TRANSMITTER APPARATUS AND RADIO COMMUNICATION METHOD

摘要

A radio station (101) equipped with an array antenna, when transmitting an information symbol sequence to a particular radio station (102), uses a plurality of vectors, which are produced based on a propagation channel characteristic (103) established between these ratio stations, to simultaneously transmit a plurality of symbol sequences, which include the aforementioned information symbol sequence, by means of vector multiplexing, thereby causing the particular radio station (102) to receive the aforementioned information symbol sequence, while causing other radio stations (200) of different propagation channels to simultaneously receive a part or all of the aforementioned plurality of symbol sequences. Thus, when data is transmitted to a particular radio station via a radio communication line, the concealment of information can be secured with a high level of security.