Signal optimization method and system of multicarrier signal and energy simultaneous transmission system

Abstract

The invention discloses a signal optimization method and system of a multicarrier signal and energy simultaneous transmission system. The method comprises the steps that A) a first subcarrier power distribution coefficient and a first sub-band distribution coefficient are endowed, and an optimal signal power distribution ratio is calculated on the basis of a rate relation, the first subcarrier power distribution coefficient and the first sub-band distribution coefficient; and B) a conversion relation is obtained on the basis of the optimal signal power distribution ratio, and is processed on the basis of the Lagrange duality principle to optimize the power distribution coefficient and the sub-band distribution coefficient. The system is used to execute the corresponding method. The signaland energy signals in the emission end are optimized via the Lagrange duality principle to obtain the maximal signal transmission rate, and the frequency range utilization rate of the signal and energy simultaneous transmission system can be improved greatly.

Description

technical field [0001] The present invention relates to the technical field of signal energy simultaneous interpretation, in particular to a signal optimization method and system for a multi-carrier signal energy simultaneous interpretation system. Background technique [0002] Simultaneous Wireless Information and Energy Transfer (Simultaneous Wireless Information and Energy Transfer), that is, the simultaneous transmission of information and energy through wireless means, is an emerging communication technology that integrates wireless communication technology and wireless energy transfer technology. With the development of science and technology, the integration of energy technology and communication technology has become a trend. It can not only achieve high-speed and reliable communication, but also effectively alleviate the pressure of energy and spectrum scarcity. It has important application value in industry, medical treatment, and infrastructure development. Wirele...

AI Technical Summary

Problems solved by technology

However, due to the use of cyclic prefix in OFDM technology, the frequency spectrum cannot be fully utilized. Universal Filtered Multi-carrier (Universal Filtered Multi-carrier), as an emerging physical layer modulation technology, consists of a series of Filtering on sub-bands composed of sub-carriers instead of filtering on the entire frequency band as in OFDM, and no cyclic prefix is ​​used to greatly improve frequency band utilization

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