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A multi-terminal signal detection method and base station in non-orthogonal multiple access

A non-orthogonal multiple access and signal detection technology, which is applied to the shaping network in the transmitter/receiver, baseband system components, etc., can solve the problem of high complexity and achieve the effect of reducing complexity

Active Publication Date: 2019-07-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] It can be seen that when the number of users who multiplex the same time-frequency resources in the PDMA system is large, the complexity of detection using the BP algorithm at the receiving end under the condition of multi-antenna reception is relatively high

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  • A multi-terminal signal detection method and base station in non-orthogonal multiple access
  • A multi-terminal signal detection method and base station in non-orthogonal multiple access
  • A multi-terminal signal detection method and base station in non-orthogonal multiple access

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Embodiment Construction

[0074] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0075] In the following embodiment, PDMA is taken as an example to describe the process of multi-user detection in non-orthogonal multiple access. It should be noted that the multi-user detection process provided in the following embodiment can also be applied to other non-orthogonal multiple access. The address access technology is not limited to PDMA.

[0076] In the embodiment of the present invention, such as figure 2 As shown, the det...

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Abstract

The invention discloses a multi-terminal signal detection method in non-orthogonal multiple access, and a base station, and is used for reducing the complexity for detecting multi-terminal data signals in the multi-antenna reception condition in the non-orthogonal multiple access. The method includes: the base station determines the number of receiving antennas which satisfy the current detection performance and enable the detection complexity to be the lowest; the receiving antennas are selected from a candidate receiving antenna set according to the determined number of the receiving antennas; and channel estimation of each selected receiving antenna is performed, a channel estimation matrix of each selected receiving antenna is obtained, and data signals corresponding to a plurality of terminals for time-frequency resource multiplexing are determined according to the channel estimation matrix of each selected receiving antenna and a receiving signal of each selected receiving antenna, wherein rows of the channel estimation matrix represent multiplexed time-frequency resources, and columns of the channel estimation matrix represent a plurality of terminals multiplexed on a plurality of time-frequency resources corresponding to one row of the channel estimation matrix.

Description

Technical field [0001] The present invention relates to the technical field of non-orthogonal multiple access, in particular to a method and base station for multi-terminal signal detection in non-orthogonal multiple access. Background technique [0002] With the rapid development of wireless communication, the number of users and business volume has exploded, which puts forward higher requirements on the system capacity of wireless networks. Industry research predicts that the traffic of mobile data services will double every year. By 2020, about 50 billion terminals will be connected to wireless mobile networks worldwide. Explosive user growth has made multiple access technology a central issue in network upgrades. Multiple access technology determines the basic capacity of the network, and has a great impact on system complexity and deployment costs. [0003] Traditional mobile communications (1G-4G) use orthogonal multiple access technologies, such as frequency division multi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L25/02
Inventor 任斌康绍莉刘昊宋扬毕海
Owner DATANG MOBILE COMM EQUIP CO LTD