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Resource allocation method of non-orthogonal multi-access communication system based on ant colony algorithm

A non-orthogonal multiple access and communication system technology, applied in the field of resource allocation of non-orthogonal multiple access communication systems, can solve problems such as excessive allocation of energy or bandwidth, long battery replacement cycles of equipment, waste of resources, etc., to save communication energy The effect of loss

Active Publication Date: 2018-05-25
SUN YAT SEN UNIV
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Problems solved by technology

IoT devices have the characteristics of low communication rate requirements and long battery replacement cycles. Excessive allocation of energy or bandwidth to such devices will cause waste of resources

Method used

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  • Resource allocation method of non-orthogonal multi-access communication system based on ant colony algorithm
  • Resource allocation method of non-orthogonal multi-access communication system based on ant colony algorithm
  • Resource allocation method of non-orthogonal multi-access communication system based on ant colony algorithm

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Embodiment Construction

[0031] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes how the present invention is implemented with reference to the accompanying drawings and specific embodiments.

[0032] The focus of the present invention is to use the ant colony algorithm to provide the most energy-saving resource allocation scheme for the visible light multi-carrier non-orthogonal multiple access communication system. Without loss of generality, consider the situation where one LED is connected to K devices in a visible light communication system (such as figure 1 Shown). It is also assumed that there are N sub-carriers available for these K devices. In addition, for simple analysis, it is assumed that each sub-carrier can only be allocated to at most two devices at the same time. According to the agreement of NOMA [5], in the n(0 <n <N+1) In the subcarriers, the signal sent by the LED can be expressed as ...

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Abstract

The method is focused on the concept of green communication and provides a resource energy-saving allocation scheme for a visible-light multi-carrier non-orthogonal multi-access communication system based on an ant colony algorithm; and according to the resource energy-saving allocation scheme provided by the invention, communication energy loss can be effectively reduced.

Description

Technical field [0001] The present invention relates to the field of Visible Light Communication (VLC), and more specifically, to a resource allocation method of a non-orthogonal multiple access communication system based on an ant colony algorithm. Background technique [0002] The demand for modern wireless communication has shown rapid growth with the popularization of mobile phones and other wireless devices, and the available resources in the RF frequency band have become increasingly scarce. Solving the problem of scarce spectrum resources has become a hot spot in communication research. The visible light band has an undeveloped resource of 400THz, which is equivalent to 1000 times the spectrum of all current RF bands. Visible light refers to the part of light that can be perceived by the human eye. It is located in the frequency range between ultraviolet and infrared. The wavelength range of the entire visible light frequency range is 380-780nm. Visible light communicatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116H04B10/80
CPCH04B10/116H04B10/80
Inventor 方富荣张琳
Owner SUN YAT SEN UNIV