WO2019029238A1 - Procédé et dispositif d'entrelacement pour entrelacer des données - Google Patents

Procédé et dispositif d'entrelacement pour entrelacer des données Download PDF

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Publication number
WO2019029238A1
WO2019029238A1 PCT/CN2018/089091 CN2018089091W WO2019029238A1 WO 2019029238 A1 WO2019029238 A1 WO 2019029238A1 CN 2018089091 W CN2018089091 W CN 2018089091W WO 2019029238 A1 WO2019029238 A1 WO 2019029238A1
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Prior art keywords
group
codewords
interleaving
segments
codeword
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PCT/CN2018/089091
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English (en)
Chinese (zh)
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王加庆
任兆丰
陈佩瑶
白宝明
孙韶辉
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电信科学技术研究院有限公司
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Priority claimed from CN201710707150.XA external-priority patent/CN109391366A/zh
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Publication of WO2019029238A1 publication Critical patent/WO2019029238A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method and an interleaver for interleaving data.
  • Existing interleaving schemes mainly include a packet interleaver, an irregular interleaver, and a random interleaver.
  • the packet interleaver also called the regular interleaver, is an interleaver applied to channel coding and is also a general interleaver.
  • Irregular interleavers are mostly evolved from packet interleavers, such as diagonal interleavers (row write diagonal reads), S-type interleavers, triangular interleavers, etc.
  • the random interleaver uses a random seed to generate an interleaving pattern, and its performance is superior.
  • the patterns generated for different code length code rates are different and the pattern needs to be saved in advance, the implementation is complicated.
  • the present invention provides a method for interleaving data and an interleaver to solve the problem that the random interleaver existing in the prior art has better performance, but the resources occupied by the interleaving pattern are saved in advance. .
  • a method for interleaving data according to an embodiment of the present application includes:
  • Each of the obtained sequences is output by serial-to-parallel conversion.
  • the dividing the coded codeword into multiple segments including:
  • the coded codeword is equally divided into multiple segments.
  • the method further divides the coded codeword into multiple segments, including:
  • Each column of code words output by the segment interleaver is taken as a segment.
  • the method further divides the coded codeword into multiple segments, including:
  • the coded codewords are equally divided into a plurality of segments according to the order of the encoded codewords.
  • the method further divides the coded codeword into multiple segments, and further includes:
  • padding bits are added to the encoded codeword so that the number of codewords included in each segment is the same.
  • the dividing the coded codeword into multiple segments including:
  • the coded codeword is divided into a plurality of segments according to the order of the encoded codewords.
  • the grouping the obtained multi-segment codewords includes:
  • the value obtained by modulating the number of segments of the obtained codeword in order is used as the group number of the segment;
  • the interleaving is performed on each group of code words in a manner of row write column readout, including:
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout;
  • the interleaver depth values corresponding to each group of codewords are the same or different.
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout, including:
  • any set of codewords if the length of the group of codewords is not a multiple of the corresponding interleaving depth value of the group, padding bits are added at the end of the group of codewords, so that the group of codeword lengths is the corresponding interleaving depth value of the group. Multiples.
  • the interleaving is performed on each group of code words in a manner of row write column readout, including:
  • Each group of code words is interleaved in a parallel manner in a manner of row write column readout.
  • An embodiment of the present application provides an interleaver, where the interleaver includes:
  • a segmentation module configured to divide the coded codeword into multiple segments
  • a grouping module configured to group the obtained multi-segment codewords
  • An interleaving module configured to interleave each group of code words in a manner of row write column readout, to obtain a sequence corresponding to each group of codewords
  • An output module for outputting each of the obtained sequences by serial-to-parallel conversion.
  • the segmentation module is specifically configured to:
  • the coded codeword is equally divided into multiple segments.
  • the segmentation module is specifically configured to:
  • Each column of code words output by the segment interleaver is taken as a segment.
  • the segmentation module is specifically configured to:
  • the coded codewords are equally divided into a plurality of segments according to the order of the encoded codewords.
  • the segmentation module is further configured to:
  • padding bits are added to the encoded codeword so that the number of codewords included in each segment is the same.
  • the segmentation module is specifically configured to:
  • the coded codeword is divided into a plurality of segments according to the order of the encoded codewords.
  • the grouping module is specifically configured to:
  • the value obtained by modulating the number of segments of the obtained codeword in order is used as the group number of the segment;
  • the interleaving module is specifically configured to:
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout;
  • the interleaver depth values corresponding to each group of codewords are the same or different.
  • the interleaving module is specifically configured to:
  • any set of codewords if the length of the group of codewords is not a multiple of the corresponding interleaving depth value of the group, padding bits are added at the end of the group of codewords, so that the group of codeword lengths is the corresponding interleaving depth value of the group. Multiples.
  • the interleaving module is specifically configured to:
  • Each group of code words is interleaved in a parallel manner in a manner of row write column readout.
