COMMUNICATION APPARATUS, SEQUENTIAL RECEPTION METHOD AND INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To reduce inter-cell interference among reference signals when ZC sequence is used as a reference signals in a mobile communication system.SOLUTION: R×M sequences, which are identified by a ZC sequence number r (r=1 to R) and a cyclic shift sequence number m (m=1 to M), are sorted into plural sequence groups X (X=1 to R) according to the transmission bandwidth of the reference signals. The ZC sequences are allotted to the respective cells as sequence group unit. Assuming that R=9 and M=6, the number of sequences is 54; the respective sequence groups include two sequences resulting in 27 sequence groups. 27 sequence groups are allotted to the respective cells.