WO2022007699A1 - 数据调制方法、通信设备及存储介质 - Google Patents
数据调制方法、通信设备及存储介质 Download PDFInfo
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- WO2022007699A1 WO2022007699A1 PCT/CN2021/103941 CN2021103941W WO2022007699A1 WO 2022007699 A1 WO2022007699 A1 WO 2022007699A1 CN 2021103941 W CN2021103941 W CN 2021103941W WO 2022007699 A1 WO2022007699 A1 WO 2022007699A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/2615—Reduction thereof using coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/26265—Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
- H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present application relates to the field of communication technologies, for example, to a data modulation method, a communication device, and a storage medium.
- PA power amplifier
- PAPR Peak-to-Average Power Ratio
- the present application provides a data modulation method, a communication device and a storage medium, aiming at reducing the peak-to-average power ratio of a communication signal.
- the embodiment of the present application provides a data modulation method, including:
- a filtering operation is performed on the consecutive B data blocks after the Z zeros are inserted, and the filtered data is transmitted on the physical resource; wherein, B ⁇ 2, Z ⁇ 0.
- Embodiments of the present application further provide a communication device, which includes a memory, a processor, a program stored on the memory and executable on the processor, and a program for implementing the processor and the processor.
- Embodiments of the present application further provide a storage medium for computer-readable storage, where the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to achieve The data modulation method provided by the embodiment.
- the head-end reference signal sequences in consecutive data blocks after data modulation are the same, and the tail-end reference signal sequences are also the same, and the out-of-band leakage is low.
- the filtering operation is performed, the peak-to-average power ratio of the transmitted signal is reduced.
- FIG. 1 is a flowchart of a data modulation method provided by an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a reference signal block and a data block in a time slot provided by an embodiment of the present application.
- FIG. 3 is a flowchart of a data modulation method provided by an embodiment of the present application.
- FIG. 4 is a flowchart of a data modulation method provided by an embodiment of the present application.
- FIG. 5 is a flowchart of a data modulation method provided by an embodiment of the present application.
- FIG. 6 is a flowchart of a data modulation method provided by an embodiment of the present application.
- this embodiment provides a data modulation method, which includes:
- the B consecutive data blocks may be data blocks in the same time slot, or may be data blocks in multiple consecutive time slots.
- a preset modulation operation is performed on consecutive data blocks, and the modulation result is such that the head-end reference signal sequences of all data blocks in consecutive B data blocks are the same, or the tail-end reference signal sequences of all data blocks are the same. , or the head-end reference signal sequences of all data blocks are the same, and the tail-end reference signal sequences of all data blocks are also the same. Then, at least one 0 is inserted between adjacent time domain data of consecutive B data blocks, or no 0 is inserted.
- the peak-to-average ratio can be reduced, and the time-domain data has a certain continuity, and the data between adjacent data blocks will not appear faulty.
- the filtered data can then be transmitted on the physical resource.
- Other filtering operations may also be performed on the data during transmission on the physical resource.
- performing a preset modulation operation on consecutive B data blocks includes: modulating the bit data to be transmitted by using a preset modulation method, and transmitting the modulated data in the consecutive B data blocks .
- performing a preset modulation operation on consecutive B data blocks, and configuring the head-end reference signal sequences of the consecutive B data blocks to be the same and/or the tail-end reference signal sequences to be the same includes:
- the reference signal sequence in the reference signal block and the reference signal sequence and data sequence in the data block in consecutive K time slots are time-domain data sequences modulated by a preset modulation mode; wherein, K ⁇ 1, the consecutive B data sequences the block belongs to the consecutive K time slots;
- one time slot may include N reference signal blocks and M data blocks; wherein, N ⁇ 0, M ⁇ 1.
- consecutive B data blocks may belong to consecutive K time slots. For example, for two consecutive time slots, there is 1 reference signal block and 1 data block in the previous time slot, and there is no reference signal block in the next time slot, but there is 1 data block, so that the data block in the previous time slot and the back The data blocks of a time slot are consecutive.
- B consecutive data blocks may also be in the same time slot.
- inserting Z zeros between adjacent time domain data of the consecutive B data blocks includes: inserting Z zeros between adjacent time domain data in the consecutive K time slots.
- the reference signal block and the data block may be modulated by using the same modulation mode, and the head-end reference signal sequence and/or the tail-end reference signal sequence of the modulated reference sequence is inserted into the corresponding position of the modulated data sequence , so as to realize that all reference signal blocks and data blocks in a time slot have the same head-end reference signal sequence and the same tail-end reference signal sequence.
- the reference signal block and the data block are orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols.
- the adjacent time domain data includes a reference signal sequence and a data sequence.
- the operation of inserting Z 0s between adjacent time domain data performed on B consecutive data blocks is performed, and the operation of inserting 0s is performed on both the reference signal sequence and the data sequence in the data block.