  • An embodiment of the present application provides another interleaver, where the interleaver includes:
  • At least one processing unit and at least one storage unit, wherein the storage unit stores program code, and when the program code is executed by the processing unit, causes the processing unit to perform the following process:
  • Each of the obtained sequences is output by serial-to-parallel conversion.
  • the dividing the coded codeword into multiple segments including:
  • the coded codeword is equally divided into multiple segments.
  • the dividing the coded codeword into multiple segments including:
  • Each column of code words output by the segment interleaver is taken as a segment.
  • the dividing the coded codeword into multiple segments including:
  • the coded codewords are equally divided into a plurality of segments according to the order of the encoded codewords.
  • the dividing the coded codeword into multiple segments further comprising:
  • padding bits are added to the encoded codeword so that the number of codewords included in each segment is the same.
  • the dividing the coded codeword into multiple segments including:
  • the coded codeword is divided into a plurality of segments according to the order of the encoded codewords.
  • the grouping the obtained multi-segment codewords includes:
  • the value obtained by modulating the number of segments of the obtained codeword in order is used as the group number of the segment;
  • the interleaving each set of codewords according to the manner in which the row write column is read out comprises:
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout;
  • the interleaver depth values corresponding to each group of codewords are the same or different.
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout, including:
  • any set of codewords if the length of the group of codewords is not a multiple of the corresponding interleaving depth value of the group, padding bits are added at the end of the group of codewords, so that the group of codeword lengths is the corresponding interleaving depth value of the group. Multiples.
  • the interleaving each set of codewords according to the manner in which the row write column is read out comprises:
  • Each group of code words is interleaved in a parallel manner in a manner of row write column readout.
  • the embodiment of the present application provides a computing device readable storage medium, where the software program stores a software program, including program code, when the program code is run on a computing device, the software program is read by one or more processors.
  • a method of interleaving data by any of the above is implemented when fetching and executing.
  • the encoded codeword is divided into multiple segments, and after the multi-segment codewords are grouped, each group of codewords is interleaved according to the manner of row write column readout, to obtain a sequence corresponding to each group of codewords, and then Each of the obtained sequences is output by serial-to-parallel conversion. Since the interleaving is performed by means of the segmentation grouping, the delay is reduced without depending on the interleaving pattern, and the storage resource is saved.
  • 1A is a schematic flowchart of a method for interleaving data according to an embodiment of the present application
  • FIG. 1B is a schematic diagram of segmentation of a segment interleaver according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of dividing a multi-segment codeword according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of grouping according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of interleaving according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of performance comparison of different interleaving schemes using 16-QAM (Quadrature Amplitude Modulation) according to an embodiment of the present application;
  • FIG. 5 is a schematic diagram of performance comparison of different interleaving schemes using 16-QAM (Quadrature Amplitude Modulation) according to an embodiment of the present application;
  • 6A is a schematic diagram of performance comparison of different interleaving schemes using 64-QAM according to an embodiment of the present application
  • FIG. 6B is a schematic diagram of performance comparison of different depth interleaving schemes according to an embodiment of the present application.
  • FIG. 7 is a schematic structural view of a first interleaver according to an embodiment of the present application.
  • FIG. 8 is a schematic structural view of a second interleaver according to an embodiment of the present application.
  • the method for interleaving data in the embodiment of the present application includes:
  • Step 100 dividing the coded codeword into multiple segments
  • Step 101 group the obtained multi-segment codewords
  • Step 102 Interleave each group of code words in a manner of row write column readout to obtain a sequence corresponding to each group of code words;
  • Step 103 Output each sequence obtained by serial-to-parallel conversion.
  • the encoded codeword is divided into multiple segments, and after the multi-segment codewords are grouped, each group of codewords is interleaved according to the manner of row write column readout, to obtain a sequence corresponding to each group of codewords, and then Each of the obtained sequences is output by serial-to-parallel conversion. Since the interleaving is performed by means of the segmentation grouping, the delay is reduced without depending on the interleaving pattern, and the storage resource is saved.
  • the codeword obtained by the encoding is equally divided into multiple segments.
  • the embodiment of the present application provides two schemes for segmentation. It should be noted that the two methods described below are merely examples, and any solution capable of segmenting codewords is applicable to the embodiments of the present application.
  • Segmentation mode 1 The encoded codewords are equally divided into multiple segments according to the order of the codewords obtained by the coding.
  • the order of the encoded code words here is the order of the code streams output after encoding.
  • the encoded codeword is one codeword; if the encoded codeword is multiple, The encoded codeword is then a plurality of codewords.
  • the encoded codewords may be equally divided into multiple segments according to the positive sequence of the codewords obtained by coding, for example, when the codewords obtained by coding are 010101, the segments are segmented according to 010101; and the inverse of the codewords obtained according to the codes may also be used.
