WO2014153767A1

WO2014153767A1 - Data processing method and device

Info

Publication number: WO2014153767A1
Application number: PCT/CN2013/073408
Authority: WO
Inventors: 符鸿亮; 刘宇
Original assignee: 华为技术有限公司
Priority date: 2013-03-29
Filing date: 2013-03-29
Publication date: 2014-10-02
Also published as: CN104321992B; CN104321992A

Abstract

The present invention relates to the field of communications, and particularly to a data processing method and device. The method comprises: preprocessing data after channel encoding processing, wherein the preprocessing comprises layer mapping processing; modulating the preprocessed data; and conducting multiple-input multiple-output (MIMO) precoding processing on the modulated data. By implementing the embodiments of the present invention, the system processing efficiency can be increased.

Description

Data processing method and device

The present invention relates to the field of communications, and in particular, to a data processing method and apparatus. Background technique

In the Long Term Evolution (LTE) system, Multiple-Input Multiple-Output (MIMO) is used to increase system capacity. 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.

At the transmitting end, the transmitted data needs to be transmitted through multiple antennas after being subjected to MIMO precoding processing. Currently, there is a prior art that before 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.

In the prior art, when the layer mapping process is performed, the number of constellation points that can be processed in a single time is small, and the efficiency is low. Summary of the invention

In view of this, the present invention provides a data processing method and apparatus, which can improve system processing efficiency. 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.

With reference to the first aspect, in a first possible implementation, the pre-processing the channel-encoded data further includes:

The pilot position reservation processing is performed on the data after the layer mapping processing.

In conjunction with the first possible implementation of the first aspect, in the second possible implementation, the pre-processing the channel-encoded data further includes:

Subcarrier mapping processing is performed on the data after the pilot position reservation processing.

In combination with the first possible implementation of the first aspect or the second possible implementation, in the third In a possible implementation manner, before performing the multiple input multiple output MIMO precoding process on the modulated data, the method further includes:

And performing pilot mapping processing on the modulated data to map the pilot to a pilot position reserved during the reservation processing of the pilot position.

With reference to the first aspect to any one of the second possible implementation manners of the first aspect, in a fourth possible implementation, the performing layer mapping processing on the channel-coded data includes:

And performing a layer mapping process on the channel data stream of the channel-coded user according to the modulation mode corresponding to the bit stream of the user and the set layer mapping mode, where the modulation mode is used to indicate bit data corresponding to each constellation point, The layer mapping mode is used to indicate the number of layers to be mapped.

With reference to the first possible implementation manner or the second possible implementation manner of the first aspect, in a fifth possible implementation manner, performing pilot location reservation processing on the layer mapping processed data includes:

And performing 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.

With reference to the fifth possible implementation of the first aspect, in a sixth possible implementation, the pilot position indicator is a bit data string, and 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; and a precoding module, configured to perform multiple input and multiple output on the data modulated by the adjustment module

MIMO precoding processing.

With reference to the second aspect, in a first possible implementation, the pre-processing module includes: a layer mapping processing module, configured to perform layer mapping processing on the channel-encoded data. With reference to the first possible implementation of the second aspect, in a second possible implementation, 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.

With reference to the second possible implementation of the second aspect, in a third possible implementation, 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.

With reference to the second possible implementation manner of the second aspect, or the third possible implementation manner, in a fourth possible implementation manner, between the modulation module and the pre-coding 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.

With reference to the second aspect to any one of the second possible implementation manners of the second aspect, in a fifth possible implementation, 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.

With reference to the second possible implementation manner or the third possible implementation manner of the second aspect, in a sixth possible implementation manner, 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.

With reference to the sixth possible implementation of the second aspect, in a seventh possible implementation, the pilot position indicator is a bit data string, and 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:

With reference to the third aspect, in a first possible implementation, the step of the processor performing pre-processing of the channel-encoded data further includes:

In conjunction with the first possible implementation of the third aspect, in a second possible implementation, the step of the processor performing pre-processing of the channel-encoded data further includes:

With reference to the first possible implementation manner or the second possible implementation manner of the third aspect, in a third possible implementation manner, the processor performs multiple input multiple output MIMO precoding processing on the modulated data. Before, also perform the following steps:

With reference to the third aspect to any one of the second possible implementation manners of the first aspect, in a fourth possible implementation, 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.

With reference to the first possible implementation manner of the third aspect, or the second possible implementation manner, in a fifth possible implementation manner, the processor performs pilot position reservation on the data processed by the layer mapping process. The specific treatment includes:

In conjunction with the fifth possible implementation of the third aspect, in a sixth possible implementation, 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.

