WO2014153767A1 - Procédé et dispositif de traitement de données - Google Patents

Procédé et dispositif de traitement de données Download PDF

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Publication number
WO2014153767A1
WO2014153767A1 PCT/CN2013/073408 CN2013073408W WO2014153767A1 WO 2014153767 A1 WO2014153767 A1 WO 2014153767A1 CN 2013073408 W CN2013073408 W CN 2013073408W WO 2014153767 A1 WO2014153767 A1 WO 2014153767A1
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WIPO (PCT)
Prior art keywords
data
processing
pilot
layer mapping
module
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PCT/CN2013/073408
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English (en)
Chinese (zh)
Inventor
符鸿亮
刘宇
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/073408 priority Critical patent/WO2014153767A1/fr
Priority to CN201380000443.4A priority patent/CN104321992B/zh
Publication of WO2014153767A1 publication Critical patent/WO2014153767A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end

Definitions

  • the present invention relates to the field of communications, and in particular, to a data processing method and apparatus. Background technique
  • MIMO Multiple-Input Multiple-Output
  • LTE Long Term Evolution
  • MIMO Multiple-Input Multiple-Output
  • the core of MIMO technology is space-time signal processing. Multiple antennas are placed at the transmitting end and the receiving end, and spatial dimensions are increased by multiple antennas to obtain spatial multiplexing gain or spatial diversity gain.
  • the transmitted data needs to be transmitted through multiple antennas after being subjected to MIMO precoding processing.
  • MIMO precoding layer mapping processing of precoded data is required, and in the precoding Before the data is subjected to layer mapping processing, the data is first modulated.
  • a first aspect of the present invention provides a data processing method, which may include:
  • the channel encoded processed data is preprocessed, and the preprocessing includes layer mapping processing. And modulating the preprocessed data;
  • Multiple input multiple output MIMO precoding processing is performed on the modulated data.
  • the pre-processing the channel-encoded data further includes:
  • the pilot position reservation processing is performed on the data after the layer mapping processing.
  • the pre-processing the channel-encoded data further includes:
  • Subcarrier mapping processing is performed on the data after the pilot position reservation processing.
  • the method before performing the multiple input multiple output MIMO precoding process on the modulated data, the method further includes:
  • the performing layer mapping processing on the channel-coded data includes:
  • the layer mapping mode is used to indicate the number of layers to be mapped.
  • performing pilot location reservation processing on the layer mapping processed data includes:
  • pilot position reservation processing on the layer mapping processed data according to a modulation mode corresponding to a bit stream of the user and a set pilot position indicator, where the modulation mode is used to indicate that each constellation point corresponds to The bit data and the bit data corresponding to each pilot, the pilot position indicator is used to indicate the insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string
  • the length of the bit data string is equal to a bit data stream of the user.
  • the sum of the number of corresponding constellation points and the number of pilots to be inserted, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position.
  • a second aspect of the present invention provides an apparatus for data processing, which may include:
  • a channel coding module configured to perform channel coding processing on the data
  • a pre-processing module configured to perform pre-processing on the data processed by the channel coding module, where the pre-processing includes layer mapping processing;
  • a modulation module configured to perform modulation processing on the preprocessed data of the preprocessing module
  • a precoding module configured to perform multiple input and multiple output on the data modulated by the adjustment module
  • the pre-processing module includes: a layer mapping processing module, configured to perform layer mapping processing on the channel-encoded data.
  • the pre-processing module further includes:
  • the pilot position reservation module is configured to perform a pilot position reservation process on the data after the layer mapping process is performed on the layer mapping module.
  • the pre-processing module further includes:
  • the subcarrier mapping processing module is configured to perform subcarrier mapping processing on the data after the pilot position reservation processing by the pilot position reservation module.
  • the method further includes: a mapping module, configured to perform pilot mapping processing on the modulated data of the modulation module, to map the pilot to a pilot position reserved in a pilot position reservation process of the pilot position reservation module And performing multi-input and multi-output MIMO pre-coding processing on the data after the pilot mapping processing module performs pilot mapping processing on the pilot mapping module.
  • a mapping module configured to perform pilot mapping processing on the modulated data of the modulation module, to map the pilot to a pilot position reserved in a pilot position reservation process of the pilot position reservation module
  • multi-input and multi-output MIMO pre-coding processing on the data after the pilot mapping processing module performs pilot mapping processing on the pilot mapping module.
  • the layer mapping processing module is specifically configured to use a modulation manner corresponding to a bit data stream of a user. Performing a layer mapping process on the bit-coded user's bit data stream with the set layer mapping mode, where the modulation mode is used to indicate bit data corresponding to each constellation point, and the layer mapping mode is used to indicate mapping. The number of layers.
  • the pilot location reservation module is specifically configured to be configured according to a bit data stream of a user.
