Pre-coding method, the pre-coding apparatus

Predetermined to generate a first encoded block and the second coded block using the error correction block coding scheme, a first baseband signal s1 generated from the first encoded block, the first against a second baseband signal s2 generated from the second coded block, it performs precoding processing according to F [i] said selected first precoded signal z1 second of generating a precoded signal z2, the first pre-coded signal z1 and the second precoded signal z2 is, (z1, z2) T = F [i] (s1, s2) met T, the first average power of precoded signal z1 is the second to be smaller than the average power of the precoded signal z2, the first Purikode Packaging has been both signals z1 and the second precoded signal z2 or one of precoding method for changing the power.