  • the codewords obtained by the encoding are equally divided into a plurality of segments, for example, when the codeword obtained by the code is 010101, the segmentation is performed according to 101010.
  • the number of segments can be any value such as 7, 19, 31.
  • padding bits are added to the coded codewords so that the number of codewords included in each segment is the same.
  • the padding bit can be 0.
  • the padding bit may not be added
  • the coded codeword is divided into a plurality of segments according to the order of the encoded codewords.
  • the specific segmentation method is similar to that described above, and will not be described here.
  • Segmentation mode 2 segmentation by a segmentation interleaver.
  • the encoded codeword is input to the segment interleaver according to the manner in which the row is written into the column;
  • Each column of code words output by the segment interleaver is taken as a segment.
  • the segment interleaver when the segment interleaver outputs codewords, it can be output in order from bottom to top, that is, all columns are output in order from bottom to top. It can also be output in order from top to bottom, that is, all columns are output in order from top to bottom. It can also alternate output from bottom to top and top to bottom, such as the first column from bottom to top, the second column from top to bottom, the third column from bottom to top, and so on; The column outputs from top to bottom, the second column outputs from bottom to top, the third column outputs from top to bottom, and so on.
  • the segment interleaver of the embodiment of the present application may be a block interleaver or the like.
  • the block interleaver is taken as an example for explanation.
  • the data to be segmented (ie, the coded codeword) is read into a block interleaver according to the row write column, and each column output is a segment (ie, a segment), and the block interleaver
  • the row read shown in Figure 1B lists only a simple illustration of the row and column interleaver, and does not preclude the replacement of certain rows or columns of the block interleaver, as well as other forms of block interleaving.
  • the codeword length is not a multiple of the number of segments, adding a padding bit to the coded codeword, so that the padded codeword length is a multiple of the number of the segment interleaver columns;
  • the padded codeword is then input to the segment interleaver in the manner of row write column readout.
  • the number of segments is the number of columns of the segmentation interleaver.
  • the number of segmented interleaver columns is 5, and 4 padding bits can be added at the end, so that it can be divided into 5 segments, each with 7 codewords.
  • the padding bit can be 0.
  • the number obtained by sequentially modulating the number of segments of the obtained codewords is used as the grouping number of the segment; the segments with the same grouping number are grouped into one group.
  • the modulus value here can be any value such as 3, 5, and 7.
  • the packet number can also be determined by using the remainder.
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout;
  • the interleaver depth values corresponding to each group of codewords are the same or different.
  • the interleaving depth value here may be the number of rows of the interleaver, the number of columns of the interleaver, or other values.
  • the interleave depth may be the same or different, for example, packet interleaving with a depth of 5, or the interleaving depth of each group is ⁇ 1, 3, 5, 7, 9, ..., and so on.
  • the interleaving depth of each group can be set according to different code lengths, code rates, and polarization code polarization conditions.
  • the interleaving depth can be deeper than that of the short code.
  • any group of codewords if the group codeword length is not a multiple of the corresponding interlace depth value of the group, padding bits are added at the end of the group of codewords, so that the group codeword length is the group corresponding A multiple of the interleaved depth value.
  • the corresponding interlace depth value of the group is 5, and it is necessary to add 4 padding bits at the end of the group, such that 35 is a multiple of 5.
  • the padding bit can be 0.
  • the embodiment of the present application may also interleave each group of code words in a parallel manner in a manner of row write column readout.
  • each of the obtained sequences is output by serial-to-parallel conversion, that is, the output sequence of each packet is interleaved and outputted in a certain order, for example, the order may be a natural order 1, 2, 3, 4... It can be in any order such as 1, 3, 4, 2....
  • it may be output in the order after interleaving.
  • group 1 is first interleaved, then group 4, group 3, and group 2, and the output order may be 1, 4, 3, and 2.
  • the order of setting is 3, 2, 4, and 1
  • the output order is 3, 2, 4, and 1.
  • the M-bit long codeword obtained after encoding is divided into 31 segments.
  • the fifth group of data is subjected to an interleaving operation of writing a column read with a depth of 9.
  • the five sets of codewords can be compared in parallel to reduce processing latency, as shown in FIG.
  • the natural sequence output is used, that is, the first interleaving operation ends, and the input is first; or other setting sequences may be used, such as the first group, the fourth group, the fifth group, the second group, and the third group. Output order; or random order input.
  • the polarization codes at the code rates R of 1/3, 1/2, and 2/3 are respectively subjected to the interleaving scheme of the embodiment of the present application, and the high-order
  • the performance of -QAM is shown in Figure 5, and the performance with 64-QAM is shown in Figure 6A.
  • the designed-int in FIG. 5 and FIG. 6A represents a performance curve obtained by using the interleaving scheme of the embodiment of the present application
  • Random-int represents the performance curve obtained using the existing random interleaving scheme.
  • the interleaving scheme of the embodiment of the present application can achieve similar performance to the random interleaver without storing the interleaving pattern.
  • the embodiment of the present application provides a performance curve comparison of two interleaving depths of five, one is ⁇ 1, 3, 5, 7, 9 ⁇ , and the other is ⁇ 3, 5, 7 , 9, 11 ⁇ , the specific performance curve is shown in Figure 6B.
