WIRELESS COMMUNICATIONS SYSTEM, WIRELESS COMMUNICATIONS APPARATUS, WIRELESS COMMUNICATIONS METHOD AND COMPUTER PROGRAM FOR WIRELESS COMMUNICATION
First Claim
1. An electronic device comprising:
- circuitry configured toobtain first information to be referenced for determining a weight matrix;
determine a weight matrix for weighting data signals based on the obtained first information;
control transmission of training signals for channel estimation at another electronic device, the training signals for channel estimation being weighted by weights included in the weight matrix.
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Abstract
In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.
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Citations
17 Claims
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1. An electronic device comprising:
circuitry configured to obtain first information to be referenced for determining a weight matrix; determine a weight matrix for weighting data signals based on the obtained first information; control transmission of training signals for channel estimation at another electronic device, the training signals for channel estimation being weighted by weights included in the weight matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A mobile apparatus comprising:
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a plurality of antennas; and circuitry configured to obtain first information to be referenced for determining a weight matrix; determine a weight matrix for weighting data signals based on the obtained first information; control transmission of training signals for channel estimation at another electronic device, the training signals for channel estimation being weighted by weights included in the weight matrix.
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16. A method performed by an electronic device, the method comprising:
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obtaining first information to be referenced for determining a weight matrix; determining a weight matrix for weighting data signals based on the obtained first information; controlling transmission of training signals for channel estimation at another electronic device, the training signals for channel estimation being weighted by weights included in the weight matrix.
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17. A non-transitory computer-readable medium including computer program instructions, which when executed by an electronic device, cause the electronic device to:
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obtain first information to be referenced for determining a weight matrix; determine a weight matrix for weighting data signals based on the obtained first information; control transmission of training signals for channel estimation at another electronic device, the training signals for channel estimation being weighted by weights included in the weight matrix.
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Specification