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OTFS signal processing method and device

A signal processing and signal technology, applied in the direction of digital transmission system, error prevention, electrical components, etc., can solve the problems that the QRD method is difficult to use well, and achieve the effect of facilitating QRD demodulation, reducing complexity, and good sparse characteristics

Active Publication Date: 2022-04-15
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0025] The invention provides an OTFS signal processing method and device to solve the technical problem that the QRD method is difficult to be well utilized in the existing OTFS waveform system

Method used

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  • OTFS signal processing method and device
  • OTFS signal processing method and device
  • OTFS signal processing method and device

Examples

Experimental program
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Effect test

no. 1 example

[0070] The present embodiment provides a kind of OTFS signal processing method, and this method is applicable to the OTFS waveform system that the receiving end adopts QRD detection; figure 2 As shown, in this embodiment, a channel interleaving module is added after OFDM modulation at the transmitting end, and a corresponding deinterleaving module is added before OFDM demodulation at the receiving end, so that the channel in the delay-Doppler domain has a good mathematical Format. interleaving module and deinterleaving module such as figure 2 shown in the dotted box. Based on this, the OTFS signal processing method includes the following processing procedures:

[0071] Inverse Fourier transform is performed on multiple sets of frequency domain data at the sending end to obtain multiple sets of time domain data, and an interleaving operation is performed on multiple sets of time domain data; wherein, the interleaving operation is: the multiple sets of time domain data are d...

no. 2 example

[0092] The present embodiment provides a kind of OTFS signal processing device, and this device comprises following module:

[0093] The interleaving module is configured to perform an interleaving operation on the multiple sets of time domain data obtained by the transmitting end after performing inverse Fourier transform on multiple sets of frequency domain data at the transmitting end; wherein, the interleaving operation is: the multiple sets of time domain data Combining the domain data into a two-dimensional matrix by row, extracting the two-dimensional matrix by column, and sending it; or combining the multiple sets of time domain data by column into a two-dimensional matrix, and extracting the two-dimensional matrix by row, to send;

[0094] A deinterleaving module, configured to perform a deinterleaving operation on the received signal at the receiving end; wherein, the receiving end obtains the original signal sent by the sending end based on the data obtained through...

no. 3 example

[0097] This embodiment provides an electronic device, which includes a processor and a memory; at least one instruction is stored in the memory, and the instruction is loaded and executed by the processor, so as to implement the method of the first embodiment.

[0098] The electronic device may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) and one or more memories, wherein at least one instruction is stored in the memory, so Said instruction is loaded by processor and executes said method

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Abstract

The invention discloses an OTFS signal processing method and an OTFS signal processing device. The OTFS signal processing method comprises the following steps: performing interleaving operation on multiple groups of time domain data obtained after inverse Fourier transform at a sending end; wherein the interleaving operation comprises the following steps: combining the multiple groups of time domain data into a two-dimensional matrix according to rows, extracting the two-dimensional matrix according to columns, and sending the two-dimensional matrix; or combining the multiple groups of time domain data into a two-dimensional matrix according to columns, extracting the two-dimensional matrix according to rows, and sending the two-dimensional matrix; performing de-interleaving operation on the received signal at the receiving end, and obtaining an original signal sent by the sending end based on data obtained by de-interleaving; wherein the de-interleaving operation is reverse operation of the interleaving operation. According to the OTFS signal processing scheme provided by the invention, the channel matrix can keep a good sparse characteristic, the QRD demodulation is facilitated, and the complexity is reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to an OTFS signal processing method and device. Background technique [0002] The transmission channel of the wireless signal has multipath effect, that is, after the signal is sent from the sending end, such as the base station, before reaching the receiving end, such as the mobile phone, there may be multiple transmission paths in the middle, such as between the base station BS and the user equipment / terminal UE There are multiple reflection or direct paths at the same time, so that the signal reaching the UE is the superposition of multiple paths. Each path may correspond to different delay and phase, and attenuation. The superposition of time delay, phase, and attenuation of different paths constitutes the wireless link between the entire transmission and reception. The multipath effect is manifested as frequency selective fading in the frequency domain. That i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L1/00
Inventor 邵华张海君张文宇马晖
Owner UNIV OF SCI & TECH BEIJING
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