A constant modulus beamforming method in a secure and confidential communication system

A beamforming method and communication system technology, applied in the field of constant modulus beamforming, can solve the problems of hardware implementation cost increase, etc., achieve the effect of high frequency band utilization efficiency, reduce operation consumption, and improve energy utilization efficiency

Active Publication Date: 2020-06-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recent studies have shown that large-scale antenna array beamforming technology can effectively improve the efficiency of frequency band utilization. However, when the number of transmit antennas increases, the cost of hardware implementation will be greatly increased.

Method used

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  • A constant modulus beamforming method in a secure and confidential communication system
  • A constant modulus beamforming method in a secure and confidential communication system
  • A constant modulus beamforming method in a secure and confidential communication system

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Embodiment Construction

[0045] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0046] Such as figure 1 As shown, the constant modulus beamforming method in the secure and confidential communication system includes the following steps:

[0047] S1, initialization parameters;

[0048] S2, according to the parameter of initialization, adopt Dinkelbach algorithm to objective function value η by following formula i Iterate, get and save an objective function value η i ;

[0049]

[0050] in is the c...

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Abstract

The invention discloses a constant modulus beamforming method in a safety and security system, comprising the steps of: S1, initializing parameters; S2, adopting the Dinkelbach algorithm to calculate the objective function value η according to the initializing parameters i Solve the formula to iterate, get and save an objective function value η i ; S3, using the ADMM algorithm to iteratively solve the next generation constant modulus beam w i+1 and the corresponding objective function value η i+1 ; S4, the n obtained according to step S2 i And step S3 obtains η i+1 Carry out judgment and outer layer iteration, and output constant modulus beam w i+1 . The present invention has higher frequency band utilization efficiency, and uses multi-antenna technology to improve the utilization efficiency of spectrum; the modulus length of each element in the precoding matrix of the present invention is constant and equal, so only a single radio frequency link and a simple phase The precoding of information can be realized by using a shifter, which greatly reduces the hardware cost of a large-scale antenna array. The invention fixes the transmission power of each antenna, can reduce the power consumption of the whole system, and improves the energy utilization efficiency.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a constant modulus beam forming method in a secure and confidential communication system. Background technique [0002] MISOME (Multiple-Input Single-Output Multiple-Evesdropper) is one of the commonly studied scenarios in the field of physical layer security. In a previous study [1], Khisti and Wornell derived a mathematical representation of the MISOME secrecy capacity and demonstrated that beamforming techniques can optimally achieve this secrecy capacity. Transmit beamforming technology is a simple and efficient technology for transmitting information. Recent studies have shown that large-scale antenna array beamforming technology can effectively improve the efficiency of frequency band utilization. However, when the number of transmit antennas increases, the cost of hardware implementation will be greatly increased. In order to utilize large-scale antenna arrays more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0426H04B7/0456H04B7/06
CPCH04B7/0426H04B7/0456H04B7/0617Y02D30/70
Inventor 利强李超林静然
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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