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Maximum and minimum user safety energy efficiency optimization method for large-scale MIMO system based on SWIPT

A large-scale, user-friendly technology, applied in the field of safety and energy efficiency resource management, can solve problems such as ignoring safety and energy efficiency

Active Publication Date: 2020-05-26
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Through reading a large number of literatures, we can see that the existing literature mainly adopts the system security energy efficiency resource allocation method and the system security rate resource allocation method to maximize the system security energy efficiency, ignoring the security energy efficiency of the user in the worst case

Method used

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  • Maximum and minimum user safety energy efficiency optimization method for large-scale MIMO system based on SWIPT
  • Maximum and minimum user safety energy efficiency optimization method for large-scale MIMO system based on SWIPT
  • Maximum and minimum user safety energy efficiency optimization method for large-scale MIMO system based on SWIPT

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0024] The technical scheme that the present invention solves the problems of the technologies described above is:

[0025] This implementation case is a SWIPT-based massive MIMO system maximizing minimum user security energy efficiency optimization method.

[0026] The specific implementation cases are listed as follows:

[0027] In the first step, fix the BS transmit power P t and BS power allocation factor Update user power allocation factor ρ k . According to the objective function where the numerator in the objective function represents the secrecy rate of user k, that is, the achievable security rate of user k minus the rate of the eavesdropper, ( ) + =max{0,}, Indicates the reachable spee...

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Abstract

The invention discloses a maximum and minimum user safety energy efficiency optimization method for a large-scale MIMO system based on SWIPT. The method comprises the following steps: performing initializing; judging whether an energy efficiency constraint condition is met or not according to the initialized energy efficiency: if the condition is met, giving the optimal safety energy efficiency, and ending the method; otherwise, entering the next step, and iteratively optimizing the user power distribution factor; iteratively optimizing the BS power distribution factor; iteratively optimizingthe BS average transmitting power; finally, iteratively searching the safety energy efficiency by utilizing a dichotomy, judging whether the product constraint of the maximum safety energy efficiencyfunction and the minimum safety energy efficiency is met or not, if the condition is met, updating the minimum safety energy efficiency, and if the updated value meets the constraint condition, continuing iteration, otherwise, outputting the maximum safety energy efficiency. And if the condition is not established, updating the maximum safety energy efficiency, if the updated value meets the constraint condition, continuing iteration, and otherwise, outputting the minimum safety energy efficiency. The result obtained by the method can obviously improve the system safety energy efficiency resource utilization rate, and the practicability and feasibility are high.

Description

technical field [0001] The invention belongs to the technical field of Security Energy Efficiency (SEE) resource management, in particular to a resource allocation method for maximizing minimum user security energy efficiency in a massive multiple-input multiple-output (MIMO) system based on Simultaneous Wireless Information and Power Transmission (SWIPT). Background technique [0002] With the continuous acceleration of mobile Internet technology research and development, the broadcast characteristics of wireless information have seriously threatened the security of high-speed information transmission, and physical layer security has increasingly become the focus of research. At present, 5G mobile communication is mainly changing from the aspects of network security system architecture, networking technology and wireless transmission technology to improve the reachable rate and energy efficiency of mobile security communication. [0003] The traditional information security...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/00H04W72/04H04W72/08H04W72/54
CPCH04W72/0473H04W12/03H04W72/542Y02D30/70
Inventor 万晓榆杨晓霞王正强樊自甫张鸿佳
Owner CHONGQING UNIV OF POSTS & TELECOMM
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