It can be seen from the above that in some feasible embodiments of the present invention, 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. DRAWINGS

1 is a schematic flow chart of a first embodiment of a data processing method according to the present invention;

2 is a schematic diagram of a principle of performing layer mapping processing according to an embodiment of the present invention;

3 is a schematic flow chart of a second embodiment of a data processing method according to the present invention;

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. Specific embodiment

The invention will now be described in detail by way of specific examples.

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. In some feasible implementation manners, in 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.

For example, referring to FIG. 2, where A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode, and for each of the constellation points A for the same modulation mode (0), 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. For example, for QPSK (Quadature Phase Shift Keying) modulation, the bits included in each constellation point A(0), A(l), ... A(N-1) (bit) number is

2bit; For 16QAM (Quadature Amplitude Modulation) modulation mode, the bits (bit) included in each constellation point A(0), A(l), ... A(N-1) The number is 4bit; for

In the 64QAM modulation mode, 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.

In some feasible implementations, layer mapping processing may be implemented by instructions. For example, for the modulation mode of QPSK, the instruction for performing layer mapping may be: SEL_IQ - QPSK:. When executing the SEL-IQ-QPSK instruction, 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. When the SEL-QQ-QPSK instruction is executed, the system maps the bit data to different layers in units of 2 bits according to the layer mapping mode indication. For example, 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. in. Corresponding to Fig. 2, A(0) includes the l-2bit of the data, A(l) includes the 3-4th bit of the data, and A(2) includes the 5th bit of the data. For other modulation methods, similar layer mapping processing instructions can be set. For different modulation methods, the bit units taken during layer mapping are different.

It can be seen from the above that in some embodiments of the present invention, 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.

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.

In some feasible implementation manners, in 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.

In some feasible implementations, layer mapping processing may be implemented by instructions. For example, for the modulation mode of QPSK, the instructions for performing layer mapping may be: SEL_IQ - QPSK:. When the SEL-QQ-QPSK instruction is executed, 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. When the SEL-QQ-QPSK instruction is executed, the system maps the bit data to different layers in units of 2 bits according to the layer mapping mode indication. For example, 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. in. Corresponding to Fig. 2, A(0) includes the l-2bit of the data, A(l) includes the 3-4bit of the data, and A(2) includes the 5-6th bit of the data. For other modulation methods, similar layer mapping processing instructions can be set. For different modulation methods, the bit units taken during layer mapping are different.

In some feasible implementation manners, in step S311, 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.

In some possible implementations, 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. 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. 4, 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). among them

RS represents the pilot position, N represents the data length before the pilot position is reserved, and Nrs is the number of pilot positions reserved for the pilot.

In some feasible implementation manners, 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:. 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. ZEROINS— BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved. When the ZEROINS-BITMAP-QPSK instruction is executed, the system will follow the indication of the pilot position indicator. 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, and the length of the bit of the bit data string is N+Nrs. For example, if 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 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. 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.

After the process of step S311 is performed, in 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.

It can be seen from the above that in some embodiments of the present invention, 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.

In some feasible implementation manners, in 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.

In some feasible implementation manners, in step S511, 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. In some possible implementations, 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. 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. 3, 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

ZEROINS — BITMAP — QPSK:. When executing the ZEROINS_BITMAP_QPSK instruction, 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. When the ZEROINS_BITMAP_QPSK instruction is executed, 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.

After the processing of step S511 is performed, in step S514, the pilot-processed data may be subjected to pilot mapping processing to map the pilot to the pilot position reserved during the pilot position reservation processing. on.

It can be seen from the above that in some embodiments of the present invention, layer mapping processing and pilot position reservation processing are performed. And 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.

In addition, in order to reduce the number of instructions, various modulation method processing methods are unified. The foregoing embodiments of the present invention can increase the bit width extension process before layer mapping, and extend the modulation order of different bit widths to the same bandwidth. .

For example, 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.

Take BIT-EXPAND-QPSK as an example to illustrate the function of the instruction:

BIT—EXPAND—The input to the QPSK instruction is: BIT data to be processed and bit width extension indicator. The bit width extension indicator is used to indicate the expanded bit width. For example, it is 8bit.

BIT—EXPAND—The output of the QPSK instruction is: BIT data after bit width expansion.

For example, when the bit width of 2BIT is expanded to an 8BIT bit width for output, the high 6BIT is directly filled with 0.

Correspondingly, embodiments of the present invention also provide an embodiment of an apparatus item that can be used to implement the foregoing method embodiments.

