Cognitive heterogeneous network power distribution method based on cooperative spectrum sensing and disturbance constraints

A cognitive heterogeneous network and cooperative spectrum sensing technology, applied in the field of cognitive heterogeneous networks, can solve problems such as low spectrum utilization efficiency and low accuracy of idle channel detection

Inactive Publication Date: 2017-09-15
广东财经大学华商学院
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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the current heterogeneous wireless network has low accuracy of idle channel detection and low spectrum utilization

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  • Cognitive heterogeneous network power distribution method based on cooperative spectrum sensing and disturbance constraints
  • Cognitive heterogeneous network power distribution method based on cooperative spectrum sensing and disturbance constraints
  • Cognitive heterogeneous network power distribution method based on cooperative spectrum sensing and disturbance constraints

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Embodiment Construction

[0063] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0064] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0065] Such as figure 1 As shown, the cognitive heterogeneous network power allocation method based on cooperative spectrum sensing and interference constraints provided by the embodiment of the present invention includes the following steps:

[0066] S101: The cognitive heterogeneous network system model uses multiple Center Secondary Users (CSU) nodes to assist other nodes in spectrum sensing, and introduces an energy detection threshold to improve the accuracy of idle channel detec...

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Abstract

The invention belongs to the technical field of a cognitive heterogeneous network and discloses a cognitive heterogeneous network power distribution method based on cooperative spectrum sensing and disturbance constraints. A cognitive heterogeneous network system model cooperates with other nodes to carry out spectrum sensing by use of multiple center secondary user nodes, a CSU cooperates with other PSU nodes to perform spectrum sensing, and an energy detection threshold is introduced, such that while the idle channel detection accuracy is improved, detection energy consumption is saved; by use of a joint operation equation for maximizing a data rate, optimal emission power is distributed to nodes under restricted constraints of disturbance power, such that the disturbance degree is reduced and the network throughput is optimized; and an experimental simulation result indicates that compared to a cooperative spectrum sensing distribution strategy algorithm based on clustering and an energy sensing competitive power distribution algorithm based on QoS constraints, the network throughput is improved by 3.4% and 1.5% respectively, and the average spectrum utilization rate is improved by 9.3% and 7.4% respectively.

Description

technical field [0001] The invention belongs to the technical field of cognitive heterogeneous networks, and in particular relates to a cognitive heterogeneous network power allocation method based on cooperative spectrum sensing and interference constraints. Background technique [0002] The future wireless communication system is an open and heterogeneous wireless network communication system, which can support users to dynamically access the most suitable wireless network by organically integrating factors such as personal preference and network performance. Due to the rapid increase in the number of existing heterogeneous network services and low utilization efficiency, in the case of a large number of users sharing bandwidth, the bandwidth limitation problem is very serious for the high throughput requirements of real-time multimedia communication (such as high-definition video transmission). In order to improve the efficiency of wireless resource utilization and manage...

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Application Information

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IPC IPC(8): H04W52/24H04W52/26H04B17/382
CPCH04B17/382H04W52/244H04W52/267
Inventor 叶仕通万智萍温凯峰黄林伟
Owner 广东财经大学华商学院
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