Signal processing method and device, equipment and storage medium

A signal processing and displacement technology, applied in the field of communication, can solve the problems of inability to realize signal processing at the sending end or receiving end, low signal processing efficiency, etc.

Pending Publication Date: 2020-09-11
北京东土军悦科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the sampling multiple is different from the number of channels, it is impossible to perform signal processing at the sending end or receiving end, and the signal processing efficiency is low

Method used

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  • Signal processing method and device, equipment and storage medium
  • Signal processing method and device, equipment and storage medium
  • Signal processing method and device, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] When the sending end is sending signals, its schematic diagram is as follows figure 1 shown. Suppose the sender has N channels, s i (m) represents the data in channel i at time m. Exemplary, s 0 (m) indicates the data in channel 0 at time m, s 1 (m) indicates the data in channel 1 at time m, s N-1 (m) represents data in channel N-1 at time m. Each channel is up-sampled separately, and then filtered using a low-pass filter h(n). After filtering, the frequency spectrum of each channel is shifted, and the sampled signal in channel i is according to Perform spectrum shifting, for example, channel 0 according to For spectrum shifting, channel 1 follows For spectrum shifting, channel N-1 follows Perform spectrum shifting, and after spectrum shifting, get the spectrum shifting result x i (m), for example, x i (m) represents the data in channel i at time m. Exemplary, x 0 (m) represents the spectrum shift result in channel 0 at time m, x 1 (m) represents the s...

Embodiment 2

[0063] When the receiving end is receiving signals, its schematic diagram is as follows: image 3 shown. After the receiving end receives the signal x(n), according to the number of channels N in the N same channels according to Perform spectrum shifting. The sampled signal in channel i follows Perform spectrum shifting, for example, channel 0 according to For spectrum shifting, channel 1 follows For spectrum shifting, channel N-1 follows Perform spectrum shifting. Filter through the low-pass filter h(n), and then down-sample the filtered result to obtain the result data x i (m). Exemplary, x 0 (m) represents the result data in channel 0 at time m, x 1 (m) represents the result data in channel 1 at time m, x N-1 (m) represents the resulting data in channel N-1 at time m. At present, only the case where the downsampling multiple is equal to the number of channels is usually considered. If the sampling multiple is different from the number of channels, signal pro...

Embodiment 3

[0084] Figure 5 It is a schematic structural diagram of a signal processing device provided in Embodiment 3 of the present application. The device is applicable to a digital signal sending end, and the device may be located in a device that performs signal sending. The number of channels N at the sending end is K times the upsampling multiple L1, and K is an integer greater than or equal to 1. The device includes: a first inverse Fourier transform module 310, a first displacement module 320, a first filtering module 330, an upsampling module 340 and a delay adding module 350 .

[0085] The first inverse Fourier transform module 310 is configured to perform discrete inverse Fourier transform (IDFT) on the data in the N channels at the current moment m to obtain a transform result.

[0086] The first displacement module 320 is used to determine the number of displacements K according to the number of channels N and the upsampling multiple L1; determine the current displacement...

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Abstract

The invention discloses a signal processing method and device, equipment and a storage medium, and the method comprises the steps out of performing the inverse discrete Fourier transform (IDFT) of data in N channels at a current moment m by a transmitting terminal, and obtaining a transformation result; determining a displacement frequency K according to the channel number N and the up-sampling multiple L1; determining the current displacement according to the up-sampling multiple L1, the channel number N and the current moment m; during each displacement, performing cyclic left shift on the transformation result according to the current displacement to obtain a displacement result; using a filter subjected to multiphase decomposition and K-time interpolation for filtering in each channel;performing L1-time interpolation on the filtered result in each channel, and performing time delay addition on the data of each channel to obtain output data. Through multiple times of displacement,signal processing with a small sampling multiplying power L matched with a high channel number N is achieved, and the signal processing efficiency is improved.

Description

technical field [0001] The embodiments of the present application relate to signal processing technologies in the communication field, and in particular, to a signal processing method, device, device, and storage medium. Background technique [0002] With the development of communication technology, digital signals are transmitted between the transmitter and receiver. The transmitting end and the receiving end have multiple channels, and the signal is sampled (up-sampled or down-sampled) through multiple channels, but the required sampling multiple needs to be the same as the number of channels. If the sampling multiple is different from the number of channels, signal processing at the sending end or receiving end cannot be realized, and the signal processing efficiency is low. Contents of the invention [0003] The present application provides a signal processing method, device, device, and storage medium, so as to improve signal processing efficiency. [0004] In the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/14H04B1/04H04B1/16
CPCG06F17/141H04B1/04H04B1/16
Inventor 黄志科
Owner 北京东土军悦科技有限公司
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