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Downlink linear search type power distribution optimization method for non-orthogonal multiple access system based on data security

A non-orthogonal multiple access and access system technology, applied in the field of downlink linear search power allocation optimization based on data security non-orthogonal multiple access systems, can solve problems affecting user security throughput and other issues

Active Publication Date: 2019-09-06
ZHEJIANG UNIV OF TECH
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Problems solved by technology

Aiming at the NOMA system, users are vulnerable to eavesdropping by eavesdroppers, thus affecting the security throughput of users, and the linear search power allocation optimization problem in the downlink non-orthogonal multiple access system based on data security is studied

Method used

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  • Downlink linear search type power distribution optimization method for non-orthogonal multiple access system based on data security
  • Downlink linear search type power distribution optimization method for non-orthogonal multiple access system based on data security
  • Downlink linear search type power distribution optimization method for non-orthogonal multiple access system based on data security

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Embodiment Construction

[0079] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0080] refer to figure 1 , a data security-based non-orthogonal multiple access system downlink linear search power allocation optimization method, the implementation of this method can maximize the security throughput of the target user who is maliciously eavesdropped, and the invention is applied to wireless network, such as figure 1 In the scenario shown, the optimization method for designing the problem for this goal includes the following steps:

[0081] (1) There are two mobile users under the coverage of the base station. The base station sends data to two users through Non-orthogonal Multiple Access (NOMA), among them, user 1 has a strong channel power gain, and user 2 has a weak channel power gain, but there is an eavesdropping The eavesdropper eavesdrops on the downlink data transmitted by the base station to user 1. Due to the non-orthogonal mul...

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Abstract

A downlink linear search type power distribution optimization method for a non-orthogonal multiple access system based on data security comprises the following steps: (1) two users and an eavesdropperexisting in the coverage range of a base station, and providing a problem of maximizing the security transmission rate of a target user; (2) analyzing the problems, proposing a situation of the problems, and carrying out equivalent conversion; (3) performing hierarchical processing on the problem, and providing a method based on linear search for the bottom-layer problem and the top-layer problemof the problem; and (4) obtaining the optimal solution of the problem under the current condition according to the proposed linear search method. According to the method, the security throughput of the target user is improved, and the quality of service of the wireless network with higher quality is obtained.

Description

technical field [0001] The invention relates to a data security-based non-orthogonal multiple access system downlink linear search power allocation optimization method in a wireless network. Background technique [0002] Future fifth-generation (5G) cellular systems will provide mobile Internet services with ultra-high throughput, low latency, and high energy efficiency in wireless networks. The emerging Nonorthogonal Multiple Access (NOMA) technology is regarded as a key technology for 5G cellular systems to adapt to the explosive growth of mobile terminals and data traffic demands in the future. Contents of the invention [0003] In order to overcome the shortcomings of the prior art, the present invention provides a data security-based non-orthogonal multiple access system downlink linear search power allocation optimization method, in the data security-based downlink non-orthogonal multiple access system The optimal design of the linear search power allocation, the fi...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04K3/00
CPCH04K3/60H04W72/0473Y02D30/70
Inventor 吴远倪克杰吴伟聪钱丽萍卢为党孟利民
Owner ZHEJIANG UNIV OF TECH
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