  • the modulation mode and the set pilot position indicator perform pilot position reservation processing on the layer mapped processed data, where the modulation mode is used to indicate bit data corresponding to each constellation point and each pilot Corresponding bit data, the pilot position indicator is used to indicate the insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string
  • the length of the bit data string is equal to a bit data stream of the user.
  • the sum of the number of corresponding constellation points and the number of pilots to be inserted, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position.
  • a third aspect of the present invention provides an apparatus for data processing, including a memory and a processor, the processor invoking a program stored in the memory, and performing the following steps:
  • the channel encoded processed data is preprocessed, and the preprocessing includes layer mapping processing. And modulating the preprocessed data;
  • Multiple input multiple output MIMO precoding processing is performed on the modulated data.
  • the step of the processor performing pre-processing of the channel-encoded data further includes:
  • the pilot position reservation processing is performed on the data after the layer mapping processing.
  • the step of the processor performing pre-processing of the channel-encoded data further includes:
  • Subcarrier mapping processing is performed on the data after the pilot position reservation processing.
  • the processor performs multiple input multiple output MIMO precoding processing on the modulated data. Before, also perform the following steps:
  • the performing, by the processor, performing layer mapping processing on the channel-coded data includes: Performing layer mapping processing on the bit-coded user's bit data stream, and the modulation mode is used to indicate bit data corresponding to each constellation point, the modulation mode corresponding to the bit data stream and the set layer mapping mode, The layer mapping mode is used to indicate the number of layers to be mapped.
  • the processor performs pilot position reservation on the data processed by the layer mapping process.
  • the specific treatment includes:
  • pilot position reservation processing on the layer mapping processed data according to a modulation mode corresponding to a bit stream of the user and a set pilot position indicator, where the modulation mode is used to indicate that each constellation point corresponds to The bit data and the bit data corresponding to each pilot, the pilot position indicator is used to indicate the insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string, and the length of the bit data string is equal to a sum of a number of constellation points corresponding to the bit stream of the user and a number of pilots to be inserted, the bit data
  • the different values of the bits in the string represent the pilot position and the constellation point position, respectively.
  • a fourth aspect of the present invention provides a computer storage medium, which may comprise computer executable instructions for execution by a processor of a computer to perform a department or all of any of the embodiments of the present invention Process.
  • the layer mapping process is performed before the modulation process, thereby enabling the system to process more in the case that the amount of data processed per unit time is constant. Constellation point data improves processing efficiency.
  • FIG. 1 is a schematic flow chart of a first embodiment of a data processing method according to the present invention.
  • FIG. 2 is a schematic diagram of a principle of performing layer mapping processing according to an embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a second embodiment of a data processing method according to the present invention.
  • FIG. 4 is a schematic diagram of a principle of performing pilot position reservation processing according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of a third embodiment of a data processing method according to the present invention.
  • FIG. 6 is a schematic structural diagram of a first embodiment of a data processing apparatus according to the present invention
  • FIG. 7 is a schematic structural diagram of a second embodiment of a data processing apparatus according to the present invention
  • FIG. 9 is a schematic structural view of a fourth embodiment of the data processing apparatus of the present invention.
  • FIG. 1 is a schematic flow chart of a first embodiment of a data processing method according to the present invention. As shown in FIG. 1, it may include:
  • Step S110 Perform layer mapping processing on the channel-encoded data.
  • Step S111 Perform modulation processing on the data after the layer mapping process.
  • Step S112 performing multi-input and multi-output MIMO pre-coding processing on the modulated data.
  • step S110 performing layer mapping processing on the channel-coded user bit data stream according to a modulation mode corresponding to the user's bit data stream and a set layer mapping mode, where the modulation mode It is used to indicate bit data corresponding to each constellation point, and the layer mapping mode is used to indicate the number of layers to be mapped.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • the number of bits (bits) included in each constellation point A(0), A(l) A(Nl) is 6 bits; for the 256QAM modulation mode, each constellation point A(0), A( l) The number of bits (bits) included in A(N-1) is 8 bits.
  • N indicates the data length before the layer mapping, and N/2, N/3, and N/4 indicate the data length after the two-layer mapping, the three-layer mapping, and the four-layer mapping.
  • layer mapping processing may be implemented by instructions.
  • the instruction for performing layer mapping may be: SEL_IQ - QPSK:.
  • the inputs to the SEL-IQ-QPSK instruction are: Channel-coded bit data and layer mapping mode indication.
  • SEL— IQ The output of the QPSK instruction is: Bit data after layer mapping processing.
  • mode 0 indicates that the input BIT data is mapped in two layers, then the mode is In the case of 0, the bit data is mapped to two layers in units of 2 bits; mode 1 indicates that the input bit data is mapped in three layers, and in the case of mode 1, the bit data is mapped to the third layer in units of 2 bits.
  • A(0) includes the l-2bit of the data
  • A(l) includes the 3-4th bit of the data
  • A(2) includes the 5th bit of the data.
