FIELD: radio communication.
SUBSTANCE: invention relates to a radio communication device and a method for extending a response signal. In the device, control part (209) controls both ZC sequence that is used in the primary extension in extension part (214) and the Walsh sequence that is used in the secondary extension in extension part (217) to provide the possibility for a very small cyclic interval of ZC sequence shift to absorb interference components remained in the response signal. Extension part (214) uses ZC sequence set, using control part (209), for the primary extension of the response signal. Extension part (217) uses the Walsh sequence set, using control part (209), for the secondary extension of the response signal, to which CP prefix was added.
EFFECT: minimization of division characteristic decline in multiplexing with the code seal of the response signal.
24 cl, 15 dwg
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