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Multi-input multi-output system based on antenna selection and signal processing method thereof

An antenna selection and multi-input technology, applied in the field of communication, can solve the problems that the UCD method is difficult to use directly in a multi-user MIMO system, and achieve the effects of fast calculation, elimination of interference between users, and optimized performance

Inactive Publication Date: 2009-03-04
ZTE CORP
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a multiple-input multiple-output system based on antenna selection and its signal processing method, to solve the problem that the UCD method is difficult to be directly used in a multi-user MIMO system, thereby optimizing the performance of the multi-user MIMO system

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  • Multi-input multi-output system based on antenna selection and signal processing method thereof

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Embodiment Construction

[0035] The invention cooperates the block diagonalization processing module and the receiving antenna selection module with the unified channel decomposition module, so that the UCD decomposition method can be used in the multi-user MIMO system, and the performance of the system is optimized.

[0036] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] refer to figure 1 As shown, it is a schematic structural diagram of the MIMO system based on antenna selection in the present invention.

[0038] Taking a two-user MIMO system as an example, two users are identified as user 1 and user 2 . The system includes a transmitting end, a receiving end and feedback paths 122.1 and 122.2, and the data of user 1 and user 2 are respectively processed at the transmitting end and receiving end. The transmitter includes: information source modules 110.1, 110.2, modulation modules 111.1, 111.2, primary precod...

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Abstract

The invention discloses a multi-input and multi-output system based on antenna selection, and a signal processing method thereof, a system transmitting terminal comprises a block diagonalization module, a first-time precoding module, a second-time precoding module and a unified channel decomposing module; a receiving terminal comprises an antenna selection module, the block diagonalization module is used for decomposing out a single user channel matrix and a diagonalization precoding matrix according to the fedback channel information; the unified channel decomposing module is used for decomposing out the precoding matrix of a single user according to the single user channel matrix; the first-time precoding module is used for carrying out precoding to the user information according to the precoding matrix of the single user; the second-time precoding module is used for carrying out second-time precoding to the user information according to the diagonalization precoding matrix; the antenna selection module is used for carrying out antenna selection according to the channel information obtained form a channel estimation module and outputting the selection result to a detection module. The invention optimizes the performance of the multi-user multi-input and multi-output system.

Description

technical field [0001] The present invention relates to multiple-input multiple-output (MIMO) system technology in the communication field, and in particular to a multiple-input multiple-output system based on antenna selection and a signal processing method thereof. Background technique [0002] With the rapid development of wireless communication, people have higher and higher requirements on the type and quality of wireless communication services. One of the ways to improve the communication rate and reliability under the current spectrum resources is to use multiple transmitting and multiple receiving antennas, that is, a multiple-input multiple-output communication system. [0003] In a multi-user MIMO system, using space-time processing technology, multiple users can occupy the same time and frequency resources without spread spectrum processing, and only use the difference in spatial channels to suppress interference and restore signals. Compared with traditional mul...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06H04B7/08H04L1/06H04L25/02
Inventor 王衍文段亚军孙云锋赵琼
Owner ZTE CORP
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