A Neural Network-based False Path Elimination Method in Wireless Channel Measurement

Abstract

The invention belongs to the technical field of channel measurement, and discloses a neural network-based false path elimination method in wireless channel measurement, which uses the delay power spectrum collected by channel measurement to construct a measurement data matrix; searches for suspicious time delay windows with false paths, and eliminates The data of these time-delay windows; use the data of time-delay windows without false paths to construct a neural network; input all time-delay window labels to the neural network, and train to obtain a new time-delay power spectrum data matrix; judge whether the new data matrix has been Eliminate false paths, if the elimination is completed, output the reconstructed delay power spectrum, otherwise continue to search for false paths and eliminate them; verify and test the neural network-based false path elimination technology. The false path elimination method based on the neural network in the channel measurement provided by the present invention can effectively eliminate the false paths in the delay power spectrum and restore the real delay power spectrum, thereby not only reducing the workload in the channel measurement process, but also The reliability of the measurement results is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of channel measurement, in particular to a neural network-based false path elimination method in wireless channel measurement. Background technique [0002] At present, the closest existing technology: In channel measurement, obtaining the power delay profile (Power Delay Profile, PDP) is an important link, through which the radio signal can be obtained through scattering, reflection, and diffraction in the wireless channel The arrival time and intensity of the multipath components formed at the receiving end can then be used to obtain important channel time-domain parameters such as delay spread (Delay Spread, DS) and coherent bandwidth (Coherent Bandwidth, CB). Currently, the PDP is obtained using a channel measurement system (Channel Sounder) including a transmitter and a receiver. It is unavoidable that the signal will be affected by the system performance during the process of passing through the chann...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the problems existing in the existing technology are: the method of adjusting the system configuration adopted in the existing channel measurement is cumbersome and requires the cooperation of the transmitting end and the receiving end. False paths, reducing test efficiency

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