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Artificial bee colony OFDMA resource allocation method for guaranteeing fairness threshold

A technology of resource allocation and artificial bee colony, which is applied in the direction of allocation standard, transmission path sub-channel allocation, digital transmission system, etc., and can solve problems such as easy system and rate reduction

Pending Publication Date: 2021-01-08
QIQIHAR UNIVERSITY
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  • Application Information

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Problems solved by technology

However, the existing OFDMA resource allocation methods are insufficient in achieving the required fairness threshold and maximizing the sum rate of the system at the same time, and cannot achieve the required fairness threshold through subcarrier allocation. Optimize the allocation to ensure the fairness threshold, which can easily reduce the sum rate of the system

Method used

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  • Artificial bee colony OFDMA resource allocation method for guaranteeing fairness threshold
  • Artificial bee colony OFDMA resource allocation method for guaranteeing fairness threshold
  • Artificial bee colony OFDMA resource allocation method for guaranteeing fairness threshold

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Embodiment Construction

[0068] This patent provides the following embodiments: Assume that the number of users K=7 of a certain OFDMA system, the number of subcarriers N=16, and the noise power spectral density N 0 =-80dB·W / Hz, channel bandwidth B=10 6 Hz, total system transmit power P T =1W, real-time channel gain information|h k,n | 2 (k∈{1,2,...,7}, n∈{1,2,...,16}) can be obtained through channel estimation, and the obtained real-time channel gain information|h k,n | 2 Listed in Table 1, the user rate ratio is set to λ 1 :λ 2 :...:λ 7 =1:1:...:1, the fairness threshold ε is required to reach 0.99.

[0069] Table 1 Real-time channel gain information|h k,n | 2

[0070]

[0071]

[0072] According to the provided embodiment, the OFDMA resource allocation method based on artificial bee colony algorithm guaranteeing fairness threshold, the implementation steps are as follows:

[0073] Step (1), build the system model of OFDMA resource allocation:

[0074]

[0075] The constraints are...

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Abstract

The invention provides an artificial bee colony OFDMA resource allocation method for guaranteeing a fairness threshold, and belongs to the technical field of mobile communication. The method comprisesthe following steps: grouping nectar source individuals, setting different nectar source update degrees for different nectar source groups, effectively embedding a greedy algorithm based on rate proportional fairness into an artificial bee colony algorithm, and marking corresponding dimensions of the nectar source individuals according to the nectar source update degrees; carrying out neighborhood search and update calculation on the marked dimensions, and finally, guiding the fitness of the nectar source individuals, so the smaller nectar source update degree can reach a higher fairness threshold value, and the larger nectar source update degree can reach a lower fairness threshold value; therefore, the required fairness threshold can be realized according to the subcarrier allocation and the sum rate of the OFDMA system can be maximized.

Description

Technical field: [0001] This patent designs an artificial bee colony OFDMA resource allocation method that guarantees a fairness threshold. This method can ensure flexible fairness threshold requirements and maximize the sum rate of the OFDMA system through the artificial bee colony algorithm for subcarrier allocation. It belongs to mobile communication technology field. Background technique: [0002] With the advancement of technology and the rapid development of users' handheld terminals, users have put forward higher and higher requirements for data rate and service quality, which has accelerated the transition of wireless mobile communication networks from 4G to 5G. Orthogonal frequency division multiple access (OFDMA) technology can divide spectrum resources into several mutually orthogonal channels, and has the advantages of anti-multipath fading, anti-interference and high utilization of spectrum resources. It is widely used in mobile communication of 4G cellular net...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0071H04W72/0453Y02D30/70
Inventor 孙明王淑梅徐耀群黄钰景翟康乐张妨曹伟张辉
Owner QIQIHAR UNIVERSITY