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Multi-user energy collection cognitive radio system

A cognitive radio and energy harvesting technology, applied in the field of multi-user energy harvesting cognitive radio system, to achieve the effect of maximizing information transmission rate, improving transmission performance, and high engineering practical value

Active Publication Date: 2020-10-02
SUN YAT SEN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the above comparison documents cannot realize that when combining cognitive radio with energy harvesting technology, it is necessary to decide whether the user performs spectrum sensing and access or energy harvesting, so as to ensure the normal energy supply of the system and maximize the throughput of the system quantity problem

Method used

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  • Multi-user energy collection cognitive radio system
  • Multi-user energy collection cognitive radio system

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Embodiment

[0071] Such as Figure 1 to Figure 6 As shown, a multi-user energy harvesting cognitive radio system includes a spectrum sensing module, a spectrum access module, an energy harvesting module and an action selection strategy module, wherein,

[0072] The spectrum sensing module obtains idle sub-bands on the broadband spectrum through a spectrum sensing algorithm;

[0073] The spectrum access module accesses the channel through the Thompson sampling algorithm and the MBA model, combined with the sensing results of the spectrum sensing module;

[0074] The energy collection module is used to store the energy of each time slot for the secondary user;

[0075] The action selection strategy module is used to decide whether each time slot is used for information transmission or energy collection.

[0076] In this embodiment, each secondary user can select the best sub-band for information transmission through spectrum sensing and spectrum access, and can choose the optimal reward a...

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Abstract

The invention provides a multi-user energy collection cognitive radio system in order to solve the problems of frequency spectrum uncertainty, multi-user frequency spectrum access selection and frequency spectrum sensing, access and energy collection action selection in multi-user cognitive radio. The system comprises a spectrum access strategy combined with distributed cooperative sub-broadband spectrum sensing, a spectrum sensing, access and energy collection action selection strategy learning method and a strategy implementation method. The system scheme is suitable for a distributed energycollection secondary user system, comprises the following steps: selecting an optimal sub-band from sub-bands obtained by sensing for access, intelligently deciding whether each time slot is suitablefor energy collection or information transmission, intelligently and reasonably skipping some spectrum sensing processes and the like. Therefore, the system has the obvious advantages of low controlchannel overhead, low energy consumption, high data transmission rate and the like, and has a certain engineering reference value for the design and implementation of an actual energy collection cognitive radio system.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically, relates to a multi-user energy harvesting cognitive radio system. Background technique [0002] With the development of the fifth-generation mobile communication technology (5G), the user access requirements in the communication system are increasing day by day, and spectrum resources are increasingly scarce. Secondary users need to perceive idle sub-bands on a high-bandwidth frequency band for access. Due to the current The sampling technology in the actual engineering system cannot meet the Nyquist sampling rate of high-bandwidth signals, so it is necessary to sample at a sampling frequency lower than the Nyquist rate when performing wideband spectrum sensing. At the same time, in order to suppress channel fading and sampling noise, requires an efficient multi-user cooperative sub-Nyquist spectrum sensing algorithm. In a multi-user system, after each user pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/382H04W16/14H04W72/04H04W72/08H04W72/54
CPCH04B17/382H04W16/14H04W72/0453H04W72/542
Inventor 翁浩生夏明华
Owner SUN YAT SEN UNIV
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