A channel selection method based on spectrum prediction and perceptual fusion

A spectrum prediction and channel selection technology, applied in wireless communication, transmission monitoring, electrical components, etc., can solve problems such as user transmission conflicts and users missing the opportunity to use the channel, so as to improve detection performance, reduce spectrum sensing time, reduce The effect of miscalculation

Inactive Publication Date: 2018-12-18
ARMY ENG UNIV OF PLA
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Problems solved by technology

[0003] Both spectrum prediction and spectrum prediction have the problem of missed detection and false alarm. Missed detection means that the channel has been occupied but not predicted or detected. Using this channel will conflic

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  • A channel selection method based on spectrum prediction and perceptual fusion
  • A channel selection method based on spectrum prediction and perceptual fusion
  • A channel selection method based on spectrum prediction and perceptual fusion

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[0037] Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.

[0038] combine figure 1 , the principle of the channel selection method based on spectrum prediction and sensing fusion in the present invention is: by predicting the future occupancy of the channel, unusable channels are removed from the sensing queue, reducing the spectrum sensing time; and the results of the perception stage, reduce the misjudgment caused by missed detection and false alarm to spectrum decision-making, and improve the detection performance of the channel state. The specific steps are as follows:

[0039] Step 1, the present invention is applicable to the multi-channel situation, assuming that there are N chan...

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Abstract

The invention discloses a channel selection method based on spectrum prediction and perception fusion, which performs statistical estimation on three parameters of average occupancy probability Po, average remaining communicable time length Tl and average signal-to-noise ratio SNR of each channel in channel set C based on historical data of spectrum monitoring. The detection probability of each channel in the channel set C in the prediction stage is obtained by frequency spectrum prediction. By predicting the occupancy of the channel in the future, the unavailable channels are excluded from the sensing queue and the spectrum sensing time is reduced. After the spectrum sensing is completed, the results of spectrum sensing and spectrum prediction are fused according to certain rules, which can reduce the misjudgment caused by missed detection and false alarm, improve the detection performance of channel state, and quickly find high-quality available channels for the link establishment process.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a spectrum prediction and perception and optimal channel selection method, in particular to a channel selection method based on spectrum prediction and perception fusion. Background technique [0002] Spectrum prediction and spectrum sensing are two main methods to obtain the spectrum situation. Simply put, spectrum sensing obtains the current spectrum state through different signal detection methods, while spectrum prediction is to mine the internal correlation of historical spectrum data or regularity to obtain the future state of the spectrum in advance. [0003] There are problems of missed detection and false alarms in both spectrum prediction and spectrum prediction. Missed detection means that the channel has been occupied but not predicted or detected. Using this channel will conflict with the transmission of the channel-occupied user. False alarm means that the chan...

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Application Information

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IPC IPC(8): H04B17/382H04W72/08
CPCH04B17/382H04W72/542
Inventor 王金龙江汉徐以涛徐煜华郑学强
Owner ARMY ENG UNIV OF PLA
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