Wireless energy-carrying NOMA cooperative network power optimization method

A cooperative network and power optimization technology, applied in the field of wireless communication, can solve problems such as energy-constrained nodes not considered, and achieve the effect of improving energy-constrained problems, reducing the number of iterations, and prolonging battery life

Inactive Publication Date: 2019-08-23
XIDIAN UNIV
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Problems solved by technology

[0006] At present, the research in the cognitive radio network of NOMA cooperation is more on the realization of system

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  • Wireless energy-carrying NOMA cooperative network power optimization method
  • Wireless energy-carrying NOMA cooperative network power optimization method
  • Wireless energy-carrying NOMA cooperative network power optimization method

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Embodiment Construction

[0023] In order to make the object, 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 and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The example of the present invention is described based on the downlink of the NOMA cooperative network of radio frequency energy harvesting technology, and aims to propose a power optimization method of the wireless energy carrying NOMA cooperative network. The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] refer to figure 1 , the present invention builds a NOMA collaborative network based on radio frequency energy harvesting technology, and studies the downlink in a cognitive r...

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Abstract

The invention belongs to the field of wireless physical layers, discloses a wireless energy-carrying NOMA cooperative network power optimization method, and mainly solves the problem of insufficient energy supply of secondary user nodes in an existing NOMA cooperative cognitive radio network. The implementation scheme comprises the following steps: firstly, constructing a NOMA (Non-Orthogonal Multiple Access) cooperative network model based on a radio frequency energy collection technology, and simultaneously receiving signals and radio frequency energy at a secondary user receiver by adoptinga power division architecture; a. An improved genetic algorithm is designed to optimize the power distribution factor and the time slot distribution factor of the model so as to maximize the throughput of the secondary user system. According to the invention, the optimal power distribution factor and time slot distribution factor are obtained, the improvement of the system spectrum efficiency andthe improvement of the energy efficiency of the secondary user system are realized, the service life of the secondary user node is prolonged, and the transmission performance of the whole system is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a NOMA cooperative network power optimization method with wireless energy carrying. Background technique [0002] Cognitive radio technology can perceive changes in the external environment dynamically, and change parameters such as transmission power and carrier frequency in real time, so as to achieve high spectrum utilization. It is applied to many typical scenarios, such as: Ad Hoc network, Mesh network, etc. . Therefore, proposing the NOMA scheme in the cognitive radio scenario has important research significance for 5G systems that use spectrum resources more efficiently. In addition, green communication is one of the goals of 5G communication technology. In a network with limited node energy, it is also an urgent problem to significantly improve system performance without increasing system energy consumption. [0003] The concept of NOMA was first propos...

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Application Information

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IPC IPC(8): H04L12/24H04W24/02G06N3/12H02J50/20H02J50/50
CPCG06N3/126H04L41/145H04W24/02H02J50/20H02J50/50
Inventor 胡永虹阔永红陈健杨龙
Owner XIDIAN UNIV
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