Wireless information and power transfer system maximum safety rate optimization method based on NOMA

A technology of wireless energy-carrying communication and safe rate, applied in the field of maximum safe rate optimization of wireless energy-carrying communication system based on NOMA, can solve the problems of access and energy consumption security at the same time, achieve optimal power allocation and save spectrum The effect of resources
CN108495337AActive Publication Date: 2018-09-04SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2018-09-04

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Abstract

The invention discloses a wireless information and power transfer system maximum safety rate optimization method based on NOMA; the method comprises the following steps: firstly, a wireless information and power transfer system based on the NOMA is provided, the system is provided with a cell base station BS, M information receivers IRs and K energy receivers ERs, wherein the ER obtains energy from a radio frequency signal transmitted by the BS and eavesdrops on the information sent by the BS to the IR; according to the principle of the NOMA technology, the information transmitted by the BS tothe IR transmits a signal through a superposition coding technology, and the expression is as follows: formula; in the formula, am is the signal transmission power distribution coefficient of the mthIR, P is the signal transmission total power of the BS, xm is the confidential information of the mth IR, and sigma 2 is the additive gaussian white noise; and an optimization parameter AM is adjusted according to the method, certain energy can be provided for the ER, and a certain information rate is provided for the IR; and the purpose of providing the maximum safety information rate is provided for the IR in the case of the ER eavesdropping on information.
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Description

technical field

[0001] The invention relates to the field of wireless transmission, in particular to a method for optimizing the maximum safe rate of a NOMA-based wireless energy-carrying communication system. Background technique

[0002] As the network grows, equipment access and service requirements are increasing, spectrum resources are becoming increasingly scarce, and the required energy consumption is also greatly increasing. NOMA (Non-orthogonal Multiple Access, non-orthogonal multiple access) as a technology that can provide higher spectral efficiency and more access, thus gaining more attention, has become the next generation of mobile communication multiple access technology One of the popular candidates. Different from the previous 3G code division access and 4G orthogonal frequency division multiplexing, the NOMA system allocates the same spectrum resources to multiple users, and realizes power multiplexing by allocating different power, while users with good c...

Claims

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