Patent ID: 7684506

Claim:
A transmitting apparatus comprising: a baseband signal former that makes baseband signals in varying channel matrix patterns in accordance with data; a radio section that converts the baseband signals to radio signals; and a transmit antenna that transmits the radio signals, wherein: the transmit antenna comprises a plurality of antennas; the baseband signal former comprises a space-time block encoder that changes a pattern of a space-time block code in accordance with transmission data; and the space-time block encoder comprises: a first modulator that makes a first transmission symbol from the transmission data; a second modulator that makes a second transmission symbol from the transmission data; and a signal selector that receives as input the first and second transmission symbols, outputs to the plurality of antennas the first and second transmission symbols and signals representing complex conjugates of said first and second symbols, by changing an order of said first and second symbols and the complex conjugate signals in accordance with transmission data, and makes space-time block code signal.