Communication system power distribution method and device, terminal and readable storage medium

Abstract

The invention discloses a communication system power distribution method and device, a terminal and a readable storage medium, and the method comprises the steps: obtaining channel state information,and searching top in an interval through employing a dichotomy, wherein the parameter top is the optimal value of the parameter t, and the parameter t is the constructed target function related to thesecrecy outage probability; and then calculating the sending power of the S parallel sub-channels according to the determined parameters to finish power distribution. The invention also provides a device for realizing the method, a terminal and a readable storage medium. According to the method, an S-dimensional optimization problem about parallel sub-channel power distribution is converted intoa top one-dimensional search problem, and the solving process is simplified. In the top solving process, a bisection method is adopted to carry out one-dimensional search, so that the formed two-layerone-dimensional search algorithm has very low complexity, and the secrecy interruption probability can be reduced under the condition of a given secrecy rate.

Description

technical field [0001] The invention belongs to the communication field, and relates to a communication system power allocation method, device, terminal and readable storage medium. Background technique [0002] The development of wireless communication technology has further enhanced the effectiveness and reliability of communication, and people have paid more and more attention to information security issues in wireless communication. Since the broadcasting characteristic of electromagnetic waves is the root of the information leakage problem in wireless communication, a key point to enhance the security of wireless communication is to ensure the safe transmission of information at the physical layer. In view of this, the physical layer secure transmission technology, which is a powerful supplement to the traditional encryption technology, has attracted extensive attention of researchers. [0003] Most of the existing research on physical layer security transmission techn...

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Problems solved by technology

[0006] The object of the present invention is to provide a communication system power allocation method, device, terminal and readable storage medium to solve the problem that the physical layer security transmission method of the broadband wireless OFDM communication system in the above-mentioned prior art is cumbersome and difficult to be practically applied. In the case of a fixed secrecy rate, the probability of secrecy interruption is reduced, the implementation is simple and efficient, and it can meet the real-time requirements of communication

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