OFDM TRANSMITTER, OFDM RECEIVER, BASE STATION DEVICE, MOBILE STATION APPARATUS, OFDM COMMUNICATIONS SYSTEM, AND CELL SEARCH METHOD

摘要

PPROBLEM TO BE SOLVED: To perform a synchronization channel with little system overhead and high detection characteristics, and cell search by using it, when a GCL sequence is mapped to a reference signal sequence. PSOLUTION: An OFDM transmitter 10 which transmits a radio signal by an OFDM method comprises: a control signal generating part 12 for generating a synchronous channel signal including at least a reference signal used for propagation path presumption, a scrambling code signal and a group scrambling index, and/or a cell peculiar information index (cell composition ID); and a channel mapping part 13 for carrying out the multiplication of the scrambling code to an OFDM signal, while mapping the reference signal and a synchronous channel signal on a predetermined subcarrier. PCOPYRIGHT: (C)2008,JPO&INPIT