An Optimal Power Allocation Method for Untrusted Relay Networks with Imperfect CSI

A relay network and optimal power technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as the impossibility of CSI
CN106413074BActive Publication Date: 2019-01-18NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Publication Date
2019-01-18

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Abstract

The invention provides an optimal power allocation method of an untrusted relay network under perfect CSI. The method comprises the following steps: firstly, describing a communication scheme of a two-hop half-duplex relay network, then providing an optimal power allocation scheme, and finally analyzing channel ESR to acquire a reachable safety rate. According to the optimal power allocation method provided by the invention, an optimal power allocation formula in a transmission process is provided to maximize the safety rate, and the ESR under high SNR is further analyzed for evaluating the reachable average safety rate. The approximate optimal power allocation can bring a higher safety rate than equal power allocation.
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Description

technical field

[0001] The invention relates to an optimal power allocation scheme of an untrusted relay network under the condition of non-ideal channel state information (Channel State Information, CSI). Background technique

[0002] Multi-hop relay is identified as an energy-efficient transmission scheme, which is the optimal way to solve wireless communication security. The method of physical layer secure transmission has the advantages of low computational complexity and resource saving. In recent years, cooperative diversity technology has attracted the attention of many scholars because it can improve the security of the physical layer against eavesdropping.

[0003] In the physical layer, there is a game problem of power allocation between users and interference sources. The interference source hopes to transmit an interference signal with sufficient power to prevent eavesdroppers from eavesdropping on the user's transmission information, and the user also hopes th...

Claims

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