Patent ID: 8488701

Claim:
A base station, comprising: a signal generator configured to: select a transmission mode from a plurality of transmission modes; in at least a case of selection of a first transmission mode and a case of selection of a second transmission mode: attach a first Cyclic Redundancy Check (CRC) to a first code word; and attach a second CRC to a second code word; in the case of selection of the first transmission mode, generate a first signal of the first transmission mode from the first code word with the first CRC attached thereto and a second signal of the first transmission mode from the second code word with the second CRC attached thereto; and in the case of selection of the second transmission mode, generate a first signal and a second signal of the second transmission mode from the first code word with the first CRC attached thereto and a third signal of the second transmission mode from the second code word with the second CRC attached thereto; and a transmitter configured to spatially multiplex the signals generated by the signal generator in a selected transmission mode.