A verification system for Rayleigh-Butterworth fading channel

Abstract

The invention provides a verification system for a Rayleigh-Butterworth fading channel. The verification system comprises a signal generation module, a channel generation module and a channel verification module; the signal generation module generates a sine wave signal with appropriate output frequency and output power; the channel generation module generates a simulation model of the Rayleigh-Butterworth fading channel based on the generated sine wave signal; and the channel verification module performs verification of time-domain fading characteristics, first order statistical property andsecond order statistical property on the generated simulation model of the Rayleigh-Butterworth fading channel by using a verification method based on a theory of testing hypothesis in the statistics.According to the verification system for the Rayleigh-Butterworth fading channel provided by the invention, a maximum likelihood estimation method is used for obtaining key parameters of Rayleigh distribution and uniform distribution, and the significance level can be automatically adjusted according to the difference in accuracy requirements. On the basis of qualitative comparison, a verification result is quantized, so that the verification result is clear and visual.

Description

technical field [0001] The invention relates to the field of channel modeling and simulation in wireless communication, and more specifically relates to a verification system for the performance of a Rayleigh-Butterworth fading channel simulation model. Background technique [0002] Rayleigh fading channel model is the most important and basic simulation model of wireless communication channel. The flat fading channel in the wireless channel is basically modified on the basis of the Rayleigh channel model. For example, the Rice channel, which is also widely used, can be realized by simply adding a DC component on the basis of the Rayleigh channel, and the frequency Selective fading channels are basically the result of the superposition of several flat fading channels. [0003] In a small-scale flat fading channel, the receiver receives multipath signals from different paths due to the constant motion of the moving body. The speed of the mobile station will cause each multi...

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Problems solved by technology

[0004] At present, the modeling and verification methods of Rayleigh fading channels based on different Doppler power spectra are only a simple and intuitive comparison between theoretical values ​​and simulation values, and cannot scientifically and rigorously verify whether the model is accurate and effective. Therefore, a A set of reliable and effective verification technical solutions to verify Rayleigh fading channels with different Doppler power spectra

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