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The passive relay in the swipt system collects interference energy to improve the optimal system rate method

A system rate, passive relay technology, applied in transmission systems, digital transmission systems, power management, etc., can solve problems such as system rate reduction and system performance impact

Inactive Publication Date: 2020-10-30
TIANJIN POLYTECHNIC UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

The existing passive relay SWIPT system stops working in a strong interference environment, resulting in a reduction in system rate and a great impact on system performance

Method used

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  • The passive relay in the swipt system collects interference energy to improve the optimal system rate method
  • The passive relay in the swipt system collects interference energy to improve the optimal system rate method
  • The passive relay in the swipt system collects interference energy to improve the optimal system rate method

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The gist of the present invention is to propose a method for improving the optimal system rate by collecting interference energy by passive relays in a SWIPT system, and improving system performance in an interference environment. The proposed method has important guiding significance for reducing the degree to which the optimal system rate is affected by interference signals.

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] figure 1 is the schematic diagram of the system transmission time slot. like figure 1 As shown, the duration of a certain period of strong interference is mT, where T is the duration of a time slot. During this period, the system cannot stop the simultan...

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Abstract

The invention relates to a method for increasing the optimal system rate by collecting interference energy through a passive relay in a SWIPT system, and belongs to the technical field of wireless communication. A SWIPT technology based on time division is adopted in the transmission method of the relay. The method comprises the steps that: the SWIPT system with the passive relay stops working ina strongly interfered environment; the relay collects energy of interference signals; and then, the collected interference energy is equally distributed in a communication process before interferencesignals arrive next time. An optimization algorithm is adopted; the system dynamically adjusts time slot partition coefficients in real time, so that the optimal time slot partition coefficient and the optimal system rate are obtained; therefore, the influence degree of the interference signals on the optimal system rate of the SWIPT system with the passive relay is reduced; and the system performance is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a method for improving the optimal system rate by collecting interference energy by a passive relay in a SWIPT system. Background technique [0002] Radio frequency signals not only carry the information to be transmitted, but also have energy of their own. In a wireless communication system, if it is possible to transmit energy while using radio frequency signals to transmit information, the service life of the wireless network system can be extended to a large extent. The technology of studying the simultaneous transmission of radio frequency signal information and energy is called SWIPT technology, and the research of this technology is of great significance to the development of wireless transmission network. [0003] Relay technology can extend the coverage of communication, increase the capacity of the system and improve the quality of service for users. As a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W52/24H04W52/26H04W52/46
CPCH04L5/0078H04W52/243H04W52/267H04W52/46
Inventor 李建雄丁学龙赵可
Owner TIANJIN POLYTECHNIC UNIV
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