Figure 6 is a block diagram showing the structure of a first embodiment of the apparatus for data processing of the present invention. As shown in FIG. 6, it may include: a channel coding module 61, a pre-processing module 62, a modulation module 63, and a pre-encoding module 64, where:

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. In this embodiment, the pre-processing module 62 includes: a layer mapping processing module 622. Used to perform layer mapping processing on channel-encoded data.

The modulation module 63 is configured to perform modulation processing on the data preprocessed by the preprocessing module 62. The precoding module 64 is configured to modulate the module 63 to modulate the processed data for MIMO precoding processing.

In some feasible implementation manners, the layer mapping processing module 622 can perform channel coding on the channel-encoded user according to the modulation mode corresponding to the user's bit data stream and the set layer mapping mode. The layer mapping process 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.

As can be seen from the above, in some embodiments of the present invention, 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.

Figure 7 is a block diagram showing the structure of a second embodiment of the apparatus for data processing of the present invention. Figure 7 As shown, it may include: a channel coding module 71, a pre-processing module 72, a modulation module 73, a pilot mapping module 74, and a pre-encoding module 75, where:

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. In this embodiment, 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.

In some feasible implementation manners, 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.

In the 64QAM modulation mode, 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. Where 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.

In some feasible implementation manners, 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, and the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points. .

In some feasible implementation manners, the pilot position reservation processing may be implemented by using an instruction, for example, For QPSK modulation, the instructions that can be used to perform pilot location reservation processing are: 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. ZEROINS— BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved. When the ZEROINS_BITMAP_QPSK instruction is executed, 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.

After the processing by the pilot position reservation processing module 723, 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.

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. In this embodiment, 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.

In some feasible implementation manners, 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.

2bit; For 16QAM (Quadature Amplitude Modulation) modulation, the number of bits (bits) included in each constellation point A(0), A(l), ... A(Nl) is 4bit; for

In some feasible implementations, layer mapping processing may be implemented by instructions. For example, for the modulation mode of QPSK, the instructions for performing layer mapping may be: SEL_IQ - QPSK:. When the SEL-QQ-QPSK instruction is executed, 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. When 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. In the case of mode 0, the bit data is mapped into two layers in units of 2 bits; 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. Corresponding to Fig. 2, A(0) includes the l-2bit of the data, A(l) includes the 3-4bit of the data, and A(2) includes the 5-6th bit of the data. For other modulation methods, similar layer mapping processing instructions can be set. For different modulation methods, the bit units taken during layer mapping are different.

In some feasible implementation manners, 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, and the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points. .

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. ZEROINS— BITMAP—The output of the QPSK instruction is: BIT data after the pilot position is reserved. When the ZEROINS_BITMAP_QPSK instruction is executed, 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. And 6 bits should output the pilot; where "0" can indicate that the corresponding position of the output data needs to output the constellation point, then the 1-2th, 4-5th bits of the output data should output the constellation point, and 1-2, 4- The number of constellation points of the 5-bit output is consecutive. 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.

After the processing by the pilot position reservation processing module 823, 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.

Figure 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.

And modulating the preprocessed data;

In some feasible implementation manners, 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.

For example, referring to FIG. 2, where A(0), A(l), ..., A(Nl) respectively represent different constellation points in the same modulation mode, and for each of the constellation points A for the same modulation mode (0), 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. For example, for QPSK (Quarature Phase Shift Keying) Control) modulation mode, the number of bits (bits) included in each constellation point A(0), A(l), ... A(N-1) is

In some possible implementations, the step of the processor 92 performing pre-processing of the channel-encoded data further includes:

In some feasible implementation manners, 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, and the pilot position indicator is used to indicate an insertion position of the pilot between the constellation points.

In some possible implementations, 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 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. 3, 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

In some possible implementation manners, 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.

After the pilot position reservation processing is performed before the modulation 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.

In a specific implementation, 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).

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware implementation, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. 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. By way of example and not limitation, 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. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if 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, then the 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. As used in the present invention, 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. The above combination should also be included in the computer The scope of protection of the readable medium.

In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Rights request

1. A data processing method, characterized by including:

The data after channel coding is preprocessed, and the preprocessing includes layer mapping processing. and perform modulation processing on the preprocessed data;

Perform multiple-input multiple-output MIMO precoding on the modulated data.

2. The data processing method according to claim 1, wherein the preprocessing of the channel-coded data further includes:

Pilot position reservation processing is performed on the data after the layer mapping process.

3. The data processing method according to claim 2, wherein the preprocessing of the channel-coded data further includes:

4. The data processing method according to claim 2 or 3, characterized in that, before performing multiple-input multiple-output MIMO precoding processing on the modulated data, it further includes:

Pilot mapping processing is performed on the modulated data to map pilots to pilot positions reserved during the pilot position reservation processing.