  • similar layer mapping processing instructions can be set.
  • the bit units taken during layer mapping are different.
  • the layer mapping process is performed before the modulation process, thereby enabling the system to process more cases in the case where the amount of data processed per unit time is constant. Constellation point data improves processing efficiency.
  • FIG. 3 is a schematic flow chart of a second embodiment of a data processing method according to the present invention. As shown in FIG. 3, it may include:
  • Step S310 performing layer mapping processing on the channel-encoded data.
  • Step S311 Perform pilot position reservation processing on the layer mapped data.
  • Step S312 performing modulation processing on the data after the pilot position reservation processing.
  • Step S313 Perform pilot mapping processing on the modulated data to map the pilot to a pilot position reserved during the pilot position reservation processing.
  • Step S314 Perform multi-input and multi-output MIMO pre-coding processing on the data after the pilot mapping processing.
  • step S310 layer mapping processing may be performed on the channel-coded user bit data stream according to a modulation mode corresponding to the user's bit data stream and a set layer mapping mode, where the modulation The mode is used to indicate bit data corresponding to each constellation point, and the layer mapping mode is used to indicate the number of layers to be mapped.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • the number of bits (bits) included in each constellation point A(0), A(l) A(Nl) is 6 bits; for the 256QAM modulation mode, each constellation point A(0), A( l) The number of bits (bits) included in A(N-1) is 8 bits.
  • N indicates the data length before the layer mapping, and N/2, N/3, and N/4 indicate the data length after the two-layer mapping, the three-layer mapping, and the four-layer mapping.
  • layer mapping processing may be implemented by instructions.
  • the instructions for performing layer mapping may be: SEL_IQ - QPSK:.
  • the input to the SEL-IQ-QPSK instruction is: Channel-coded bit data and layer mapping mode indication.
  • the output of the SEL-IQ-QPSK instruction is: Bit-mapped bit data.
  • the system maps the bit data to different layers in units of 2 bits according to the layer mapping mode indication.
  • mode 0 indicates that the input BIT data is mapped in two layers, then the mode is In the case of 0, the bit data is mapped to two layers in units of 2 bits; mode 1 indicates that the input bit data is mapped in three layers, and in the case of mode 1, the bit data is mapped to the third layer in units of 2 bits.
  • A(0) includes the l-2bit of the data
  • A(l) includes the 3-4bit of the data
  • A(2) includes the 5-6th bit of the data.
  • similar layer mapping processing instructions can be set.
  • the bit units taken during layer mapping are different.
  • pilot layer reservation processing may be performed on the layer mapping processed data according to a modulation mode corresponding to a bit stream of the user and a set pilot position indicator, where The modulation mode is used to indicate bit data corresponding to each constellation point and bit data corresponding to each pilot, and the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string
  • the length of the bit data string is equal to the number of constellation points corresponding to the bit stream of the user and the pilot to be inserted.
  • the sum of the numbers, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position.
  • a position in the bit data string with a value of "0" indicates that the corresponding position of the output data needs to output a constellation point; otherwise, the corresponding position of the output data is a pilot position (may be empty before the pilot is inserted or Take the value "0").
  • the data string before the pilot position reservation processing is A(0), A(3), A(6), A(9) A(N-3);
  • the data string after the location reservation processing is A(0), RS, A(3), RS, A(6), RS, A(9) A(N-3).
  • RS represents the pilot position
  • N represents the data length before the pilot position is reserved
  • Nrs is the number of pilot positions reserved for the pilot.
  • the pilot position reservation processing may be implemented by using an instruction, for example, for the modulation mode of the QPSK, the instruction for performing the pilot position reservation processing may be:
  • ZEROINS BITMAP — QPSK:.
  • the input of the ZEROINS_BITMAP_QPSK instruction is: layer mapped bit data and pilot position indicator.
  • ZEROINS BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved.
  • Preserving the pilot position between the input bit data in units of 2 bits for example, assuming that the pilot position indicator is a bit data string, and the number of constellation points input when performing pilot position reservation processing is N
  • the length of the bit to be inserted is Nrs
  • the length of the bit of the bit data string is N+Nrs.
  • the length of the bit data string is 6, for example, 001001, where "1" can indicate that the corresponding position of the output data needs to output a pilot, that is, the third and sixth bits of the output data should output a pilot; wherein "0" can indicate that the corresponding position of the output data needs to output a constellation point, Then, the 1-2, 4-5 bits of the output data should output constellation points, and the 2-1, 4-5 bit output constellation points are consecutively numbered.
  • similar pilot position reservation processing instructions can be set.
  • the bit units obtained when performing pilot position reservation processing are different.
  • step S313 the modulated data may be subjected to pilot mapping processing to map the pilot to the pilot position reserved during the pilot position reservation process. on.
  • the layer mapping processing and the pilot position reservation processing are performed before the modulation processing, thereby making the system unchanged in the unit time, the system It can process more constellation point data when layer mapping and pilot position reservation, and improve processing efficiency.
