Method and device for obtaining electromagnetic sensitivity index

Abstract

The invention discloses a method for obtaining an electromagnetic sensitivity index, which is specifically used for obtaining the electromagnetic sensitivity index of a wireless communication system, and comprises the following steps: obtaining a plurality of sensitivities of a receiver under different interference signals; when the receiving power of the receiver is at each of the plurality of sensitivities, obtaining a mutual information value based on the amplitude probability distribution of the interference signal of the receiver and the covariance matrix of the wireless channel response; and obtaining an electromagnetic sensitivity index of the wireless communication system according to the mutual information value corresponding to each sensitivity. According to the method provided by the embodiment of the invention, the relatively stable mutual information value of the receiver under different interference signals is obtained, and the electromagnetic sensitivity index of the receiver is obtained by using the mutual information value. Due to the fact that the change of the mutual information value along with the type and intensity of the interference signal is small, the method provided by the embodiment of the invention can obtain the fixed electromagnetic sensitivity index of the receiver through the stable mutual information value.

Description

technical field [0001] The present application relates to the electromagnetic field, in particular to a method and device for obtaining an electromagnetic susceptibility index. Background technique [0002] With the development of communication technology, some wireless communication systems have many sources of interference signals and complex characteristics. Electromagnetic susceptibility is the study of the ability of a device, equipment or system to avoid degradation in performance in the presence of electromagnetic disturbances from interfering signals. [0003] At present, the evaluation of the electromagnetic susceptibility of wireless communication systems is usually evaluated by the sensitivity of the receiver. However, when the interference signal of the wireless communication system is different, the sensitivity of the receiver will change greatly with the type and strength of the interference signal, so this evaluation method is not suitable for some interferen...

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Problems solved by technology

However, when the interference signal of the wireless communication system is different, the sensitivity of the receiver will change greatly with the type and strength of the interference signal, so this evaluation method is not suitable for some interference signals with many sources and complex characteristics. wireless communication system

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