A wireless channel testing method and device

Abstract

An embodiment of the invention provides a wireless channel test method and a wireless channel test device. The wireless channel test method includes: acquiring a Laplace's wavelet signal with sine characteristics, transmitted through a wireless channel and recording receipt time of the Laplace's wavelet signal; performing analog-digital conversion on the Laplace's wavelet signal to acquire a first digital signal after conversion; according to the receipt time of the Laplace's wavelet signal, performing a matching pursuit algorithm on the first digital signal converted through a pre-established wavelet dictionary corresponding to the Laplace's wavelet signal with the sine characteristics and by the aid of a matching pursuit algorithm to acquire delay values and attenuation coefficients of multi-diameter components. The first digital signal converted of the Laplace's wavelet signal is subjected to matching pursuit algorithm through the pre-established wavelet dictionary, the accurate attenuation coefficients and delay values of the multi-diameter components of the wireless channel can be directly acquired, affection on test results by artificial analysis is avoided, and test error is lowered.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for testing a wireless channel. Background technique [0002] At present, mobile communication is more and more widely used, and the environment used is more and more complex. Since mobile communication is closely related to human activity environment, in order to improve communication quality, it is necessary to study the propagation characteristics of wireless channels in different environments. In addition, positioning service has also become an important aspect of intelligent communication. The existing positioning methods reduce positioning errors by eliminating non-line-of-sight errors. In order to reduce positioning errors, it is necessary to understand the characteristics of wireless channels and adopt effective method to reduce the positioning error. [0003] The traditional method of testing the wireless channel is: at the transmittin...

AI Technical Summary

Problems solved by technology

[0003] The traditional method of testing the wireless channel is: at the transmitting end, a single pulse signal with limited bandwidth is generated, at the receiving end, an oscilloscope or a spectrum analyzer records the arriving signal, and then through manual analysis, the test of the wireless channel is obtained The result is the attenuation and delay of the wireless channel. However, the test results obtained by this method are estimated values, and the test error is relatively high.

Images