  • an interleaver is also provided in the embodiment of the present application.
  • the method for solving the problem is similar to the method for interleaving data in the embodiment of the present application. Therefore, the implementation of the device can refer to the implementation of the method, and the method is repeated. It will not be repeated here.
  • the first interleaver of the embodiment of the present application includes:
  • a segmentation module 700 configured to divide the coded codeword into multiple segments
  • a grouping module 701, configured to group the obtained multi-segment codewords
  • the interleaving module 702 is configured to interleave each group of code words in a manner of row write column readout to obtain a sequence corresponding to each group of code words;
  • the output module 703 is configured to output each of the obtained sequences by serial-to-parallel conversion.
  • the segmentation module 700 is specifically configured to:
  • the coded codeword is equally divided into multiple segments.
  • the segmentation module 700 is specifically configured to:
  • Each column of code words output by the segment interleaver is taken as a segment.
  • the segmentation module 700 is specifically configured to:
  • the coded codewords are equally divided into a plurality of segments according to the order of the encoded codewords.
  • the segmentation module 700 is further configured to:
  • padding bits are added to the encoded codeword so that the number of codewords included in each segment is the same.
  • the segmentation module 700 is specifically configured to:
  • the coded codeword is divided into a plurality of segments according to the order of the encoded codewords.
  • the grouping module 701 is specifically configured to:
  • the value obtained by modulating the number of segments of the obtained codeword in order is used as the group number of the segment;
  • the interleaving module 702 is specifically configured to:
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout;
  • the interleaver depth values corresponding to each group of codewords are the same or different.
  • the interleaving module 702 is specifically configured to:
  • any set of codewords if the length of the group of codewords is not a multiple of the corresponding interleaving depth value of the group, padding bits are added at the end of the group of codewords, so that the group of codeword lengths is the corresponding interleaving depth value of the group. Multiples.
  • the interleaving module 702 is specifically configured to:
  • Each group of code words is interleaved in a parallel manner in a manner of row write column readout.
  • the output module 703 is specifically configured to:
  • Each sequence is output in the order in which the interleaving ends or each sequence is output in the set order.
  • the second interleaver in the embodiment of the present application includes:
  • At least one processing unit 800 and at least one storage unit 801, wherein the storage unit stores program code, and when the program code is executed by the processing unit, causes the processing unit 800 to perform the following process:
  • processing unit 800 is specifically configured to:
  • the coded codeword is equally divided into multiple segments.
  • processing unit 800 is specifically configured to:
  • Each column of code words output by the segment interleaver is taken as a segment.
  • processing unit 800 is specifically configured to:
  • the coded codewords are equally divided into a plurality of segments according to the order of the encoded codewords.
  • processing unit 800 is further configured to:
  • padding bits are added to the encoded codeword so that the number of codewords included in each segment is the same.
  • processing unit 800 is specifically configured to:
  • the coded codeword is divided into a plurality of segments according to the order of the encoded codewords.
  • processing unit 800 is specifically configured to:
  • the value obtained by modulating the number of segments of the obtained codeword in order is used as the group number of the segment;
  • processing unit 800 is specifically configured to:
  • the group of codewords is interleaved by using a corresponding interleaving depth value according to a manner of row write column readout;
  • the interleaver depth values corresponding to each group of codewords are the same or different.
  • processing unit 800 is specifically configured to:
  • any set of codewords if the length of the group of codewords is not a multiple of the corresponding interleaving depth value of the group, padding bits are added at the end of the group of codewords, so that the group of codeword lengths is the corresponding interleaving depth value of the group. Multiples.
  • processing unit 800 is specifically configured to:
  • Each group of code words is interleaved in a parallel manner in a manner of row write column readout.
  • processing unit 800 is specifically configured to:
  • Each sequence is output in the order in which the interleaving ends or each sequence is output in the set order.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processing units represented by processing unit 800 and various circuits of memory units represented by memory unit 801.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processing unit 800 is responsible for managing the bus architecture and general processing, and the storage unit 801 can store data used by the processing unit 800 when performing operations.
  • the processing unit 800 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • the embodiment of the present application further provides a computing device readable storage medium, which may be non-volatile, that is, the content is not lost after power off.
  • the storage medium stores software programs, including program code, when the program code is run on a computing device, the software program, when being read and executed by one or more processors, implements any of the above methods for interleaving data. Program.
  • the computer storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memories (for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memories for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).
  • the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system or Used in conjunction with the instruction execution system.
  • a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

