Cognitive radio network spectrum allocation method based on cuckoo search algorithm

A cuckoo search and cognitive radio technology, which is applied in the field of spectrum allocation of cognitive radio networks based on the cuckoo search algorithm, can solve the problem of low efficiency of spectrum allocation methods

Inactive Publication Date: 2015-09-23
ZHEJIANG UNIVIEW TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the efficiency of the existing spectrum allocation

Method used

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  • Cognitive radio network spectrum allocation method based on cuckoo search algorithm
  • Cognitive radio network spectrum allocation method based on cuckoo search algorithm
  • Cognitive radio network spectrum allocation method based on cuckoo search algorithm

Examples

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Example Embodiment

[0060] Such as figure 1 As shown, a cognitive radio network model includes authorized users, cognitive users, and cognitive base stations. Each authorized user occupies the right to use a certain authorized frequency band. The cognitive user communicates through the cognitive base station, and can use it only when it is detected that the authorized spectrum is free through spectrum sensing.

[0061] Such as figure 2 As shown, a cognitive radio network spectrum allocation method based on the cuckoo search algorithm is divided into the following steps:

[0062] Step 1. Assume that there are multiple authorized users in the cognitive radio network, M cognitive users, and cognitive users obtain N idle frequency bands through spectrum sensing. According to the spectrum sensing result and the user's own information, the available spectrum matrix L, the benefit matrix B and the interference matrix C are obtained respectively. among them:

[0063] Cognitive user m detects whether the aut...

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Abstract

The invention discloses a cognitive radio network spectrum allocation method based on a cuckoo search algorithm. Cognitive network total benefit maximization is used as an optimal object, and based on the cuckoo search algorithm, the efficient spectrum allocation method is designed. The performance of solution space exploring by the cuckoo search algorithm is high, the cuckoo search algorithm can jump out of a local extremum flexibly, the structure is very simple, the number of control parameters is small, parameter adjusting and setting are convenient, and implementation is easy. The cuckoo algorithm is used in radio spectrum resource allocation, radio spectrum resources can be efficiently allocated to cognitive users, cognitive network benefit maximizing can be well achieved, and the spectrum efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of cognitive radio, in particular to a method for allocating frequency spectrum of a cognitive radio network based on a cuckoo search algorithm. Background technique [0002] At present, with the rapid development of wireless communications, the contradiction between supply and demand of spectrum resources has become increasingly prominent. Cognitive radio technology came into being. In a cognitive radio network, cognitive users can "opportunistically" access the idle spectrum of authorized users, which effectively improves the utilization of wireless spectrum resources. Spectrum allocation is one of the key technologies in cognitive radio, which mainly solves how to efficiently allocate idle spectrum resources to cognitive users under a certain allocation target after sensing the idle spectrum. [0003] Most of the spectrum allocation models are based on some classic mathematical theories and micr...

Claims

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Application Information

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IPC IPC(8): H04W16/10
CPCH04W16/10
Inventor 肖海林刘彩丽胡悦王成旭张文娟侯嘉
Owner ZHEJIANG UNIVIEW TECH
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