| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: invention discloses a radio communication device which includes a scrambling unit (214) which multiplies a response signal after modulation, by a scrambling code "1" or "e" so as to rotate a constellation for each of the response signals on a cyclic shift axis; a spread unit (215) which performs a primary spread of the response signal by using a ZAC sequence set by a control unit (209); and a spread unit (218) which performs a secondary spread of the response signal after being subjected to the primary spread, by using a block-wise spread code sequence set by the control unit (209).EFFECT: providing ACK reception quality and NACK reception quality equal to each other.42 cl, 23 dwg |