  • FIG. 5 is a schematic flow chart of a third embodiment of a data processing method according to the present invention. As shown in FIG. 5, it may include:
  • Step S510 performing layer mapping processing on the channel-encoded data.
  • Step S511 performing pilot position reservation processing on the data processed by the layer mapping.
  • Step S512 performing subcarrier mapping processing on the data after the pilot position reservation processing.
  • Step S513 performing modulation processing on the data after the subcarrier mapping processing.
  • Step S514 Perform pilot mapping processing on the modulated data to map the pilot to a pilot position reserved during the pilot position reservation processing.
  • Step S515 Perform multi-input and multi-output MIMO pre-coding processing on the data after the pilot mapping processing.
  • step S510 layer mapping processing may be performed on the channel-coded user bit data stream according to a modulation mode corresponding to the user's bit data stream and a set layer mapping mode, where the modulation The mode is used to indicate bit data corresponding to each constellation point, and the layer mapping The shot mode is used to indicate the number of layers to be mapped.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • the number of bits (bits) included in each constellation point A(0), A(l) A(Nl) is 6 bits; for the 256QAM modulation mode, each constellation point A(0), A( l) The number of bits (bits) included in A(N-1) is 8 bits.
  • N indicates the data length before the layer mapping, and N/2, N/3, and N/4 indicate the data length after the two-layer mapping, the three-layer mapping, and the four-layer mapping.
  • layer mapping processing may be implemented by instructions.
  • the instruction for performing layer mapping may be: SEL_IQ - QPSK:.
  • the inputs to the SEL-IQ-QPSK instruction are: Channel-coded bit data and layer mapping mode indication.
  • SEL— IQ The output of the QPSK instruction is: Bit data after layer mapping processing.
  • mode 0 indicates that the input BIT data is mapped in two layers, then the mode is In the case of 0, the bit data is mapped to two layers in units of 2 bits; mode 1 indicates that the input bit data is mapped in three layers, and in the case of mode 1, the bit data is mapped to the third layer in units of 2 bits.
  • A(0) includes the l-2bit of the data
  • A(l) includes the 3-4th bit of the data
  • A(2) includes the 5th bit of the data.
  • similar layer mapping processing instructions can be set.
  • the bit units taken during layer mapping are different.
  • pilot layer reservation processing may be performed on the layer mapping processed data according to a modulation mode corresponding to a bit stream of the user and a set pilot position indicator, where The modulation mode is used to indicate bit data corresponding to each constellation point and bit data corresponding to each pilot, and the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string, and the length of the bit data string is equal to the number of constellation points corresponding to the bit stream of the user and the pilot to be inserted. The sum of the numbers, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position.
  • a position in the bit data string with a value of "0" indicates that the corresponding position of the output data needs to output a constellation point; otherwise, the corresponding position of the output data is a pilot position (may be empty before the pilot is inserted or Take the value "0").
  • the data strings before the pilot position reservation processing are A(0), A(3), A(6), A(9) A(N-3);
  • the data string after the location reservation processing is A(0), RS, A(3), RS, A(6), RS, A(9) A(N-3). among them
  • RS represents the pilot position
  • N represents the data length before the pilot position is reserved
  • Nrs is the number of pilot positions reserved for the pilot.
  • the pilot position reservation processing may be implemented by using an instruction, for example, for the modulation mode of the QPSK, the instruction for performing the pilot position reservation processing may be:
  • ZEROINS BITMAP — QPSK:.
  • the input of the ZEROINS_BITMAP_QPSK instruction is: layer mapped bit data and pilot position indicator.
  • ZEROINS BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved.
  • the system reserves the pilot position between the input bit data in units of 2 bits according to the indication of the pilot position indicator, for example, assuming that the pilot position indicator is bit data.
  • the number of constellation points input when the pilot position reservation processing is performed is N, and the number of pilots to be inserted is Nrs, and the length of the bit data bit of the bit data string is N+Nrs, for example, N 4, Nrs is 2, the length of the bit data string is 6, for example, 001001, where "1" can indicate that the corresponding position of the output data needs to output a pilot, that is, the 3rd and 6th bits of the output data should be output. Pilot; where "0" can indicate that the corresponding position of the output data needs to output a constellation point, then the 1-2, 4-5 bits of the output data should output a constellation point, and the constellation of 1-2, 4-5 bits output The number of points is continuous. For other modulation methods, similar pilot position reservation processing instructions can be set. For different modulation methods, the bit units taken during the pilot position reservation processing are different.
  • layer mapping processing and pilot position reservation processing are performed.
  • the subcarrier mapping process is performed before the modulation process, so that the system can process the layer mapping and the pilot position reservation and the subcarrier mapping process when the amount of data processed in the unit time is unchanged. More constellation point data improves processing efficiency.
