Radio transmission device

A radio transmission method of a radio transmitter having a plurality of transmitting antennas, comprising the steps of:

• determining a spatial multiplexing number for each block when transmitting a transmission signal blocked in time and frequency to a radio communication device as an opposite party;
• and
• allocating a transmission signal to each of said transmitting antennas based on said determined spatial multiplexing number.

A radio communication system including a radio transmitter having a plurality of transmitting antennas and a radio communication device as an opposite party of said radio transmitter, wherein

• said radio transmitter determines a spatial multiplexing number for each block and allocates a transmission signal to each of said transmitting antennas based on said determined spatial multiplexing number when transmitting a transmission signal blocked in time and frequency to said radio communication device as an opposite party, and
• said radio communication device receives a signal transmitted from said radio transmitter.

A radio communication system including a radio transmitter having a plurality of transmitting antennas and a radio communication device as an opposite party of said radio transmitter, wherein

• said radio communication device transmits information about a spatial multiplexing number for each block blocked in time and frequency to said radio transmitter, and
• said radio transmitter determines a spatial multiplexing number based on said received information about a spatial multiplexing number for each of said blocks and allocates a transmission signal to each of said transmitting antennas based on said determined spatial multiplexing number.