Multi-dimensional resource allocation method meeting SWIPT and applied to bidirectional DF relay system

A relay system and resource allocation technology, applied in the field of multi-dimensional resource allocation that meets SWIPT

Active Publication Date: 2020-08-14
CHONGQING UNIV OF TECH
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However, traditional grid charging and battery replacement are difficult to achieve in some specific sensor network scenarios, such as large-scale sensor networks, embe...

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  • Multi-dimensional resource allocation method meeting SWIPT and applied to bidirectional DF relay system
  • Multi-dimensional resource allocation method meeting SWIPT and applied to bidirectional DF relay system
  • Multi-dimensional resource allocation method meeting SWIPT and applied to bidirectional DF relay system

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Embodiment Construction

[0067] 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.

[0068] Explanation of terms:

[0069] SWIPT (Simultaneous Wireless Information and Power Transfer): wireless information energy simultaneous transmission;

[0070] PS (Power Splitting): power division;

[0071] DF(Decode and Forward): decoding and forwarding;

[0072] MAC (Multiple Access): multiple access;

[0073] BC (Broadcast): broadcast

[0074] like figure 1 As shown, the present invention discloses a specific embodiment of a multi-dimensional resource allocation method that satisfies SWIPT and is applied to a two-way DF relay system, such as figure 2 As shown, it is the transmission and signal model of the two-way DF relay system, and the two-way DF relay system includes two source nodes S 1 and S 2 , also includes a relay R configured with a PS en...

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Abstract

The invention discloses a multidimensional resource allocation method meeting SWIPT and applied to a bidirectional DF relay system. The method aims at jointly optimizing source end power distribution,a relay signal energy power division ratio and transmission time distribution to improve the interruption performance of a system. The basic idea of the method is as follows: firstly, establishing anoptimization model for minimizing the system outage probability according to a system model, then equivalently converting an original optimization problem for optimizing the outage probability into amaximum normalization signal-to-noise ratio problem, and finally, carrying out dimension reduction processing on the optimization problem and solving a closed-form solution of each resource allocation by combining a two-step optimization algorithm and a scaling method. According to the invention, the complexity of multidimensional resource allocation of the bidirectional DF energy-carrying relaysystem is reduced, and an effective resource allocation scheme is provided for the improvement of interruption performance.

Description

technical field [0001] The invention relates to the technical field of communication systems, in particular to a multi-dimensional resource allocation method that satisfies SWIPT and is applied to a two-way DF relay system. Background technique [0002] With the development of the Internet of Things (IoT), more and more low-power wireless nodes join the network, a large number of wireless access and rapidly growing communication requirements lead to rapid energy consumption, which seriously restricts the use of energy-limited sensors. Transmission performance and lifetime of node-based IoT. However, traditional grid charging and battery replacement are difficult to achieve in some specific sensor network scenarios, such as large-scale sensor networks, embedded devices, and remote area networks. An effective energy supply mechanism is urgently needed to provide energy-constrained transmission networks. Continuous energy supply. These years of research have shown that Simult...

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Application Information

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IPC IPC(8): H04W72/04H04W40/22
CPCH04W72/0446H04W72/0473H04W40/22H04W72/53Y02D30/70
Inventor 彭醇陵王国仲赵明富
Owner CHONGQING UNIV OF TECH
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