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Abstract

Les modes de réalisation de la présente invention concernent un procédé et un dispositif d'entrelacement pour entrelacer des données, qui sont utilisés pour résoudre le problème rencontré dans la technologie existante, où un dispositif d'entrelacement aléatoire, bien qu'il présente des performances relativement bonnes, occupe un nombre relativement important de ressources du fait que le dispositif doit sauvegarder un motif d'entrelacement à l'avance. Dans les modes de réalisation de la présente invention, des mots de code codés sont divisés en segments multiples, et après avoir regroupé les segments multiples de mots de code, chaque groupe de mots de code est entrelacé selon un mode à inscription en lignes et lecture en colonnes, une séquence correspondant à chaque groupe de mots de code est obtenue, puis chaque séquence obtenue est délivrée au moyen d'une conversion série-parallèle. Du fait de la réalisation de l'entrelacement au moyen d'un regroupement de segments, le retard est réduit et les ressources de stockage sont économisées suivant une approche consistant à ne pas s'appuyer sur un motif d'entrelacement.
PCT/CN2018/089091 2017-08-11 2018-05-30 Procédé et dispositif d'entrelacement pour entrelacer des données WO2019029238A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201710686687 2017-08-11
CN201710686687.2 2017-08-11
CN201710707150.X 2017-08-17
CN201710707150.XA CN109391366A (zh) 2017-08-11 2017-08-17 一种对数据进行交织的方法和交织器
CN201710937898.9A CN109391368B (zh) 2017-08-11 2017-09-30 一种对数据进行交织的方法和交织器
CN201710937898.9 2017-09-30

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Cited By (1)

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CN110958081A (zh) * 2019-12-02 2020-04-03 上海道生物联技术有限公司 一种无线通信帧结构分段信号处理方法

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US5802051A (en) * 1996-06-10 1998-09-01 Telefonaktiebolaget Lm Ericsson Multiplexing of voice and data minicells
CN1291055A (zh) * 1999-06-30 2001-04-11 阿尔卡塔尔公司 一个产生为了低比特速率应用的atm信元的方法
CN1537375A (zh) * 2001-06-29 2004-10-13 ض� 在具有服务质量(QoS)特征的基于包的网络中减少电力消耗

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Publication number Priority date Publication date Assignee Title
US5802051A (en) * 1996-06-10 1998-09-01 Telefonaktiebolaget Lm Ericsson Multiplexing of voice and data minicells
CN1291055A (zh) * 1999-06-30 2001-04-11 阿尔卡塔尔公司 一个产生为了低比特速率应用的atm信元的方法
CN1537375A (zh) * 2001-06-29 2004-10-13 ض� 在具有服务质量(QoS)特征的基于包的网络中减少电力消耗

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110958081A (zh) * 2019-12-02 2020-04-03 上海道生物联技术有限公司 一种无线通信帧结构分段信号处理方法

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