Transmission method, transmission device, reception method, and reception device

A transmission method comprising:nan encoding step of generating an encoded block using a predetermined error correction block encoding method;a generation step of generating a first transmission signal z1 and a second transmission signal z2 by performing, for each of a plurality of slots, a precoding process on a first modulated signal s1 and a second modulated signal s2 that have been generated from the encoded block; anda transmission step of transmitting the first transmission signal z1 and the second transmission signal z2 from a first antenna and a second antenna, respectively, in the same frequency at the same time, whereinthe generation stepfurther selects one matrix from among N matrices F[i], where i is an integer no less than 0 and no more than N−1, and N is an integer 3 or greater, by hopping between the matrices over each of the plurality of slots, the N matrices F[i] each defining the precoding process, andgenerates the transmission signal z1 and the transmission signal z2 by performing, for each of the plurality of slots, a precoding process corresponding to the selected matrix F[i] on the first modulated signal s1 and the second modulated signal s2,the first transmission signal z1 and the second transmission signal z2 satisfy (z1, z2)T=F[i](s1, s2)T,(z1, z2)T being a transposed vector of (z1, z2), and(s1, s2)T being a transposed vector of (s1, s2),the N matrices F[i] satisfy

A transmission apparatus comprising:nan encoding unit configured to generate an encoded block using a predetermined error correction block encoding method;a generation unit configured to generate a first transmission signal z1 and a second transmission signal z2 by performing, for each of a plurality of slots, a precoding process on a first modulated signal s1 and a second modulated signal s2 that have been generated from the encoded block; anda transmission unit configured to transmit the first transmission signal z1 and the second transmission signal z2 from a first antenna and a second antenna, respectively, in the same frequency at the same time, whereinthe generation unitis further configured to select one matrix from among N matrices F[i], where i is an integer no less than 0 and no more than N−1, and N is an integer 3 or greater, by hopping between the matrices over each of the plurality of slots, the N matrices F[i] each defining the precoding process, andgenerates the transmission signal z1 and the transmission signal z2 by performing, for each of the plurality of slots, a precoding process corresponding to the selected matrix F[i] on the first modulated signal s1 and the second modulated signal s2,the first transmission signal z1 and the second transmission signal z2 satisfy (z1, z2)T=F[i](s1, s2)T,(z1, z2)T being a transposed vector of (z1, z2), and(s1, s2)T being a transposed vector of (s1, s2),the N matrices F[i] satisfy

A reception method comprising:nan acquisition step of acquiring a reception signal obtained by receiving a first transmission signal z1 and a second transmission signal z2 transmitted from a first antenna and a second antenna, respectively, in the same frequency at the same time, the first transmission signal z1 and the second transmission signal z2 having been generated as a result of a predetermined generation process performed on a first modulated signal s1 and a second modulated signal s2, the first modulated signal s1 and the second modulated signal s2 having been generated from an encoded block generated with use of a predetermined error correction block encoding method; anda demodulation step of performing a demodulation process on the acquired reception signal, the demodulation process corresponding to the predetermined generation process, whereinthe predetermined generation process includes:selecting one matrix from among N matrices F[i], where i is an integer no less than 0 and no more than N−1, and N is an integer 3 or greater, by hopping between the matrices over each of the plurality of slots, the N matrices F[i] defining a precoding process that is performed on a plurality of modulated signals, andgenerating the transmission signal z1 and the transmission signal z2 by performing, for each of the plurality of slots, a precoding process corresponding to the selected matrix F[i] on the first modulated signal s1 and the second modulated signal s2,the first transmission signal z1 and the second transmission signal z2 satisfy (z1, z2)T=F[i](s1, s2)T,(z1, z2)T being a transposed vector of (z1, z2), and(s1, s2)T being a transposed vector of (s1, s2),the N matrices F[i] satisfy

A reception apparatus comprising:nan acquisition unit configured to acquire a reception signal obtained by receiving a first transmission signal z1 and a second transmission signal z2 transmitted from a first antenna and a second antenna, respectively, in the same frequency at the same time, the first transmission signal z1 and the second transmission signal z2 having been generated as a result of a predetermined generation process performed on a first modulated signal s1 and a second modulated signal s2, the first modulated signal s1 and the second modulated signal s2 having been generated from an encoded block generated with use of a predetermined error correction block encoding method; anda demodulation unit configured to perform a demodulation process on the acquired reception signal, the demodulation process corresponding to the predetermined generation process, whereinthe predetermined generation process includes:selecting one matrix from among N matrices F[i], where i is an integer no less than 0 and no more than N−1, and N is an integer 3 or greater, by hopping between the matrices over each of the plurality of slots, the N matrices F[i] defining a precoding process that is performed on a plurality of modulated signals, andgenerating the transmission signal z1 and the transmission signal z2 by performing, for each of the plurality of slots, a precoding process corresponding to the selected matrix F[i] on the first modulated signal s1 and the second modulated signal s2,the first transmission signal z1 and the second transmission signal z2 satisfy (z1, z2)T=F[i](s1, s2)T,(z1, z2)T being a transposed vector of (z1, z2), and(s1, s2)T being a transposed vector of (s1, s2),the N matrices F[i] satisfy