  • the BIT-EXPAND-BPSK, BIT-EXPAND-QPSK, BIT-EXPAND- 16QAM, BIT-EXPAND-64QAM can be defined, and the modulation units of 1BIT, 2BIT, 4BIT, and 6BIT of the input data are extended to 8 BIT.
  • embodiments of the present invention also provide an embodiment of an apparatus item that can be used to implement the foregoing method embodiments.
  • the channel coding module 61 is configured to perform channel coding processing on the data.
  • the pre-processing module 62 is configured to perform pre-processing on the data processed by the channel coding module 61, where the pre-processing includes a layer mapping process.
  • the pre-processing module 62 includes: a layer mapping processing module 622. Used to perform layer mapping processing on channel-encoded data.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • layer mapping processing may be implemented by instructions.
  • the instruction for performing layer mapping may be: SEL_IQ - QPSK:.
  • the inputs to the SEL-IQ-QPSK instruction are: Channel-coded bit data and layer mapping mode indication.
  • SEL— IQ The output of the QPSK instruction is: Bit data after layer mapping processing.
  • the layer mapping process is performed before the modulation process, whereby the system can process more constellation points in the case where the amount of data processed per unit time is constant. Data, improved processing efficiency.
  • the channel coding module 71 is configured to perform channel coding processing on the data.
  • the pre-processing module 72 is configured to perform pre-processing on the data processed by the channel coding module 71, where the pre-processing includes a layer mapping process and a pilot position reservation process.
  • the pre-processing module 72 The method includes: a layer mapping processing module 722 and a pilot location reservation module 723, where: a layer mapping processing module 722 is configured to perform layer mapping processing on the channel encoded data.
  • the pilot position reservation module 723 is configured to perform pilot position reservation processing on the layer mapping processing performed by the layer mapping module 722.
  • the modulating module 73 is configured to perform modulation processing on the data preprocessed by the preprocessing module 72.
  • the pilot mapping module 74 is configured to perform pilot mapping processing on the modulated data of the modulation module 73, to map the pilot to the pilot position reservation module, where the pilot position reservation processing is reserved. At the pilot position.
  • the precoding module 75 is configured to perform pilot mapping processing on the data by the pilot mapping module 74 for performing multiple input multiple output MIMO precoding processing.
  • the layer mapping processing module 722 may perform layer mapping processing on the channel-coded user bit data stream according to the modulation mode corresponding to the user's bit data stream and the set layer mapping mode, where The modulation mode is used to indicate bit data corresponding to each constellation point, and the layer mapping mode is used to indicate the number of layers to be mapped.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • each constellation point A(0), A(l) A(Nl) is 6 bits; for the 256QAM modulation mode, each constellation point A(0), A( l) The number of bits (bits) included in A(N-1) is 8 bits.
  • N represents the data length before layer mapping
  • N/2, N/3, N/4 Indicates the data length after two-layer mapping, three-layer mapping, and four-layer mapping.
  • layer mapping processing may be implemented by instructions.
  • the instruction for performing layer mapping may be: SEL_IQ - QPSK:.
  • the inputs to the SEL-IQ-QPSK instruction are: Channel-coded bit data and layer mapping mode indication.
  • SEL— IQ The output of the QPSK instruction is: Bit data after layer mapping processing.
  • the pilot position reservation processing module 723 can perform pilot position pre-processing on the layer mapping processed data according to a modulation mode corresponding to a bit stream of the user and a set pilot position indicator.
  • the processing mode is used to indicate bit data corresponding to each constellation point and bit data corresponding to each pilot
  • the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string
  • the length of the bit data string is equal to the number of constellation points corresponding to the bit stream of the user and the pilot to be inserted.
  • the sum of the numbers, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position.
  • a position in the bit data string with a value of "0" indicates that the corresponding position of the output data needs to output a constellation point; otherwise, the corresponding position of the output data is a pilot position (may be empty before the pilot is inserted or Take the value "0").
  • the data string before the pilot position reservation processing is A(0), A(3), A(6), A(9) A(N-3);
  • the data string after the location reservation processing is A(0), RS, A(3), RS, A(6), RS, A(9) A(N-3).
  • RS represents the pilot position
  • N represents the data length before the pilot position is reserved
  • Nrs is the number of pilot positions reserved for the pilot.
  • the pilot position reservation processing may be implemented by using an instruction, for example,
  • the instructions that can be used to perform pilot location reservation processing are: ZEROINS— BITMAP— QPSK:.
  • ZEROINS_BITMAP_QPSK When the ZEROINS_BITMAP_QPSK instruction is executed, the input of the ZEROINS_BITMAP_QPSK instruction is: layer mapped bit data and pilot position indicator.
  • the system reserves the pilot position between the input bit data in units of 2 bits according to the indication of the pilot position indicator, for example, assuming that the pilot position indicator is bit data.
