RADIO COMMUNICATION DEVICE AND CONSTELLATION CONTROL METHOD Russian patent published in 2013 - IPC H04J11/00 

FIELD: information technology.

SUBSTANCE: invention discloses a device having a scrambling unit (214) which multiplies a response signal after modulation, by a scrambling code "1" or "e^-j(π/2)" so as to inverse a constellation for each of the response signals on a cyclic shift axis; a spectrum spread unit (215) which performs a primary spectrum spread of the response signal by using a ZAC sequence set by a control unit (209); and a spectrum spread unit (218) which performs a secondary spectrum spread of the response signal after subjected to the primary spectrum spread, by using a block-wise spectrum spread code sequence set by the control unit (209).

EFFECT: providing the same quality of receiving ACK and NACK; controlling transmission power based on the quality of transmitting user equipment identification information.

35 cl, 23 dwg