Apparatus and method for transmitting signal in mobile communication system
AssigneeLG Electronics Inc.
InventorDong Hi Sim
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Abstract
A signal transmission apparatus and method for a mobile communication system are disclosed. Beamforming is performed on each symbol using the correlation as well as the independence between antennas, and then the beamformed symbols are transmitted. Thus, both the correlation between antennas and the independence between antennas are all considered, so that the gain according to the correlation between antennas can be also obtained. In addition, the additional gain would lead to enhancement of the symbol detection capability of the sending end, so that performance of the MIMO system can be remarkably heightened.
Claims11
A signal transmission method for a mobile communication system using multiple antennas comprising:
- receiving a channel matrix from a receiving end;
- eigen-decomposing the channel matrix and calculating an eigenvector and an eigenvalue;
- performing a beamforming on a symbol, the beamforming being performed by multiplying each symbol by the eigenvector, a power level of each symbol being adjusted in proportion to the calculated eigenvalue;
- and
- transmitting the beamformed signal through a plurality of transmit antennas.
A signal transmission method for a mobile communication system using multiple antennas comprising:
- receiving an eigenvector and an eigenvalue from a decomposition unit at a receiving end;
- performing a beamforming by multiplying each symbol by the eigenvector, a power level of each symbol being adjusted in proportion to the received eigenvalue;
- and
- transmitting the beamformed signal through each transmit antenna.
A signal transmission apparatus for a mobile communication system using multiple antennas comprising:
- a demultiplexer for demultiplexing sequentially inputted symbols;
- an eigen decomposition unit for producing an eigenvector and an eigenvalue;
- a beamforming unit for performing a beamforming on each demultiplexed symbol, the beamforming being performed by multiplying each symbol to be transmitted by the eigenvector, the beamforming unit adjusting a power level of each symbol in proportion to the eigenvalue;
- and
- a plurality of transmit antennas for transmitting the beamformed signals.
A signal transmission apparatus for a mobile communication system using multiple antennas comprising:
- a demultiplexer, the demultiplexer demultiplexing sequentially inputted symbols;
- an eigen decomposition unit, the eigen decomposition unit eigen-decomposing a channel matrix fed back from a receiving end and calculating an eigenvector and an eigenvalue;
- a beamforming unit, the beamforming unit performing a beamforming on each symbol by using the calculated eigenvector, the beamforming unit adjusting a power level of each symbol in proportion to the eigenvalue;
- and
- a plurality of transmit antennas for transmitting beamformed signals.
Dependencies are inferred from the claim text.