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Spectrum Pool Interference Suppression Method Based on Multi-objective Optimization

A multi-objective optimization and interference suppression technology, which is applied in the field of spectrum pool interference suppression based on multi-objective optimization, can solve problems such as the inability to guarantee the quality of cognitive user data transmission, and achieve the reduction of authorized user interference energy, interference between many users, and suppression The effect of interference between multiple users

Inactive Publication Date: 2016-01-27
NORTHEAST GASOLINEEUM UNIV
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  • Description
  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a spectrum pool interference suppression method based on multi-objective optimization, which is used to solve the problem that the existing cognitive radio spectrum pool multi-user interference suppression method cannot guarantee the quality of cognitive user data transmission

Method used

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  • Spectrum Pool Interference Suppression Method Based on Multi-objective Optimization
  • Spectrum Pool Interference Suppression Method Based on Multi-objective Optimization
  • Spectrum Pool Interference Suppression Method Based on Multi-objective Optimization

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be further described:

[0030] combine figure 1 , figure 2 As shown, this spectrum pool interference suppression method based on multi-objective optimization, on the basis of quantitative analysis of spectrum pool interference energy, first calculates the interference energy affecting each licensed user subcarrier in the spectrum pool; then determines the cognitive user subcarrier The interference energy of each authorized user subcarrier; then calculate the interference energy of each cognitive user subcarrier to the authorized user, so as to determine the subcarrier that produces the greatest interference; then, suppress the interference with the cognitive user data transmission rate and the authorized user The demand is the goal, and a multi-objective optimization model based on weight parameters is established; finally, based on the optimization model, the optimal number of maximum interfer...

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Abstract

The invention relates to a multi-objective optimization-based spectrum pool interference rejection method. The method comprises the following steps of: 1. in a spectrum pool, confirming the mean ICI (Inter-Carrier Interference) energy which influences an authorized user; 2. obtaining the mean ICI energy generated by a J subcarrier of a cognitive user to the authorized user; 3. confirming the subcarrier which generates Max shown in the description, wherein the subcarrier is the obtained maximum interference subcarrier; and 4. due to a multi-objective optimization model, determining to select the maximum interference subcarrier with optimal quantity to be screened by comprehensively considering the transmission requirement of the cognitive sub user and the authorized user and taking rho as weight parameters. According to the method, the optimal number of the screened subcarriers is confirmed by taking the reduction of the interference energy of the authorized user and the guarantee of the transmission requirement as the optimization objective, and the maximum interference subcarrier is selected to be screened, so that the interference among the users within the spectrum pool can be preferably restrained, and the data transmission quality of the users can be further guaranteed.

Description

1. Technical field: [0001] The invention relates to the technical category of interference suppression among multiple users of a cognitive radio frequency spectrum pool, and specifically relates to a spectrum pool interference suppression method based on multi-objective optimization. 2. Background technology: [0002] The traditional wireless spectrum allocation scheme is to allocate most of the spectrum to radio business departments in a licensed manner, while the remaining small part of the spectrum is used as public unlicensed spectrum. This static spectrum allocation scheme leads to the contradiction that the utilization rate of the licensed frequency band is low and other users cannot use the idle frequency band. The cognitive radio technology based on the concept of dynamic spectrum access can make use of temporarily idle spectrum resources, which greatly improves the current tight situation of spectrum resources. Spectrum pooling is the most efficient spectrum usage ...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W16/14
Inventor 刘苗逯野曾丽丽
Owner NORTHEAST GASOLINEEUM UNIV
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