WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD

PROBLEM TO BE SOLVED: To provide a wireless communication system for a MIMO adaptive modulation scheme, which can reduce a memory capacity for storing data before demodulation and suppress a processing delay in a data channel. SOLUTION: The wireless communication system performs adaptive modulation for changing a modulation method and an encoding rate in a data channel, depending on a propagation environment, and transmits/receives a signal through MIMO multiplexing. The control information includes first control information to be used for a MIMO stream separation process and second control information not to be used for the MIMO stream separation process. The wireless communication apparatus determines the first control information at the update timing of the first control information by referring to the first control information table, determines selections of the second control information based on the determined first control information, and determines the second control information from the determined selections of the second control information at the update timing of the second control information. COPYRIGHT: (C)2010,JPO&INPIT