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Interleaving method, system and equipment based on cyclic shift and computer storage medium

A computer program and equipment technology, applied to equipment and computer storage media, systems, and the field of cyclic shift-based interleaving methods, can solve the problems of continuity, frequency-selective fading, and poor interleaving effect that transmission information is not easy to correct, and achieve The effect of increasing communication overhead and improving interleaving performance

Pending Publication Date: 2022-04-01
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a cyclic shift-based interleaving method, system, device and computer-readable storage medium for solving the problem of signal transmission due to channel fading in the prior art. It will lead to frequency selective fading and time selective fading, resulting in continuous errors in the transmission information that are not easy to correct in the channel, and poor interleaving effect

Method used

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  • Interleaving method, system and equipment based on cyclic shift and computer storage medium
  • Interleaving method, system and equipment based on cyclic shift and computer storage medium
  • Interleaving method, system and equipment based on cyclic shift and computer storage medium

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Embodiment 1

[0031] This embodiment provides a cyclic shift-based interleaving method, which is characterized in that it includes:

[0032] For a two-dimensional interleaving block with M rows and N columns, the cyclic shift value for row / column cyclic shift is determined according to the principle of maximizing the minimum interleaving distance, so that the data originally belonging to the same column / row has the two-dimensional minimum before and after interleaving. The distance is maximized; among them, M is greater than or equal to 1, and N is greater than or equal to 1.

[0033] The cyclic shift-based interleaving method provided by this embodiment will be described in detail below with reference to figures. The cyclic shift-based interleaving method described in this embodiment is used for communication data, and the communication data refers to encoded data streams before entering the wireless communication channel for transmission.

[0034] see Figure 1A , which is a schematic fl...

Embodiment 2

[0059] This embodiment provides a cyclic shift-based interleaving system, including:

[0060] The cyclic shift module, the cyclic shift module, is used to determine the cyclic shift value of the row / column cyclic shift based on the principle of maximizing the minimum interleaving distance for the two-dimensional interleaving block of M rows and N columns, and according to each row / column cycle The shift value cyclically shifts each row / column of the two-dimensional interleaving block; wherein, M is greater than or equal to 1, and N is greater than or equal to 1. The cyclic shift-based interleaving system provided by this embodiment will be described in detail below with reference to figures. see image 3 , shows a schematic structural diagram of a cyclic shift-based interleaving system in an embodiment. Such as image 3 As shown, the cyclic shift-based interleaving system 3 includes a reading module 31 and a cyclic shift module 32 .

[0061] The reading module 31 is used f...

Embodiment 3

[0071] A cyclic shift-based interleaving device provided in this embodiment, the interleaving device includes: a processor, a memory, a transceiver, a communication interface or / and a system bus; the memory and the communication interface communicate with the processor and the transceiver through the system bus Connect and complete mutual communication, the memory is used to store computer programs, the communication interface is used to communicate with other devices, the processor and transceiver are used to run computer programs, so that the interleaving device performs the cyclic shift-based The individual steps of the interleaving method.

[0072] The system bus mentioned above may be a Peripheral Component Interconnect (PCI for short) bus or an Extended Industry Standard Architecture (EISA for short) bus or the like. The system bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in the figure, but...

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Abstract

The invention provides an interleaving method, system and device based on cyclic shift and a computer storage medium, and the method comprises the steps: determining a cyclic shift value of cyclic shift of each row / column based on a minimum interleaving distance maximization principle for M rows and N columns of two-dimensional interleaving blocks, performing cyclic shift on each row / column of the two-dimensional interleaving block according to each row / column cyclic shift value; wherein M is greater than or equal to 1 and N is greater than or equal to 1. According to the interleaving method, system and device based on cyclic shift and the computer storage medium, under the condition that the maximum two-dimensional interleaving distance is determined, communication overhead is not increased, and meanwhile data are scrambled as uniformly as possible through a simple and convenient method, so that the interleaving performance can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a cyclic shift-based interleaving method, system, equipment and computer storage medium. Background technique [0002] In a wireless communication system, since channel fading will lead to frequency selective fading and time selective fading in the process of signal transmission, the transmission information will have continuous errors that are not easy to correct in the channel, especially between adjacent information units. The probability of error is relatively high. [0003] Therefore, in order to improve the error tolerance rate of the system, as far as possible to achieve error-free transmission at the receiving end, time interleaving technology is used to resist channel interference. It is an important link to solve the stability of the communication system and the accuracy of data to change the continuous errors between adjacent information units into indepe...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 李睿嘉田金凤卞鑫李明齐
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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