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MU-DAS simultaneous wireless information and power transfer optimal robustness construction method

A technology of wireless energy-carrying communication and construction methods, applied in the field of optimal robust construction

Inactive Publication Date: 2015-06-10
ZHENGZHOU UNIV
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Problems solved by technology

[0004] Aiming at the defects in the prior art, the present invention provides a robust construction method of the MU-DAS wireless energy-carrying communication system, which can solve the problem of maximizing the worst terminal signal and the limit of each antenna unit power and terminal collection power. Signal to Interference plus Noise Ratio (SINR) optimization problem to obtain the optimal power splitting factor and beamforming vector

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  • MU-DAS simultaneous wireless information and power transfer optimal robustness construction method
  • MU-DAS simultaneous wireless information and power transfer optimal robustness construction method
  • MU-DAS simultaneous wireless information and power transfer optimal robustness construction method

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Embodiment Construction

[0078] 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 some 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.

[0079] Power splitting is mainly based on maximizing the worst SINR as the optimization goal. While satisfying the acquisition power of each terminal, it is also necessary to satisfy that the system has a certain limit on the upper limit of the transmission power of each distributed antenna unit. Then the optimal robust construction method of the...

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Abstract

The invention provides an MU-DAS simultaneous wireless information and power transfer optimal robustness construction method. The method comprises obtaining a channel estimation matrix of terminals in the system; building an Euclidean ball with the channel estimation matrix serving as the center and the preset estimation error range serving as the radius; building the biggest optimization problem model of the worst signal to interference plus Noise Ratio (SINR) according to the channel estimation matrix; transforming the biggest optimization problem model of the worst SINR into power balance problem models of distributive antennae; simplifying the power balance problem models; correcting the power balance problem models through a positive semidefinite relaxation technology; obtaining optimal beam forming vectors of the terminals according to the corrected power balance problem models; obtaining power splitting factors by using the corrected power balance problem models. By the aid of the method, the problem of the SINR optimization of maximum worst terminals limited by antenna unit power and terminal acquisition power amount can be solved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an optimal robust construction method of a MU-DAS wireless energy-carrying communication system. Background technique [0002] Wireless energy carrying communication (Simultaneous Wireless Information and Power Transfer, SWIPT) is based on the existing wireless power supply technology, through a certain technical means, while completing energy transmission and collection (Energy Harvesting, EH), to achieve efficient and reliable communication, thereby making full use of precious transmit power. Based on the remarkable feature of parallel transmission of information and energy, SWIPT technology is expected to be widely used in information exchange and energy transmission between high-speed radio frequency tags (Radio Frequency Identification, RFID), the Internet of Things, and various mobile terminals. At the same time, by extracting the energy in the received signal, it c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L25/02
Inventor 王忠勇朱政宇张园园张延彬高向川葛伟力
Owner ZHENGZHOU UNIV