A Spectrum Sensing Method for Phototropism Based on Auxin Concentration

Abstract

The invention discloses a phototropism spectrum sensing method based on auxin concentration. According to the method, a phototropism spectrum sensing algorithm module based the auxin concentration is embedded in a signal processing unit to achieve spectrum sensing. When spectrum sensing is carried out by sensing equipment, initial variable setting is carried out firstly, then definition and calculation are carried out on the auxin concentration according to a monitoring frequency range, a frequency resolution and a sampling speed, an objective optimization function is defined according to a phototropism growth principle, the minimum value of the objective function is used as a convergence objective, the auxin concentration distribution is adjusted according to the monitoring objective information, spectrum sensing data and an auxin concentration calculation formula, and optimum sensing is achieved. Compared with the prior art, the phototropism spectrum sensing method based on the auxin concentration is designed according to the phototropism growth process of plants, the definition of the auxin concentration is introduced for optimizing a weighting factor, and the sensing speed is improved. The phototropism spectrum sensing method based on the auxin concentration can be applied to but not restricted to the field of cognitive radio, radio-frequency spectrum monitoring and other radio fields needing spectrum sensing.

Description

Technical field [0001] The invention relates to a radio spectrum sensing method, in particular to a phototropism spectrum sensing method based on the concentration of auxin. Background technique [0002] The growth of wireless communication services has led to the congestion of unlicensed spectrum resources, which has led to the birth of cognitive radio technology. Cognitive radio technology enables unlicensed users to use the spectrum resources of authorized users by dynamic sensing and flexible access to spectrum resources. , Which greatly improves the spectrum utilization rate, and is recognized as the core technology of the next-generation wireless communication network. In cognitive radio, the primary task is to perceive the spectrum environment and detect spectrum holes. The cognitive user’s perception ability determines whether the cognitive radio system has stronger adaptability, wider bandwidth, fewer conflicts and more High spectrum utilization. The sensing technology...

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Problems solved by technology

[0003] Publication No. CN 103051403 A discloses a spectrum sensing method based on multiple MWC distributed sub-Nyquist sampling joint reconstruction, which solves the spectrum sensing of single MWC distributed sub-Nyquist sampling joint reconstruction Under the condition of low signal-to-noise ratio, the success rate of spectrum sensing is low, and it is difficult to overcome the shadow effect and hidden terminal problems

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