5. The data processing method according to any one of claims 1-3, characterized in that the layer mapping process on the channel-coded data includes:

Perform layer mapping processing on the user's bit data stream after channel coding 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 the bit data corresponding to each constellation point, The layer mapping mode is used to indicate the number of layers for mapping.

6. The data processing method according to claim 2 or 3, characterized in that, performing pilot position reservation processing on the data after the layer mapping process, including:

The data after the layer mapping process is subjected to pilot position reservation processing according to the modulation mode corresponding to the user's bit data stream and the set pilot position indicator, where the modulation mode is used to indicate that every indicated pilot The insertion position between each constellation point.

7. The data processing method according to claim 6, wherein the pilot position indicator is a bit data string, and the length of the bit data string is equal to the satellite corresponding to the user's bit data stream. The sum of the number of constellation points and the number of pilots that need to be inserted, the bits with different values in the bit data string respectively represent the pilot position and the constellation point position.

8. A data processing device, characterized by including:

Channel coding module, used for channel coding processing of data;

A preprocessing module, used to preprocess the data processed by the channel coding module, where the preprocessing includes layer mapping processing;

Modulation module, used to modulate the data preprocessed by the preprocessing module; Precoding module, used to perform multiple input and multiple output on the data modulated by the adjustment module.

MIMO precoding processing.

9. The data processing device according to claim 8, characterized in that the preprocessing module includes:

The layer mapping processing module is used to perform layer mapping processing on the channel-coded data.

10. The data processing device according to claim 9, characterized in that the preprocessing module further includes:

A pilot position reservation module is used to perform pilot position reservation processing on the data after layer mapping processing by the layer mapping module.

11. The data processing device according to claim 10, characterized in that the preprocessing module further includes:

The subcarrier mapping processing module is used to perform subcarrier mapping processing on the data after the pilot position reservation processing by the pilot position reservation module.

12. The data processing device according to claim 10 or 11, further comprising: between the modulation module and the precoding module:

A pilot mapping module, configured to perform pilot mapping processing on the data modulated by the modulation module, so as to map pilots to pilots reserved during pilot position reservation processing by the pilot position reservation module. position, so that the precoding processing module performs multiple-input multiple-output MIMO precoding processing on the data after the pilot mapping process by the pilot mapping module.

13. The data processing device according to any one of claims 8 to 11, characterized in that the layer mapping processing module is specifically configured to map the data according to the modulation mode corresponding to the user's bit data stream and the set layer mapping mode. The channel-coded user bit data stream is subjected to layer mapping processing, where the modulation The mode is used to indicate the bit data corresponding to each constellation point, and the layer mapping mode is used to indicate the number of layers for mapping.

14. The data processing device according to claim 10 or 11, wherein the pilot position reservation module is specifically configured to pair the pilot position indicator according to the modulation mode corresponding to the user's bit data stream and the set pilot position indicator. The data after the layer mapping process is subjected to pilot position reservation processing, wherein the modulation frequency position indicator is used to indicate the insertion position of the pilot between each constellation point.

15. The data processing device according to claim 14, wherein 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 user's bit data stream. The sum of the number and the number of pilots to be inserted, the bits with different values in the bit data string respectively represent the pilot position and the constellation point position.

16. A data processing device, characterized in that it includes a memory and a processor. The processor calls the program stored in the memory and performs the following steps:

Perform multiple-input multiple-output MIMO precoding on the modulated data.

17. The data processing device according to claim 16, wherein the step of preprocessing the channel-coded data by the processor further includes:

18. The data processing device according to claim 17, wherein the step of preprocessing the channel-coded data by the processor further includes:

19. The data processing device according to claim 17 or 18, wherein the processor further performs the following steps before performing multiple-input multiple-output MIMO precoding processing on the modulated data:

20. The data processing device according to any one of claims 16 to 18, wherein the processor performs layer mapping processing on the channel-coded data, which specifically includes: Perform layer mapping processing on the user's bit data stream after channel coding 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 the bit data corresponding to each constellation point, The layer mapping mode is used to indicate the number of layers for mapping.

21. The data processing device according to claim 17 or 18, wherein the processor performs pilot position reservation processing on the data after the layer mapping process specifically includes:

22. The data processing device according to claim 21, wherein 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 user's bit data stream. The sum of the number and the number of pilots to be inserted, the bits with different values in the bit data string respectively represent the pilot position and the constellation point position.

23. A computer storage medium, which may include computer-executable instructions, so that when the processor of the computer executes the instructions, the computer performs the method of any one of claims 1-8 of the present invention.