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Constellation rotation angle determination method and device of pattern division multiple access system

A rotation angle and graph division multiple access technology, applied in the field of communication, can solve problems such as low system work efficiency, achieve the effect of improving work efficiency and avoiding a lot of time consumption

Active Publication Date: 2018-09-07
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for determining the constellation rotation angle of a graph division multiple access system, so as to solve the problem of low system efficiency when determining the constellation rotation angle for multi-user unified search

Method used

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  • Constellation rotation angle determination method and device of pattern division multiple access system
  • Constellation rotation angle determination method and device of pattern division multiple access system
  • Constellation rotation angle determination method and device of pattern division multiple access system

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no. 1 example

[0057] Aiming at the problem of low system work efficiency when multi-users determine the constellation rotation angle through unified search in the existing PDMA system, the present invention provides a method for determining the constellation rotation angle of the picture division multiple access system, through more Fast search improves system efficiency.

[0058] Such as image 3 As shown, the method for determining the constellation rotation angle of the GDMA system in the first embodiment of the present invention includes:

[0059] Step 301, sequentially selecting one UE among a plurality of user equipment UEs as a target UE;

[0060] Step 302, according to the current first constellation rotation angle of each UE among the plurality of UEs, obtain the second constellation rotation angle of the target UE when the mutual information value is maximum;

[0061] Step 303, after obtaining the second constellation rotation angle of each of the plurality of UEs, according to ...

no. 2 example

[0133] Such as Figure 8 As shown, the second embodiment of the present invention provides an apparatus 800 for determining a constellation rotation angle of a graph division multiple access system, including:

[0134] A selection module 801, configured to sequentially select one UE among a plurality of user equipment UEs as a target UE;

[0135] The first processing module 802 is configured to obtain, according to the current first constellation rotation angle of each of the multiple UEs, the second constellation rotation angle of the target UE when the mutual information value is maximum;

[0136] The second processing module 803 is configured to obtain the second constellation rotation angle of each UE in the plurality of UEs, according to each UE using its own second constellation rotation angle and the overlapping point in the constellation Quantity, judging whether the number of overlapping points is less than or equal to a preset number value, if the number of overlapp...

no. 3 example

[0155] In order to better achieve the above purpose, such as Figure 9 As shown, the third embodiment of the present invention also provides a GDMA system, which includes: a processor 900; a memory 920 connected to the processor 900 through a bus interface , and a transceiver 910 connected to the processor 900 through a bus interface; the memory 920 can store data used by the processor 900 when performing operations;

[0156] When the processor invokes and executes the programs and data stored in the memory, the following functions are realized: the processor 900 is configured to sequentially select one of the multiple user equipment UEs as the target UE; according to multiple UEs the current first constellation rotation angle of each UE among the UEs, and obtain the second constellation rotation angle of the target UE when the mutual information value is maximum; after obtaining the second constellation rotation angle of each UE in the plurality of UEs, according to Each UE ...

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Abstract

The invention provides a constellation rotation angle determination method and device of a pattern division multiple access system. The method comprises the following steps: sequentially selecting oneof multiple user equipment as target UE; according to the current first constellation rotation angle of each UE in the multiple UE, acquiring a second constellation rotation angle of the target UE when the mutual information value is the maximum; after the second constellation rotation angle of each UE in the multiple UE is obtained, according to the number of overlapping points in the constellation obtained by utilizing the respective second constellation rotation angle via each UE, judging whether the number of the overlapping points is smaller than or equal to a preset number value; if thenumber of the overlapping points is smaller than or equal to the preset number value, determining the second constellation rotation angle as the target constellation rotation angle; if the number ofthe overlapping points is larger than the preset number value, returning the step of sequentially selecting one UE in the multiple user equipment as the target UE. According to the scheme, the problemthat the working efficiency of the system is low when the constellation rotation angle is determined according to multi-user unified search is solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining a constellation rotation angle of a graph division multiple access system. Background technique [0002] Picture division multiple access (Pattern Division Multiple Access, PDMA) technology is an important multiple access innovation technology in the 5th generation mobile communication, which significantly improves the spectrum efficiency of the wireless communication system, and is increasingly receiving attention in the field of communication technology. Pay attention to. Such as figure 1 with figure 2 The system factor diagrams of PDMA uplink multiple access systems with 3 users superimposed on 2 resource blocks and 6 users superimposed on 3 resource blocks are given respectively. In the PDMA system, the data of different users are mapped into different codewords through constellation modulation, and multiple users are sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/34H04W16/14
CPCH04L27/3444H04W16/14
Inventor 贺志强黄风云司中威康绍莉任斌孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD