Resource allocation method for bi-directional SWIPT relay system under hardware damage condition

Abstract

The invention provides a resource allocation method for a bi-directional SWIPT relay system which can alleviate hardware damage under the consideration of actual hardware damage conditions. The methodcomprises the following steps: S1, constructing a signal transmission model; S2, constructing an optimization formula; S3, according to the upper bound value of the transmission performance under thehardware damage, adopting a low-complexity optimization method based on the relaxation upper bound to obtain the time allocation value of the system; and S4, obtaining a closed-form solution of the power split ratio according to the time allocation value. The beneficial effect of the invention is that the method of the invention reduces the influence of the hardware damage, and the obtained performance curve is the approximate solution of the theoretical curve.

Description

technical field [0001] The invention relates to the technical field of communication systems, in particular to a resource allocation method satisfying a two-way SWIPT relay system under hardware damage conditions. Background technique [0002] Due to the influence of phase noise, I / Q imbalance, nonlinear high-power amplification, etc., actual equipment often suffers from many hardware damages. These hardware damages will cause signal distortion and signal constellation distortion, thereby reducing the transmission performance of the system. . When analyzing system performance, traditional analysis methods usually presuppose that the hardware is designed as an ideal physical device that does not suffer from hardware damage, or consider the impact of these damages as part of the additional noise of the receiver. However, the actual hardware damage brings The incoming signal distortion is affected by the transceiver power and cannot be simply treated as white noise, and the cu...

AI Technical Summary

Problems solved by technology

At present, the application research of this technology in the two-way relay transmission network has attracted the attention of many researchers, but most of the research considers the ideal hardware situation, and no one has conducted research on the two-way SWIPT transmission performance under actual hardware damage.

At the same time, considering that the transmission performance of the system will be curbed under hardware damage, the SWIPT system that relies on the transmission of radio frequency information for energy will cause obvious performance damage if it follows the traditional transmission design and resource allocation method that considers the ideal hardware state

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