  • the number of constellation points input when the pilot position reservation processing is performed is N, and the number of pilots to be inserted is Nrs, and the length of the bit data bit of the bit data string is N+Nrs, for example, N 4, Nrs is 2, the length of the bit data string is 6, for example, 001001, where "1" can indicate that the corresponding position of the output data needs to output a pilot, that is, the 3rd and 6th bits of the output data should be output. Pilot; where "0" can indicate that the corresponding position of the output data needs to output a constellation point, then the 1-2, 4-5 bits of the output data should output a constellation point, and the constellation of 1-2, 4-5 bits output The number of points is continuous. For other modulation methods, similar pilot position reservation processing instructions can be set. For different modulation methods, the bit units obtained when performing pilot position reservation processing are different.
  • the pilot mapping module 74 may perform pilot mapping processing on the modulated data to map the pilot to the pilot position reservation processing. Reserved pilot position.
  • the layer mapping processing and the pilot position reservation processing are performed before the modulation processing, thereby making the system unchanged in the unit time, the system It can process more constellation point data when layer mapping and pilot position reservation, and improve processing efficiency.
  • Figure 8 is a block diagram showing the structure of a third embodiment of the apparatus for data processing of the present invention. As shown in FIG. 8, it may include: a channel coding module 81, a pre-processing module 82, a modulation module 83, a pilot mapping module 84, and a pre-coding module 85, where:
  • the channel coding module 81 is configured to perform channel coding processing on the data.
  • the pre-processing module 82 is configured to perform pre-processing on the data processed by the channel coding module 81, where the pre-processing includes a layer mapping process and a pilot position reservation process.
  • the pre-processing module 82 The system includes: a layer mapping processing module 822, a pilot position reservation module 823, and a subcarrier mapping processing module 824, where: a layer mapping processing module 822, configured to layer the channel encoded data Mapping processing.
  • a pilot position reservation module 823 configured to perform a pilot position reservation process on the layer mapping processing block 822, and a subcarrier mapping processing module 824, configured to reserve the module for the pilot position 823 Performs subcarrier mapping processing on the data after the pilot position reservation processing.
  • the modulating module 83 is configured to perform modulation processing on the data preprocessed by the preprocessing module 82.
  • the pilot mapping module 84 is configured to perform pilot mapping processing on the modulated data of the modulation module 83 to map the pilot to the pilot position reservation module, where the pilot position reservation processing is reserved. At the pilot position.
  • the precoding module 85 is configured to perform MIMO precoding processing on the data after the pilot mapping process is performed on the pilot mapping module 84.
  • the layer mapping processing module 822 may perform layer mapping processing on the bit-coded user bit data stream according to the modulation mode corresponding to the user's bit data stream and the set layer mapping mode, where The modulation mode is used to indicate bit data corresponding to each constellation point, and the layer mapping mode is used to indicate the number of layers to be mapped.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • the number of bits (bits) included in each constellation point A(0), A(l) A(Nl) is 6 bits; for the 256QAM modulation mode, each constellation point A(0), A( l) The number of bits (bits) included in A(N-1) is 8 bits.
  • N indicates the data length before the layer mapping, and N/2, N/3, and N/4 indicate the data length after the two-layer mapping, the three-layer mapping, and the four-layer mapping.
  • layer mapping processing may be implemented by instructions.
  • the instructions for performing layer mapping may be: SEL_IQ - QPSK:.
  • the input to the SEL-IQ-QPSK instruction is: Channel-coded bit data and layer mapping mode indication.
  • the output of the SEL-IQ-QPSK instruction is: Bit-mapped bit data.
  • the SEL-QQ-QPSK instruction is executed, the system will follow the 2-bit order according to the layer mapping mode.
  • the bit maps the bit data to different layers. For example, mode 0 indicates that the input BIT data is mapped in two layers.
  • mode 1 indicates When the bit data is input and mapped in three layers, in the case of mode 1, the bit data is mapped to the three layers in units of 2 bits.
  • A(0) includes the l-2bit of the data
  • A(l) includes the 3-4bit of the data
  • A(2) includes the 5-6th bit of the data.
  • similar layer mapping processing instructions can be set.
  • the bit units taken during layer mapping are different.
  • the pilot position reservation processing module 823 may perform pilot position pre-processing on the layer mapping processed data according to a modulation mode corresponding to a bit stream of the user and a set pilot position indicator.
  • the processing mode is used to indicate bit data corresponding to each constellation point and bit data corresponding to each pilot
  • the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string
  • the length of the bit data string is equal to the number of constellation points corresponding to the bit stream of the user and the pilot to be inserted.
  • the sum of the numbers, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position.
  • a position in the bit data string with a value of "0" indicates that the corresponding position of the output data needs to output a constellation point; otherwise, the corresponding position of the output data is a pilot position (may be empty before the pilot is inserted or Take the value "0").
  • the data string before the pilot position reservation processing is A(0), A(3), A(6), A(9) A(N-3);
  • the data string after the location reservation processing is A(0), RS, A(3), RS, A(6), RS, A(9) A(N-3).
