METHOD FOR TRANSMITTING A DATA SIGNAL IN A MIMO SYSTEM

摘要

A method operates to transmit a data signal by a transmission unit of a wireless multiple-input/multiple-output (MIMO) communication system. The communication system includes the transmission unit and a reception unit, the transmission unit having a plurality of transmission antennas and the reception unit having a plurality of reception antennas. The method includes performing a first transmission of a data signal, the first transmission including transmitting the data signal by each one of the plurality of transmission antennas, and performing a second transmission of the data signal at a time later than the first transmission, the second transmission including transmitting at least one spectrally modified signal variant of the data signal by at least one antenna of the plurality of transmission antennas.

主权项

1. A method for transmitting a data signal by a transmission unit of a wireless multiple-input/multiple-output (MIMO) communication system, the transmission unit comprising a plurality of transmission antenna ports, the method comprising:
performing a first transmission of a data signal, the first transmission comprising transmitting the data signal by each one of the plurality of transmission antenna ports; and performing a second transmission of the data signal at a time later than the first transmission, the second transmission comprising transmitting at least one spectrally modified signal variant of the data signal by at least one transmission antenna port of the plurality of transmission antenna ports, wherein transmitting at least one spectrally modified signal variant of the data signal comprises pre-coding a signal component of the data signal, the pre-coding being performed in the frequency domain by applying a frequency-dependent multiplication to the respective signal component of the data signal.