| 摘要 |
<p>A radio transmission apparatus includes a plurality of transmission antennas, a start symbol unit 2 that generates a start symbol as a reference signal during the start of differential coding, a differential coding unit (a differential coding unit 3, a transmission-signal-power calculating unit 6, and a 1/square root operation unit 7) that subjects a transmission symbol, to which information bits are mapped, to differential coding and generates a symbol after differentiation, and a space-time coding unit 8 that subjects the start symbol or the symbol after differentiation to space-time coding and generates signals to be transmitted from transmission antennas. The differential coding unit determines, on the basis of electric power of the start symbol or electric power of the symbol after differentiation generated last time, electric power of the symbol after differentiation generated in the current differential coding processing.</p> |
