Method and apparatus for mapping codeword current to layer in multi-input multi-output system

A mapping method and multi-output technology, applied in diversity/multi-antenna systems, space transmit diversity, prevention/detection of errors through diversity reception, etc., can solve problems such as no solution

Active Publication Date: 2009-06-24
ZTE CORP
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Problems solved by technology

[0013] In the LTE-Advanced demand research report TR 36.814 V0.1.1 proposed in September 2008, it has been clarified that the LTE-Advanced downlink spatial multiplexing

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  • Method and apparatus for mapping codeword current to layer in multi-input multi-output system
  • Method and apparatus for mapping codeword current to layer in multi-input multi-output system
  • Method and apparatus for mapping codeword current to layer in multi-input multi-output system

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Embodiment Construction

[0075] The basic idea of ​​the present invention is: by setting a multiplexing mapping mode supporting up to eight layers, the support for MIMO services in the LTE-Advanced system is well realized. The invention is simple to realize, and the mapping mode of code word stream mapping to layer is more reasonable.

[0076] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0077] figure 1 It is a flowchart of a mapping method from a codeword stream to a layer in a multiple-input multiple-output system according to an embodiment of the present invention, such as figure 1 As shown, the method for mapping codeword streams to layers in the MIMO system of this embodiment includes the following steps:

[0078] Step 101: Group the current layers in the MIMO system according to the current number of code...

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Abstract

The invention discloses is a mapping method of codeword flow-to-layer in MIMO system, which includes that the current layer of a MIMO system is divided into groups according to current number of codeword flow, and each codeword flow is mapped to the layer of a corresponding group. The invention also discloses a mapping device of codeword flow-to-layer in MIMO system, which comprises a layer grouping unit and a mapping unit; wherein, the layer grouping unit is used for dividing current layer of a MIMO system into groups according to the number of current codeword flow; the mapping unit is used for mapping each codeword flow to the layer of a corresponding group. The invention has simple implementation and more reasonable codeword flow-to-layer mapping mode.

Description

technical field [0001] The invention relates to a method and device for mapping a code word stream (Code Word Spatial) to a layer (Layer) in a multiple-input multiple-output (MIMO, Multi-Input Mult-Output) system. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system, the downlink can support up to 2 code word stream multiplexing (Code Word Spatial Multiplexing), and can support up to 4 antenna ports (AntennaPort), and the corresponding layers can be 1, 2, 3, 4. After each codeword stream is modulated, the codeword number is mapped to one or more layers in the following manner: [0003] The modulated symbol of the q code word stream is Indicates the number of modulation codeword symbols on the q codeword stream; the codeword symbols mapped to the υ layer are Indicates the number of modulation codeword symbols on each layer. In this application document, the same characters have the same meaning. [0004] For single-antenna port ...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04B7/08
CPCH04L1/06H04B7/04
Inventor 戴博郁光辉于辉陈艺戬
Owner ZTE CORP
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