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Transmitter based on precoding, transmitting method and data transmission system

A precoding and transmitter technology applied in the communication field to achieve the effect of ensuring the accuracy of noise estimation and reducing the complexity of noise estimation

Inactive Publication Date: 2012-12-19
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the traditional precoding technology only uses the effective space sub-channel to transmit data

Method used

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  • Transmitter based on precoding, transmitting method and data transmission system
  • Transmitter based on precoding, transmitting method and data transmission system
  • Transmitter based on precoding, transmitting method and data transmission system

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] figure 1 is a block diagram of a precoding based transmitter according to the first embodiment of the present invention. Such as figure 1 As shown, the precoding-based transmitter according to the embodiment of the present invention includes: an information acquisition module 102, which is used to obtain the number of effective spatial sub-channels N and a unitary matrix V through channel mutuality; a preprocessing module 104, which is used to utilize the entire The unitary matrix V and the number of effective space sub-channels N precode the data to be sent; and the data sending module 106 is used to send the precoded data to the receiver.

[0021] Wherein, the precoding performed by the preprocessing module 104 includes the following processing: the preprocessing module uses the first N columns of the unitary matrix V t...

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Abstract

The invention provides a transmitter based on precoding, a method for transmitting based on precoding and a data transmission system based on precoding, wherein, the method for transmitting based on the precoding of one aspect of the invention comprises: S202 which obtains an effective space sub-channel amount N and a unitary matrix V through the channel heterogeneousness, S204 which utilizes thewhole unitary matrix V and the effective space sub-channel amount N to precode the data needed to be sent, and a step S206 which sends data after the precoding. By adopting the invention, on the basis of the traditional precoding, the noise statistical characteristic of a non effective space sub-channel is utilized to estimate system noise and be used for interference cancellation, thereby the noise estimation complexity of a receiver is lowered, and the noise estimation accuracy of the receiver is ensured as much as possible.

Description

technical field [0001] The present invention relates to the communication field, in particular to a precoding-based transmitter, a precoding-based transmitting method, and a precoding-based data transmission system. Background technique [0002] In the traditional non-codebook-based precoding method, the channel matrix is ​​generally subjected to singular value decomposition (SVD decomposition) to obtain the left characteristic unitary matrix U, the right characteristic unitary matrix V, and the diagonal matrix D. According to the dimensions of the diagonal matrix D and certain link parameter criteria, the effective spatial sub-channels are determined. Using the columns of the unitary matrix V as a precoding matrix, the data is mapped to effective spatial sub-channels. Then through the channel, the corresponding column of the unitary matrix U is used as the deprecoding matrix at the receiving end to deprecode. It can be seen that the traditional precoding technology only u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
Inventor 李岩王衍文郝东来韦辉
Owner ZTE CORP
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