Patent
Method for operating multi input multi output based on multimode codebook, transmitting and receiving apparatus for supporting that method
Li Jianjun,Li Zheng Zi,Lee Dong Jun,Kim Jae Hyeong +3 more
- 14 Jan 2010
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TL;DR: In this article, a method for operating multi input multi output based on a multimode codebook, and a transmitting and receiving apparatus for supporting the method are provided to use codebooks with different sizes according to various MIMO mode types.
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Abstract: PURPOSE: A method for operating multi input multi output based on a multimode codebook, and a transmitting and receiving apparatus for supporting the method are provided to use codebooks with different sizes according to various MIMO mode types, thereby reducing complexity according to index search. CONSTITUTION: A codebook determiner(410) decides one between the first and second codebooks according to a MIMO mode type of the entire system. A channel estimator(420) analyzes a channel characteristic from a transmitted signal. The channel estimator generates channel state information. A precoding matrix selector(430) selects a precoding matrix based on the channel state information.
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Citations
Patent
Precoding-related signal transmitting or receiving method and apparatus
Yu Hyoung Youl,Kim Youn Sun,Hyojin Lee,Ji Hyoung Ju +3 more
- 16 Apr 2014
TL;DR: In this article, a precoding-related information transmitting or receiving method and apparatus is described. But the precoding related information can be effectively transmitted or received, according to an embodiment of the present specification.
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Patent
Method and apparatus for transmitting and receiving signal relating precoding
Yu Hyoung Youl,Kim Youn Sun,Hyojin Lee,Ji Hyoung Ju +3 more
- 24 Oct 2014
TL;DR: In this article, a precoding related information receiving method of a user device according to an embodiment of the present specification comprises the steps of transmitting a non-periodic channel state information (CSI) report; receiving a rank indicator and a first precoder indicator from a base station; acquiring a second precoder signal indicator included in the latest nonperiodic CSI report corresponding to the rank indicator among the non-stationary CSI report transmitted by the user device; and receiving a signal using the first signal indicator and the second signal indicator.
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