FIELD: radio engineering, communication.
SUBSTANCE: wireless communication device minimises the degradation in separation characteristic of a code division multiplexed response signal. In this device, a control part controls both a ZC sequence used in primary spreading in a spreading part and a Walsh sequence used in secondary spreading in a spreading part so as to allow a very small circular shift interval of the ZC sequence to absorb interference components remaining in the response signal; the spreading part uses the ZC sequence set by the control part for primary spreading of the response signal; and the spreading part uses the Walsh sequence set by the control part (209) for secondary spreading of the response signal to which CP has been added.
EFFECT: high noise-immunity of transmitted information.
20 cl, 15 dwg
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