  • RS represents the pilot position
  • N represents the data length before the pilot position is reserved
  • Nrs is the number of pilot positions reserved for the pilot.
  • the pilot position reservation processing may be implemented by using an instruction, for example, for the modulation mode of the QPSK, the instruction for performing the pilot position reservation processing may be:
  • ZEROINS BITMAP — QPSK:.
  • the input of the ZEROINS_BITMAP_QPSK instruction is: layer mapped bit data and pilot position indicator.
  • ZEROINS BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved.
  • the system reserves the pilot position between the input bit data in units of 2 bits according to the indication of the pilot position indicator, for example, assuming that the pilot position refers to
  • the indicator is a bit data string, and the number of constellation points input when performing pilot position reservation processing is N, and the number of pilots to be inserted is Nrs, and the length of the bit bit of the bit data string is N +Nrs, for example, N is 4 and Nrs is 2.
  • the length of the bit data string is 6, for example, 001001, where "1" can indicate that the corresponding position of the output data needs to output a pilot, that is, the third of the output data.
  • the pilot mapping module 84 may perform pilot mapping processing on the modulated data to map the pilot to the pilot position reservation processing. Reserved pilot position.
  • the layer mapping processing and the pilot position reservation processing are performed before the modulation processing, thereby making the system unchanged in the unit time, the system It can process more constellation point data when layer mapping and pilot position reservation, and improve processing efficiency.
  • FIG. 9 is a block diagram showing the structure of a fourth embodiment of the apparatus for data processing of the present invention. As shown in FIG. 9, it may include: a memory 91 and a processor 92, wherein the processor 92 calls a program stored in the memory 91 to perform the following steps:
  • the channel encoded processed data is preprocessed, and the preprocessing includes layer mapping processing.
  • Multiple input multiple output MIMO precoding processing is performed on the modulated data.
  • the processor 92 may perform layer mapping processing on the bit-coded user bit data stream according to a modulation mode corresponding to the user's bit data stream and a set layer mapping mode, where the modulation mode It is used to indicate bit data corresponding to each constellation point, and the layer mapping mode is used to indicate the number of layers to be mapped.
  • A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode
  • A(l) A(Nl) The number of bits (bits) included is the same, and the number of bits included in the constellation points between different modulation modes is different.
  • QPSK Quadrature Phase Shift Keying
  • the number of bits (bits) included in each constellation point A(0), A(l), ... A(N-1) is
  • the number of bits (bits) included in each constellation point A(0), A(l) A(Nl) is 6 bits; for the 256QAM modulation mode, each constellation point A(0), A( l) The number of bits (bits) included in A(N-1) is 8 bits.
  • N indicates the data length before the layer mapping, and N/2, N/3, and N/4 indicate the data length after the two-layer mapping, the three-layer mapping, and the four-layer mapping.
  • layer mapping processing may be implemented by instructions.
  • the instruction for performing layer mapping may be: SEL_IQ - QPSK:.
  • the inputs to the SEL-IQ-QPSK instruction are: Channel-coded bit data and layer mapping mode indication.
  • SEL— IQ The output of the QPSK instruction is: Bit data after layer mapping processing.
  • mode 0 indicates that the input BIT data is mapped in two layers, then the mode is In the case of 0, the bit data is mapped to two layers in units of 2 bits; mode 1 indicates that the input bit data is mapped in three layers, and in the case of mode 1, the bit data is mapped to the third layer in units of 2 bits.
  • A(0) includes the l-2bit of the data
  • A(l) includes the 3-4th bit of the data
  • A(2) includes the 5th bit of the data.
  • similar layer mapping processing instructions can be set.
  • the bit units taken during layer mapping are different.
  • the step of the processor 92 performing pre-processing of the channel-encoded data further includes:
  • the pilot position reservation processing is performed on the data after the layer mapping processing.
  • the processor 92 may perform pilot position reservation processing on the layer mapping processed data according to a modulation mode corresponding to a bit data stream of the user and a set pilot position indicator.
  • the modulation mode is used to indicate bit data corresponding to each constellation point and bit data corresponding to each pilot
  • the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points.
  • the pilot position indicator is a bit data string
  • the length of the bit data string is equal to the number of constellation points corresponding to the bit data stream of the user and the required insertion.
  • the sum of the number of pilots, the bits of different values in the bit data string respectively represent the pilot position and the constellation point position. For example, a position in the bit data string with a value of "0" indicates that the corresponding position of the output data needs to output a constellation point; otherwise, the corresponding position of the output data is a pilot position (may be empty before the pilot is inserted or Take the value "0"). For example, referring to FIG.
  • the data strings before the pilot position reservation processing are A(0), A(3), A(6), A(9) A(N-3);
  • the data string after the location reservation processing is A(0), RS, A(3), RS, A(6), RS, A(9) A(N-3).
