Apparatus and method for data transmission/reception using channel state information in wireless communication system
First Claim
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1. A method for transmitting and receiving data according to a channel state in a wireless communication system, the method comprising the steps of:
- measuring a characteristic of transmission channels used for data transmission and transmitting channel state information of the measured channel characteristic; and
selecting sub-channels for data transmission according to the channel state information, and transmitting data through the selected sub-channels.
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Abstract
Disclosed is a method for transmitting and receiving data according to a channel state in a wireless communication system, the method includes measuring a characteristic of transmission channels used for data transmission and transmitting channel state information of the measured channel characteristic; and selecting sub-channels for data transmission according to the channel state information, and transmitting data through the selected sub-channels.
36 Citations
32 Claims
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1. A method for transmitting and receiving data according to a channel state in a wireless communication system, the method comprising the steps of:
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measuring a characteristic of transmission channels used for data transmission and transmitting channel state information of the measured channel characteristic; and
selecting sub-channels for data transmission according to the channel state information, and transmitting data through the selected sub-channels. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for allocating bits to sub-channels for data transmission in a wireless communication system, the method comprising the steps of:
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setting the number of bits allocated to all sub-channels to an initial value and calculating the number of sub-channels required for bit allocation;
determining an encoding detection sequence for each subcarrier in a state in which the initial value is set, and calculating a weight vector for all subcarriers according to the encoding detection sequence;
determining a sub-channel with the least 2-Norm value from among all sub-channels by using the calculated weight vector, and selecting the sub-channel as a sub-channel with the least 2-Norm value for bit allocation; and
allocating K bits to all of the selected sub-channels. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for transmitting and receiving data according to a channel state in a wireless communication system, the apparatus comprising:
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a reception apparatus for measuring a characteristic of transmission channels used for data transmission and feedbacking channel state information of the measured channel characteristic; and
a transmission apparatus for selecting sub-channels for data transmission according to the channel state information feedback from the reception apparatus, and transmitting data through the selected sub-channels. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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- 24. An apparatus for allocating bits to sub-channels for data transmission in a wireless communication system, wherein the apparatus sets the numbers of bits allocated to all sub-channels to an initial value, calculates the number of sub-channels required for bit allocation, determines an encoding detection sequence for each subcarrier in a state in which the initial value is set, calculates a weight vector for all subcarriers according to the determined encoding detection sequence, determines a sub-channel with the least 2-Norm value from among all sub-channels by using the calculated weight vector, selects the sub-channel with the least 2-Norm value as a sub-channel for bit allocation, and allocates K bits to all of the selected sub-channels.
Specification