Pseudo-diameter elimination method based on neural network in wireless channel measurement

Abstract

The invention belongs to the technical field of channel measurement, and discloses a pseudo-diameter elimination method based on a neural network in wireless channel measurement, and the method comprises the steps: constructing a measurement data matrix through employing a time delay power spectrum collected by channel measurement; searching suspicious time delay windows with pseudo-diameters, andremoving data of the time delay windows; constructing a neural network by utilizing the data of the time delay window without the pseudo-diameter; inputting all time delay window labels to the neuralnetwork, and performing training to obtain a new time delay power spectrum data matrix; judging whether the pseudo-diameter of the new data matrix is eliminated or not, outputting a reconstructed time delay power spectrum if the pseudo-diameter of the new data matrix is eliminated, otherwise, continuing to search for the pseudo-diameter and eliminating the pseudo-diameter; and performing a verification test on the pseudo-diameter elimination technology based on the neural network. The pseudo-diameter elimination method based on the neural network in channel measurement provided by the invention can effectively eliminate the pseudo-diameter in the time delay power spectrum and restore the real time delay power spectrum, thereby not only reducing the workload in the channel measurement process, but also ensuring the reliability of the measurement result.

Description

Technical field [0001] The present invention belongs to the technical field of channel measurement, and in particular relates to a method for eliminating false path based on neural network in wireless channel measurement. Background technique [0002] At present, the closest existing technology: In the channel measurement, the acquisition of the power delay profile (PDP) is an important link. The radio signal can be obtained through the delay power spectrum after scattering, reflection, and diffraction in the wireless channel. The time and intensity of the formed multipath component reaching the receiving end can obtain important channel time domain parameters such as Delay Spread (DS) and Coherent Bandwidth (CB). At present, PDP is obtained by using a channel sounder (Channel Sounder) including a transmitter and a receiver. It is inevitable that the signal will be affected by the system performance when it passes through the channel measurement system. A noteworthy effect is t...

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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