- the preset modulation manner is pi/2 BPSK (Binary Phase Shift Keying, binary phase shift keying) modulation or QPSK (Quadrature Phase Shift Keying, quadrature phase shift keying) modulation or other modulation Way.
- the preset modulation mode may be a plurality of preset modulation modes.
- pi/2 BPSK modulation or QPSK modulation is used for the reference sequence in the reference signal block, and the reference sequence and the data sequence in the data block. After filtering by inserting 0s, the PAPR in the entire slot is very low, and the PAPR for each block in the slot is the same.
- the filtering operation on the consecutive B data blocks after inserting Z zeros includes:
- the spectral filtering characteristic of the filtering operation is that the modulus value of the frequency domain filtering parameter in the middle of the transmission band spectrum is greater than the modulus value of the frequency domain filtering parameter next to it.
- the filtering operation on the consecutive B data blocks after inserting Z zeros includes:
- the filtering parameters of the filtering operation include [1,1].
- the filtering operation on the consecutive B data blocks after inserting Z zeros includes:
- the filtering parameters of the filtering operation include f(p), and the f(p) is:
- the filtering parameters of the filtering operation also include root raised cosine (Root Raised Cosine, RRC) filtering parameters, and the filtering parameters of the filtering operation are:
- RRC is the root raised cosine function parameter
- the filtering operation on the consecutive B data blocks after inserting Z zeros includes:
- a time domain convolution method is used for filtering according to the filtering parameters.
- the time-domain convolution method is circular convolution.
- the head-end reference signal sequences of all reference signal blocks and data blocks in the time slot are the same, and the tail-end reference signal sequences are also the same.
- the beginning and end of all blocks are the same, so that out-of-band leakage is low, and the overall filtering of the slot data is equivalent to a circular convolution operation for each block.
- the filtering operation on the consecutive B data blocks after inserting Z zeros includes:
- the frequency domain data is filtered by using the frequency domain dot product method according to the frequency domain filtering parameters.
- the filtering of the data may be a filtering operation on the time-domain data, or a filtering operation after converting the time-domain data into corresponding frequency-domain data.
- the reference signal block and the data block have the same length.
- the method when the reference signal block and the data block are OFDM symbols, the method further includes:
- a time domain convolution method may be used for filtering.
- the data modulation method will include Fourier transform and inverse Fourier transform operations.
- the frequency domain dot product method will be used for filtering or the time domain convolution method will be used. filter.
- the filtered data is transmitted on physical resources, including;
- FIG. 2 shows a situation in which B consecutive data blocks belong to a time slot structure.
- the head-end reference signal sequences of all reference signal blocks and data blocks in the one time slot are the same, and the tail-end reference signal sequences are also the same.
- the reference signal block is at the head end of the one time slot, and the data block is at the remaining position in the one time slot.
- the reference signal block and all The data block may also be at other positions within the one time slot, and the reference signal block and the data block may also be reference signal symbols and data symbols, that is, both are OFDM symbols.
- the reference signal sequence in this reference signal block is modulated by a preset modulation method, and the first and last reference sequences in the 14 data blocks are also modulated by the same preset modulation mode.
- the rest of the 14 data blocks transmit different data.
- These data sequences are also modulated by a preset modulation method, such as pi/2 BPSK modulation.
- the head-end reference sequence in the data block is the same as the head-end reference sequence [1, j] of the reference signal block, and the tail-end reference sequence of the data block is the same as the tail-end reference sequence in the reference signal block [1, j] -1, j, 1, j] is also the same.
- the length of the reference signal block and the data block is 16. In other implementation manners, the lengths of the reference signal block and the data block may also be other longer lengths, and the head end of the data block refers to The length of the sequence and the length of the tail reference sequence can also be other lengths.
- the filtered data may be subjected to other filtering operations, such as RRC filtering or filtering in a digital to analog converter (Digital to Analog Converter, DAC) module, and the like.
- the filtering operation is to use the time domain convolution method for filtering, and the filtering parameters of the filtering operation are: in,
- the filtered data is [a+bj, a+bj, b+aj, b+aj, a+bj, a-bj, b-aj, -b-aj, -a-bj, -a+bj , -b+aj, -a+bj, -a-bj, -b-aj, -a-bj, -b-aj, -a-bj, -a-bj, -a-bj, b-aj, a-bj, a-bj, b-aj, -b-aj, -a-bj, -aj, -b-aj, -a-bj, -a+bj, -b+aj, b+aj, a+bj, a+bj, b+aj, a+bj, a+bj, b+aj, a+bj, a+
- the head-end reference sequence in the data symbol is the same as the head-end reference sequence [1, j] of the reference signal symbol
- the tail-end reference sequence of the data symbol is the same as the tail-end reference sequence in the reference signal symbol [1, j] -1, j, 1, j] is also the same.
