Patent ID: 7852903

Claim:
A wireless transmission apparatus comprising: a modulation section that modulates data to generate a modulation symbol comprised of an in-phase component and a quadrature component; an arrangement section that arranges a spreading chip of the in-phase component and a spreading chip of the quadrature component obtained by spreading the modulation symbol in regions extending in spreading domains set for the in-phase component and the quadrature component individually; and a combining section that combines the arranged spreading chip of the in-phase component and the arranged spreading chip of the quadrature component wherein: the arrangement section comprises a spreading domain setting section that individually and variably sets the spreading domain of the spreading chip of the in-phase component and the spreading domain of the spreading chip of the quadrature component; the spreading domain setting section sets the spreading domain of the spreading chip of the in-phase component to one of a time domain and a frequency domain, sets the spreading domain of the spreading chip of the quadrature component to one of the time domain and the frequency domain, and changes the set domain of the time domain or the frequency domain in accordance with a transmission data parameter.