Patent
Pre-code achieving method, pre-code achieving device and multiple input multiple output (MIMO) system
Lu Xin,Wang Jianhua,Wang Wenli +2 more
- 19 Jun 2013
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TL;DR: In this article, a pre-code achieving device and a multiple input multiple output (MIMO) system is proposed for the technical field of communication and provides a precode achieving method.
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Abstract: The invention is suitable for the technical field of communication and provides a pre-code achieving method, a pre-code achieving device and a multiple input multiple output (MIMO) system. The pre-code achieving method comprises the steps of receiving channel state information sent by multiple user devices; selecting a preset number of user devices from users for being paired to perform user pairing of multiple-user MIMO; selecting actual pre-code type according to a preset strategy, performing pre-code treatment to data of the selected multiple user devices according to the pre-code type to produce pre-code words of the multiple-user MIMO; broadcasting the preset number of pre-code words of the multiple-user MIMO and demodulation reference signals corresponding to the pre-code words of the multiple-user MIMO to the multiple user devices. On the one hand, the performance of the multiple-user MIMO or cooperative multiple-point transmission COMP is improved; on the other hand, a pre-code achieving system easily achieves user MIMO or the cooperative multiple-point transmission COMP.
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Citations
Patent
Data transmission method and apparatus
Yingpei Lin,Jiayin Zhang,Yi Luo +2 more
- 18 Dec 2015
TL;DR: In this paper, a first access point determines a current working uplink receiving beam, and broadcasts an identifier of the current working UL receiving beam of the first access node, so that when a second access node associated with the first node determines, according to the identifier, that a first transmitting beam at which the first station is currently working is the current LR of the second node.
28
Patent
Pre-coding method, device and system
Li Qiaojie,Wang Xiang,Zhou Bin +2 more
- 31 May 2017
TL;DR: In this paper, the authors proposed a pre-coding method, device and system for each sub-carrier with respect to each subcarrier, acquiring a channel matrix on the subcarriers, the channel matrix consisting of channel vectors of all the users on the subsets, and the users comprising linear users and non-linear users.
4
Patent
Communication method and device for nonlinear precoding
Nuan Song,Huan Sun,Tao Yang +2 more
- 17 Aug 2018
TL;DR: In this article, a communication method and a device for nonlinear precoding is described, where the first message indicates a first precoding type of a terminal device, and the second message indicates whether the first and second precoding types are the same.
3
Patent
Wireless communication method for reporting mu-cqi offset, user equipment and enode b
Masayuki Hoshino,Wang Lilei +1 more
- 29 Jul 2013
TL;DR: In this paper, the authors present a multi-user multi-input-multiple-output (MU-MIMO) communication method based on multiple-input multi-output and a corresponding user equipment and eNode B. According to the present disclosure, a first MU-CQI offset corresponding to a first co-scheduled PMI which is fully orthogonal with a desired PMI is reported with a larger number of bits than a second CQI off-set corresponding to another PMI that is not orthogonality with the desired one.
3
Patent
Precoding method and apparatus
Wei Ning,Xiao Hongjie,Gu Zheqi,Tian Yuan,Yi Xiongshu +4 more
- 22 Feb 2017
TL;DR: In this paper, the authors proposed a precoding method and apparatus for a plurality of terminals, where a base station obtains the channel state information at transmitters (CSIT) of the terminals, and the base station determines the CSIT quality of each terminal in the plurality of users, and classifies the terminals into a first terminal set and a second terminal set based on each of the users' quality.
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Patent
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Neelesh B. Mehta,Hongyuan Zhang,Andreas F. Molisch,Jinyun Zhang +3 more
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TL;DR: In this article, the authors proposed a method to transmit and receive signals in a cooperative multi-user, multi-input, mult-output (MIMO) network, where the first signals are transmitted synchronously from the first BS and the second BS to a first MS, and in the second signals are asynchronous with respect each other.
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Patent
User selecting method of multi-user MIMO communication system based on codebook
Hang Juan,She Feng +1 more
- 27 Feb 2013
24
Patent
Downlink transmission method and base station used in multiple input multiple output system
Bin Li,李斌,Jinfeng Yan,闫金凤,Chenhong Lu,路陈红 +5 more
- 01 Nov 2010
TL;DR: In this article, a downlink transmission method and base station used in a multiple input multiple output (MIMO) system is presented, where the method including: the base station, by using a Channel Quality Indicator (CQI), rank indicator (RI), and preceding matrix indicator (PMI) reported by a user equipment (UE) in a time window, selects a down-link MIMO mode from the downlink transmissions modes which the UE is presently in, and the BS transmits data to the UE by using the selected downlink M
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Patent
Linear pre-coding method for multi-input and multi-output system
Chen He,Xiaolin Che,Lingge Jiang +2 more
- 05 Jan 2011
TL;DR: In this paper, a linear predictive coding method of a multi-user, multi-input multi-output system was proposed, where the receiver of each user was simplified to a product of a receiver constant and a normalized receiver having module 1, based on minimum mean-square error method.
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