Shortwave channel sparsification method and device and computer storage medium

Abstract

The embodiment of the invention discloses a short wave channel rarefaction method and device and a computer storage medium. The method comprises the following steps: acquiring a channel impulse response of unknown data in a received signal through a set estimation strategy based on a first training sequence and a known second training sequence in the received signal; Based on the channel impulse response of unknown data in the received signal, obtaining a description parameter for representing the signal-to-noise ratio of the channel; Determining a channel pulse response threshold value from two alternative threshold values by using the amplitude square of the channel pulse response of unknown data in the received signal according to the numerical relationship between the description parameter and a set error threshold value; And based on the numerical relationship between the amplitude square of each tap coefficient in the channel impulse response of the unknown data in the received signal and the channel impulse response threshold value, carrying out sparsification on the channel impulse response of the unknown data in the received signal to obtain a sparsified channel impulse response value.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method, device and computer storage medium for thinning short-wave channels. Background technique [0002] Shortwave communication is not only the earliest and widely used wireless communication method, but also is still an important means of medium and long-distance wireless communication. In order to achieve long-distance communication, the radio wave propagation in the short-wave frequency band is mainly transmitted through sky waves, that is, the long-distance propagation of radio waves is carried out by relying on the reflection of the ionosphere by virtue of the characteristics of the ionosphere that cannot be permanently destroyed. [0003] The short-wave channel based on the ionosphere for short-wave communication has strong invulnerability, but at the same time there are serious multipath effects and fading; therefore, when the signal propagates in the a...

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Problems solved by technology

[0006] Through the above channel estimation algorithm, the shortwave wireless multipath channel in the shortwave communication system can be estimated; however, due to the large number of multipath components of the shortwave wireless multipath channel, it is necessary to perform channel estimation on all multipath components , therefore, it will cause an increase in the amount of calculation and increase the implementation complexity of channel estimation

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