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

摘要

Provided is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals to be transmitted over the same frequency bandwidth at the same time, including the steps of selecting a matrix F[i] from among N matrices, which define precoding performed on the plurality of baseband signals, while switching between the N matrices, i being an integer from 0 to N−1, and N being an integer at least two, generating a first precoded signal z1 and a second precoded signal z2, generating a first encoded block and a second encoded block using a predetermined error correction block encoding method, generating a baseband signal with M symbols from the first encoded block and a baseband signal with M symbols the second encoded block, and precoding a combination of the generated baseband signals to generate a precoded signal having M slots.

主权项

1. A phase weight altering method comprising the steps of:
encoding a first plurality of bits to a first encoded block and a second encoded block by using a predetermined error correction block encoding method; mapping the first encoded block to a first baseband signal s1 with M symbols and the second encoded block to a second baseband signal s2 with M symbols, M being an integer that is at least two; selecting a matrix F[i] from among N matrices while switching between the N matrices, the N matrices defining phase weight altering performed on the plurality of baseband signals, i being an integer variable from 0 to (K−1), K being an integer that is at least two and less than N, and N being an integer that is at least three; and generating a first phase weight altered signal z1 and a second phase weight altered signal z2 by phase weight altering, in accordance with the selected matrix F[i], the first baseband signal s1 and the second baseband signal s2 to be transmitted over the same frequency bandwidth at the same time, wherein the first phase weight altered signal z1 and the second phase weight altered signal z2 satisfying the equation (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).