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Millimeter wave wireless energy-carrying safety communication method and device

A technology for wireless energy carrying and secure communication, applied in the field of communication

Active Publication Date: 2020-12-11
ZHENGZHOU UNIV
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Problems solved by technology

Therefore, a large number of antennas will cause immeasurable hardware loss and energy consumption

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  • Millimeter wave wireless energy-carrying safety communication method and device
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  • Millimeter wave wireless energy-carrying safety communication method and device

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Embodiment Construction

[0108] 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 a part of 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.

[0109] The present invention provides a millimeter-wave wireless energy-carrying secure communication method and device. Considering the constraints of nonlinear energy harvesting and maximum transmit power, a joint optimization problem of digital precoding vector, power split ratio and artificial noise covariance matrix is ​​proposed to maxi...

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Abstract

The invention relates to a millimeter wave wireless energy-carrying safety communication method and device for maximizing the secrecy rate of a system. The method comprises the following steps: S1, adopting a B-bit quantization phase shifter to realize analog precoding in a full connection and sub-connection structure; S2, constructing a joint optimization problem of a digital precoding vector, apower splitting rate and an artificial noise covariance matrix; S3, proposing an alternating optimization algorithm based on semi-definite relaxation to solve a suboptimal solution; and S4, proposingan alternating optimization algorithm based on zero-forcing precoding to reduce the complexity. The invention provides the secrecy rate maximization method and device based on millimeter waves SWIPT by combining the millimeter waves and the SWIPT. Millimeter waves can be used for filling more antennas with smaller physical sizes; in a multi-user system, the SWIPT interference power is converted into the energy of a receiving end, so that the energy efficiency can be improved; and analog / digital hybrid precoding is adopted, and the number of needed RF chains is far smaller than the number of antennas.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for millimeter wave wireless portable energy security communication. Background technique [0002] In recent years, millimeter-wave (Mmwave) massive multiple-input multiple-output (MMIMO) has been considered as a promising technology for future wireless communications. In previously studied MIMO systems, a dedicated radio frequency (RF) chain was required to connect each antenna. Therefore, a large number of antennas will cause immeasurable hardware loss and energy consumption. Hybrid precoding (HP) has been proposed to address this problem. There are two types of HP architectures: full connections and secondary connections. Comparing the two architectures, higher spectral efficiency (SE) can be achieved in the fully connected architecture, while higher energy efficiency (EE) can be achieved in the secondary connected architecture. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0413H04B7/0456
CPCH04B7/0413H04B7/0456Y02D30/70
Inventor 朱政宇郝万明孙钢灿马梦园王忠勇刘沛佳申凌峰赵飞
Owner ZHENGZHOU UNIV
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