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Perceptual information fusion method based on energy detection

A technology for sensing information and energy detection, applied in the field of communication, can solve problems such as high false alarm error probability, high missed detection error probability, and low false alarm error probability

Inactive Publication Date: 2016-01-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

Among them, the AND rule has a lower false alarm error probability and a higher missed detection error probability; the OR rule can effectively reduce the missed detection error probability, but it will lead to a higher false alarm error probability; and K-out-of-N The law can achieve a more compromised false alarm and missed detection error probability by adjusting the K value

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  • Perceptual information fusion method based on energy detection
  • Perceptual information fusion method based on energy detection
  • Perceptual information fusion method based on energy detection

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Embodiment Construction

[0052] The technical solution of the present invention will be described in detail below in conjunction with the embodiments and the drawings.

[0053] In order to verify the performance of the perceptual information fusion mechanism based on energy detection, the present invention performs a performance comparison with the traditional AND, OR and K-out-of-N rules in a wireless channel environment including path loss, shadow and small-scale fading.

[0054] Perception information fusion mechanism based on AND and OR rules:

[0055] In the perception fusion based on the AND rule, only when the local perception scanning results of all cognitive nodes participating in cooperative perception are that a certain authorized channel is busy, the fusion result is that the authorized channel is occupied; as long as there is a local cognitive node The perceptual scan result is that the channel is not occupied, and the fusion result is that the channel is not occupied. Then the detection probab...

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Abstract

The invention belongs to the technical field of communications, and especially relates to a cooperative spectrum sensing implementation scheme based on a cognitive radio technology in a wireless communication system. The invention provides a perceptual information fusion method based on energy detection, wherein after local spectrum sensing based on energy detection of all cognitive nodes is completed, a fusion center and all users participating in spectrum sensing cognition adopt the perceptual information fusion method provided by the invention to realize fusion of perceptual information, therefore, the accuracy of a spectrum sensing result and the scope of spatial application can be improved, the time overhead of reporting a local perception judgment result to the fusion center by all cognitive nodes can be reduced and the cooperative sensing performance better than a traditional cooperative perception fusion rule can be obtained.

Description

Technical field [0001] The invention belongs to the field of communication technology, and in particular relates to a cooperative spectrum sensing implementation scheme based on cognitive radio technology in a wireless communication system. Background technique [0002] With the rapid development of mobile wireless communication technology and the continuous emergence and popularization of broadband wireless communication services, the remaining available idle wireless spectrum resources are becoming more and more limited. At the same time, the utilization rate of spectrum resources in most wireless communication frequency bands that have been formally allocated by radio spectrum management agencies is still very low. According to the measurement by the US authority, more than 70% of the allocated wireless spectrum resources are not fully utilized by the service provider. This situation is obviously in contradiction with the shortage of spectrum resources that has received wides...

Claims

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Application Information

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IPC IPC(8): H04W16/14
CPCY02D30/70
Inventor 谭雪松汪洁然
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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