| 主权项 |
1. A signal processing method for processing a plurality of precoded signals that are transmitted in the same frequency bandwidth at the same time, wherein
the precoded signals are generated by selecting one matrix from among N matrices F[i] by regularly hopping between the N matrices F[i], and by multiplying the selected matrix by two baseband signals that are represented by in-phase components and quadrature components, where N is an integer 1 or greater, and i is an integer from 0 to N−1, the N matrices F[i] are two-by-two matrices that satisfy a first condition and a second condition, the first condition is that x is an integer from 0 to N−1, y is an integer from 0 to N−1, and with respect to all x and all y satisfying x≠y, F[x]≠F[y] holds, the second condition is that x is an integer from 0 to N−1, y is an integer from 0 to N−1, and with respect to all x and all y satisfying x≠y, no real or complex number k holding F[x]=k×F[y] exists, the signal processing method comprising: acquiring a reception signal based on the precoded signals; demodulating the reception signal in accordance with a transmission scheme of the precoded signals; performing error-correction decoding on the demodulated signal; and acquiring audio data from the error-correction decoded signal, and externally outputting the audio data. |
