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Energy collection method and device based on cognitive radio

A cognitive radio, energy harvesting technology, applied in the field of communication

Inactive Publication Date: 2020-09-29
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional SWIPT systems, it is usually assumed that energy harvesting receivers (ERs) are closer to the transmitter than information receivers (IRs), thus creating a new information security issue

Method used

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  • Energy collection method and device based on cognitive radio
  • Energy collection method and device based on cognitive radio
  • Energy collection method and device based on cognitive radio

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Embodiment Construction

[0121] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0122] Such as figure 1 As shown, an energy harvesting method in a cognitive radio system based on artificial noise provided by an embodiment of the present invention, the method includes the following steps:

[0123] S1: Adopt the transmit beam with artificial noise, ensure the constraint of confidentiality capability and receive energy power co...

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Abstract

The invention provides an energy collection method and device based on cognitive radio, and the method comprises the steps: obtaining a minimum transmitting power model through employing a transmitting wave beam with artificial noise, a confidentiality guarantee capability constraint and a received energy power constraint; carrying out joint design on the emission wave beam and the artificial noise to obtain a linear fractional programming constraint model; introducing a slack variable, and designing the linear fractional programming model by adopting an SCA method to obtain a convex optimization model; and proposing an SCA-based iterative algorithm, and solving an optimal solution by using a CVX toolbox to obtain the minimum transmitting power. The SCA-based iterative algorithm provided by the invention collects energy on the premise of ensuring minimization of information signal transmitting power, and compared with a traditional radio frequency energy collection scheme and an artificial noise energy collection scheme, the method provided by the invention combines an artificial noise technology and a cognitive radio technology, so that the signal transmitting power is remarkablyreduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an energy collection method and device based on cognitive radio. Background technique [0002] The fifth-generation (5G) line technology is expected to meet the increasing demand for wireless devices, such as high data services and radio coverage, and the explosive growth of mobile terminals has led to a severe shortage of wireless spectrum resources, which has become a prominent problem. As one of the effective ways to alleviate the spectrum scarcity problem in green communication and network, cognitive radio (CR) is one of the effective ways to improve spectrum utilization. Although CR technology can significantly improve spectrum utilization, energy shortage still brings serious bottleneck problems to the service quality and lifetime of wireless users. [0003] In recent years, a promising wireless portable communication (SWIPT) technology has been proposed: th...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04W12/12H04W52/18H04W52/30H04B5/00
CPCH04W12/02H04W52/18H04W52/30H04B5/79
Inventor 朱政宇侯庚旺赵飞郝万明王宁王飞孙钢灿王忠勇
Owner ZHENGZHOU UNIV
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