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Sparse code multiple access system and multi-user detection method

A sparse code multiple access and multi-user detection technology, applied in the sparse code multiple access system and the multi-user detection field, can solve the problem of high complexity of the multi-user detection method, and achieve the effect of low-complexity detection

Active Publication Date: 2020-07-28
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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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 overcome the shortcomings and deficiencies of the prior art, and provide a sparse code multiple access system and its multi-user detection method to solve the problem of high complexity of the multi-user detection method based on the message passing algorithm

Method used

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  • Sparse code multiple access system and multi-user detection method
  • Sparse code multiple access system and multi-user detection method
  • Sparse code multiple access system and multi-user detection method

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Embodiment Construction

[0041] Describe in detail below in conjunction with accompanying drawing and embodiment:

[0042] 1. System

[0043] 1. Overall

[0044] like figure 1 , the system includes wireless channel 000;

[0045] A mobile user terminal 100 and a base station 200 are provided;

[0046] The mobile user terminal 100 includes a first user terminal 110, a second user terminal 120...the nth user terminal 1n0 with the same structure and function, where n is a natural number, 1≤n≤1024;

[0047] Its connection relationship is:

[0048] The mobile user terminal 100, the wireless channel 000 and the base station 200 are connected in sequence to realize the multi-user detection function of the sparse code multiple access system.

[0049] 2. Function block

[0050] 0. Wireless channel 000

[0051] like figure 1 , the wireless channel 000 realizes interconnection and information transmission between each user terminal 100 and the base station 200 .

[0052] 1. The first user terminal 110

...

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Abstract

The invention discloses a sparse code multiple address access system and a multi-user detection method thereof, and relates to a fifth-generation mobile communication technology. The system comprisesa wireless channel (000) and is provided with a mobile user terminal (100) and a base station (200); the mobile user terminal (100) comprises a first user terminal (110), a second user terminal (120),...and an n user terminal (1n0) which have the same structure and functions; and the mobile user terminal (100), the wireless channel (000) and the base station (200) sequentially communicate to achieve a multi-user detection function of the sparse code multiple address access system. According to the detection method, after each round of iteration, users with the higher decoding advantage aredirectly decoded and removed to not participate in the follow-up iteration process, and therefore the complexities of the follow-up rounds of iteration are sequentially reduced; the bit error rate ofthe detection method is decreased, and the detection time delay of the detection method is shortened; and low-complexity detection can be conducted on multiple users in the sparse code multiple address access system, and the detection method has the important significance on 5G development.

Description

technical field [0001] The present invention relates to the 5th generation mobile communication technology, in particular to a sparse code multiple access system and a multi-user detection method thereof. Background technique [0002] The rapid popularization of intelligent terminals has led to the explosive growth of demand for wireless data services, exposing the existing wireless access networks to serious problems such as shortage of spectrum resources and low spectrum efficiency, thus prompting people to develop the 5th generation (5G) mobile communication in the future. Research. Efficient multiple access technology is one of the key technologies to be solved in 5G. Sparse Code Multiple Access (SCMA), which supports overloaded connections, is proposed as a candidate multiple access technology for 5G. For SCMA to officially become the air interface technology selected for 5G, efficient multi-user detection is one of the key issues that needs to be solved urgently. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0048H04L1/005H04L1/0052
Inventor 朱翠涛韦宁
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES