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PS-strategy-based delay transmission allowing method in SWIPT bidirectional transmission relay system

A relay system and two-way transmission technology, applied in the field of wireless communication, can solve problems such as time-consuming and resource-consuming

Pending Publication Date: 2020-11-24
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of one-way relay transmission, the distance of network transmission can be increased, but at the cost of consuming more time resources, the two-way relay transmission method can well solve this drawback

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  • PS-strategy-based delay transmission allowing method in SWIPT bidirectional transmission relay system
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  • PS-strategy-based delay transmission allowing method in SWIPT bidirectional transmission relay system

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] The gist of the present invention is to propose a delayed transmission method in the SWIPT two-way transmission relay system based on the PS strategy, so that the system can obtain the optimal actual maximum throughput. The two source nodes are active, the relay node is passive, and the structure diagram is in figure 1 given in. Among them, the passive relay adopts the PS receiving strategy.

[0036] Such as figure 1 As shown in Fig. 1, two active sour...

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Abstract

The invention discloses a PS-strategy-based delay transmission allowing method in an SWIPT bidirectional transmission relay system. The SWIPT bidirectional transmission relay system comprises two active source nodes and a passive relay node. The relay node has a radio frequency energy harvesting capability and employs a power split (PS) strategy. The whole communication channel is a quasi-static Rayleigh attenuation channel. The SWIPT two-way transmission relay system adopts a delay-allowed relay (TDR) strategy, and the TDR strategy means that a receiving end node and a sending end node are not required to perform strict time synchronization. And g a function relationship between the actual maximum throughput and the power division coefficient is obtained through theoretical derivation. Anoptimization problem is established by taking the optimization of the actual maximum throughput as a target, and the optimal power division coefficient and the optimal actual maximum throughput are obtained by adopting an optimization algorithm.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a delayed transmission method in a SWIPT two-way transmission relay system based on a PS strategy. 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 simultaneous transmission of radio frequency signal information and energy is called simultaneous communication technology, also known as SWIPT (Simultaneous Wireless Information and Power Transfer) technology. The research on this technology is of great significance to the development of wireless transmission networks. [0003] The key to the simultaneous transmission of information and ...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W40/10H04W40/22H04W56/00
CPCH04W24/02H04W40/10H04W40/22H04W56/001Y02D30/70
Inventor 李建雄张宏宇
Owner TIANJIN POLYTECHNIC UNIV