Patent ID: 8422533
Filing Date: 2013-04-16
Classification: H04J,H04L,H04W

Abstract:
1. A radio communication apparatus comprising: a spreading section configured to multiply an ACK or NACK symbol with an orthogonal sequence, which is one of plural orthogonal sequences, and with a sequence defined by a cyclic shift value, which is one of plural cyclic shift values and which is associated with the orthogonal sequence; a scrambling section configured to scramble the ACK or NACK symbol by 1 or e a transmitting section configured to transmit the ACK or NACK symbol that is multiplied and scrambled, wherein said scrambling section scrambles the ACK or NACK symbol by 1 when a cyclic shift value that defines the sequence, with which the ACK or NACK symbol is multiplied, is one of two cyclic shift values that are associated with one of the plural orthogonal sequences and that are next to each other at a set interval, and scrambles the ACK or NACK symbol by e