transmitter that transmits the first transmission signal z1 from a first antenna of a first base station at a first period at a first frequency; anda second transmitter that transmits the second transmission signal z2 from a second antenna of a second base station at the first period at the first frequency,the transmission signal generator including:na modulated signal generator that generates, for each of the plurality of slots, a first modulated signal s1 and a second modulated signal s2 from each of the coded blocks;a pre-coder that applies precoding expressed by a fixed matrix F with respect to the first modulated signal s1 and the second modulated signal s2; andthe matrix F being expressed as:

A reception method comprising:nacquiring a reception signal obtained by receiving a first transmission signal z1 transmitted from a first antenna of a first base station at a first period at a first frequency and a second transmission signal z2 transmitted from a second antenna of a second base station at the first period at the first frequency, the first transmission signal z1 and the second transmission signal z2 having been generated by a predetermined generation process; andobtaining reception data by applying a demodulation process corresponding to the predetermined generation process to the reception signal,the predetermined generation processnbeing a process to generate, for each of a plurality of slots, the first transmission signal z1 and the second transmission signal z2 from each of coded blocks having been generated by using a predetermined error correction block coding scheme and made up of a plurality of bits, andincluding:ngenerating, for each of the plurality of slots, a first modulated signal s1 and a second modulated signal s2 from each of the coded blocks;with respect to the first modulated signal s1 and the second modulated signal s2, applying precoding expressed by a fixed matrix F,the matrix F being expressed as:

A reception apparatus comprising:nan acquirer that acquires a reception signal obtained by receiving a first transmission signal z1 transmitted from a first antenna of a first base station at a first period at a first frequency and a second transmission signal z2 transmitted from a second antenna of a second base station at the first period at the first frequency, the first transmission signal z1 and the second transmission signal z2 having been generated by a predetermined generation process; anda demodulator that obtains reception data by applying a demodulation process corresponding to the predetermined generation process to the reception signal,the predetermined generation processnbeing a process to generate, for each of a plurality of slots, the first transmission signal z1 and the second transmission signal z2 from each of coded blocks having been generated by using a predetermined error correction block coding scheme and made up of a plurality of bits, andincluding:ngenerating, for each of the plurality of slots, a first modulated signal s1 and a second modulated signal s2 from each of the coded blocks;with respect to the first modulated signal s1 and the second modulated signal s2, applying precoding expressed by a fixed matrix F,the matrix F being expressed as: