DATA TRANSMISSION METHOD AND APPARATUS IN MULTIPLE ANTENNA SYSTEM
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Abstract
A data transmission method in a multiple antenna system is provided. The method includes: defining a codebook including at least one precoding matrix composed of a plurality of rows and columns, wherein the codebook is at least one of a first type in which all elements of the precoding matrix are non-zero elements, a second type in which any one column of the precoding matrix includes non-zero element and the remaining columns include at least one zero element, and a third type in which all columns of the precoding matrix include at least one zero element; precoding an input symbol by using the defined codebook; and transmitting the precoded symbol.
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Citations
27 Claims
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1-11. -11. (canceled)
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12. A method for transmitting a signal in a multiple antenna system, the method performed at a transmitter and comprising:
pre-coding the signal based on a codebook, the codebook comprising pre-coding matrices, the pre-coding matrices including - View Dependent Claims (13, 14, 15, 16, 17)
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18. A user equipment comprising:
a pre-coder for pre-coding a signal based on a codebook, the codebook comprising pre-coding matrices, the pre-coding matrices including - View Dependent Claims (19, 20, 21, 22)
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23. A method for transmitting a signal in a multiple antenna system, the method performed at a transmitter and comprising:
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pre-coding the signal based on a codebook comprising pre-coding matrices, each pre-coding matrix containing a first column including two nonzero elements, a second column including one nonzero element, and a third column including one nonzero element; and transmitting the pre-coded signal using a radio resource, wherein the codebook is a 4-Tx rank 3 codebook, the nonzero elements of the first column are selected from orthogonal vector sets, and each row vector of the pre-coding matrices contains one nonzero element and two zero elements. - View Dependent Claims (24, 25, 26, 27)
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Specification