  • RS represents the pilot position
  • N represents the data length before the pilot position is reserved
  • Nrs is the number of pilot positions reserved for the pilot.
  • the pilot position reservation processing may be implemented by using an instruction, for example, for the modulation mode of the QPSK, the instruction for performing the pilot position reservation processing may be:
  • ZEROINS BITMAP — QPSK:.
  • the input of the ZEROINS_BITMAP_QPSK instruction is: layer mapped bit data and pilot position indicator.
  • ZEROINS BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved.
  • the system reserves the pilot position between the input bit data in units of 2 bits according to the indication of the pilot position indicator, for example, assuming that the pilot position indicator is bit data.
  • the number of constellation points input when the pilot position reservation processing is performed is N, and the number of pilots to be inserted is Nrs, and the length of the bit data bit of the bit data string is N+Nrs, for example, N 4, Nrs is 2, the length of the bit data string is 6, for example, 001001, where "1" can indicate that the corresponding position of the output data needs to output a pilot, that is, the 3rd and 6th bits of the output data should be output. Pilot; where "0" can indicate that the corresponding position of the output data needs to output a constellation point, then the 1-2, 4-5 bits of the output data should output a constellation point, and the constellation of 1-2, 4-5 bits output The number of points is continuous. For other modulation methods, similar pilot position reservation processing instructions can be set. For different modulation methods, the bit units taken during the pilot position reservation processing are different.
  • the step of the processor 92 performing pre-processing of the channel-encoded data further includes:
  • Subcarrier mapping processing is performed on the data after the pilot position reservation processing.
  • the processor 92 after the processor 92 performs modulation processing on the pre-processed data, performing the following steps before performing multiple input multiple output MIMO precoding processing on the data: And performing pilot mapping processing on the modulated data to map the pilot to a pilot position reserved during the pilot position reservation processing.
  • the pilot-processed data may be subjected to pilot mapping processing to map the pilot to the pilot reserved during the pilot position reservation processing. In the frequency position.
  • the layer mapping processing and the pilot position reservation processing are performed before the modulation processing, thereby making the system unchanged in the unit time, the system It can process more constellation point data when layer mapping and pilot position reservation, and improve processing efficiency.
  • the present invention also provides a computer storage medium, wherein the computer storage medium can store a program, which can include some or all of the steps in various embodiments of the method provided by the present invention.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • connection may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media.
  • a disk and a disc include a compact disc (CD), a laser disc, a disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data.
  • CD compact disc
  • DVD digital versatile disc
  • a floppy disk a disk that stores digital data
  • Blu-ray disc a disc that is usually magnetically copied, and the disc is The laser is used to optically replicate the data.
  • the above combination should also be included in the computer The scope of protection of the readable medium.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Transmission System (AREA)

Abstract

La présente invention concerne le domaine de communications, et en particulier un procédé et un dispositif de traitement de données. Le procédé consiste : à prétraiter les données après le traitement de codage de canal, le prétraitement comprenant un traitement de mise en correspondance de couches; à moduler les données prétraitées; et à effectuer un traitement de précodage à entrées multiples et à sorties multiples sur les données modulées. L'efficacité de traitement du système peut être accrue en mettant en œuvre les modes de réalisation de la présente invention.
PCT/CN2013/073408 2013-03-29 2013-03-29 Procédé et dispositif de traitement de données WO2014153767A1 (fr)

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CN201380000443.4A CN104321992B (zh) 2013-03-29 2013-03-29 数据处理方法及装置

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011041930A1 (fr) * 2009-10-09 2011-04-14 富士通株式会社 Station de base, système de communication multi-antenne et procédé de communication correspondant
CN102318251A (zh) * 2009-02-11 2012-01-11 高通股份有限公司 无线通信系统中用于调制和层映射的方法和装置
EP2469722A2 (fr) * 2009-08-19 2012-06-27 Pantech Co., Ltd. Procédé destiné à transmettre des données dans un système de communication sans fil, dispositif de transmission associé et dispositif de réception et procédé de réception associé

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CN101562503B (zh) * 2008-04-16 2012-06-27 电信科学技术研究院 一种小间距天线阵基站及其多数据流发射方法
CN101515844B (zh) * 2009-01-20 2012-01-18 重庆无线绿洲通信技术有限公司 高效的多用户多元并行传输方法及装置

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CN102318251A (zh) * 2009-02-11 2012-01-11 高通股份有限公司 无线通信系统中用于调制和层映射的方法和装置
EP2469722A2 (fr) * 2009-08-19 2012-06-27 Pantech Co., Ltd. Procédé destiné à transmettre des données dans un système de communication sans fil, dispositif de transmission associé et dispositif de réception et procédé de réception associé
WO2011041930A1 (fr) * 2009-10-09 2011-04-14 富士通株式会社 Station de base, système de communication multi-antenne et procédé de communication correspondant

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