MIMO transmission apparatus and operating method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsByongok Lee, Joohyun Do, Hyunseok Yu
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Abstract
An operating method of a wireless communication device includes calculating an effective channel matrix between the wireless communication device and a base station based on transmission characteristic information and channel information, the transmission characteristic information corresponding to the wireless communication device, and the channel information corresponding to a channel between the wireless communication device and the base station, determining a precoding matrix based on the effective channel matrix, and determining a transmission beamforming vector based on the precoding matrix.
Claims20
An operating method of a wireless communication device, the operating method comprising:
- calculating an effective channel matrix between the wireless communication device and a base station based on transmission characteristic information and channel information, the transmission characteristic information corresponding to the wireless communication device, and the channel information corresponding to a channel between the wireless communication device and the base station;
- determining a precoding matrix based on the effective channel matrix;
- and
- determining a transmission beamforming vector based on the precoding matrix.
A wireless communication device comprising:
- processing circuitry configured to
- calculate an effective channel matrix between the wireless communication device and a base station based on transmission characteristic information and channel information, the transmission characteristic information corresponding to the wireless communication device, and the channel information corresponding to a channel between the wireless communication device and the base station,
- determine a precoding matrix based on the effective channel matrix, and
- determine a transmission beamforming vector based on the precoding matrix.
A wireless communication system comprising:
- a wireless communication device;
- and
- a base station configured to transmit a channel status information-reference signal (CSI-RS) to the wireless communication device,
- wherein the wireless communication device is configured to
- estimate an uplink channel based on the CSI-RS and channel reciprocity to obtain channel information,
- calculate an effective channel matrix between the wireless communication device and the base station based on transmission characteristic information and the channel information, the transmission characteristic information corresponding to the wireless communication device,
- determine a precoding matrix based on the effective channel matrix, and
- determine a transmission beamforming vector based on the precoding matrix.
Dependencies are inferred from the claim text.