| 摘要 |
<p>As the ICI level increases, a spreading ratio decision section (104) sets a higher spreading ratio M of the spreading code generated by a first spreading code generator (102). That is, the spreading ratio decision section (104) sets a higher spreading ration M in the frequency direction as orthogonal deterioration between sub-carriers increases in the frequency direction. Moreover, as the ISI level increases, the spreading ratio decision section (104) sets a higher spreading ratio L of the spreading code generated by a second spreading code generator (103). That is, the spreading ratio decision section (104) sets a higher spreading ratio L in the time direction as orthogonal deterioration between sub-carriers increases in the time direction.</p> |