- the time-domain data y(i) can also be transformed into the frequency domain by discrete Fourier transform (Discrete Fourier Transform, DFT) in units of OFDM symbols, and then filtered respectively in the frequency domain operate.
- DFT discrete Fourier Transform
- the filtering operation is frequency-domain dot product filtering, and the filtering parameter of the filtering operation is f(p), and its frequency-domain form is F(i), where in,
- the filtered frequency domain data is transformed into the time domain as [a+bj, a+bj, b+aj, b+aj, a+bj, a-bj, b-aj, -b-aj, - a-bj, -a+bj, -b+aj, -a+bj, -a-bj, -b-aj, -a-bj, -a-bj, -a-bj, -a-bj, -a-bj, -a-bj, b-aj, a-bj, a-bj, b-aj, -b-aj, -a-bj, -aj, -b-aj, -a-bj, -a+bj, -b+aj, b+aj, a+bj, a+bj, a+bj, a+bj, a+bj,
- FIG. 5 is a modulation process of a transmitting end of a data modulation method.
- a set of binary bit data sequences is used as a data source, the binary bit data sequences are encoded, constellation modulation generates a data sequence, and then the data sequence is inserted into the head-end reference signal sequence and the tail-end reference signal sequence of the reference signal, and then the reference signal Insert 0 between the sequence and the data sequence, and then perform filtering operations, digital-to-analog conversion, etc., and transmit on the RF link.
- FIG. 6 shows a modulation process of a transmitter of a data modulation method.
- a set of binary bit data sequences is used as a data source, the binary bit data sequences are encoded, constellation modulation generates a data sequence, and then the data sequence is inserted into the head-end reference signal sequence and the tail-end reference signal sequence of the reference signal, and then the reference signal Insert 0 between the sequence and the data sequence, and then perform DFT, filtering, inverse discrete Fourier transform (Inverse Discrete Fourier Transform, IDFT), digital-to-analog conversion (not shown in the figure), etc., and transmit on the radio frequency link.
- IDFT inverse discrete Fourier transform
- IDFT digital-to-analog conversion
- This embodiment provides a communication device, the communication device includes a memory, a processor, a program stored on the memory and executable on the processor, and a program for implementing the relationship between the processor and the memory
- This embodiment provides a storage medium for computer-readable storage, where the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the embodiment Provided data modulation method.
- the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components Components execute cooperatively.
- Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit .
- Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
- Computer storage media includes both volatile and nonvolatile implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules or other data flexible, removable and non-removable media.
- Computer storage media include but are not limited to random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), electrically erasable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), flash memory or other memory technology, portable Compact Disc Read Only Memory (CD-ROM), Digital Video Disk (DVD) or other optical disk storage, magnetic cartridge, tape, magnetic disk storage or other magnetic storage device, or any other medium that can be used to store desired information and that can be accessed by a computer.
- communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and can include any information delivery media, as is well known to those of ordinary skill in
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Description
Claims (21)
- 一种数据调制方法,包括:对连续B个数据块进行预设调制操作,配置所述连续B个数据块的以下至少之一均相同:首端参考信号序列、或尾端参考信号序列;在所述连续B个数据块的相邻时域数据之间插入Z个0;对插入Z个0后的所述连续B个数据块进行滤波操作,将滤波后的数据在物理资源上传输,其中,B≥2,Z≥0。
- 根据权利要求1所述的方法,其中,所述对连续B个数据块进行预设调制操作,包括:对待传输的比特数据采用预设调制方式进行调制,调制后的数据在所述连续B个数据块里传输。
- 根据权利要求1所述的方法,其中,所述对连续B个数据块进行预设调制操作,配置所述连续B个数据块的以下至少之一均相同:首端参考信号序列、或尾端参考信号序列,包括:连续K个时隙内的参考信号块里的参考信号序列与数据块里的参考信号序列和数据序列为预设调制方式调制的时域数据序列,其中,K≥1,所述连续B个数据块属于所述连续K个时隙内;配置一个所述时隙内所有的参考信号块和数据块的以下至少之一均相同:首端参考信号序列、或尾端参考信号序列。
- 根据权利要求3所述的方法,其中,所述在所述连续B个数据块的相邻时域数据之间插入Z个0,包括:在所述连续K个时隙内相邻时域数据之间插入Z个0。
- 根据权利要求3所述的方法,其中,一个所述时隙内包括N个所述参考信号块和M个所述数据块,其中,N≥0,M≥1。
- 根据权利要求3所述的方法,其中,所述参考信号块和所述数据块为正交频分复用OFDM符号。
- 根据权利要求1所述的方法,其中,所述相邻时域数据包括参考信号序列和数据序列。
- 根据权利要求3所述的方法,其中,所述预设调制方式为pi/2二进制相移键控BPSK调制或正交相移键控QPSK调制。
- 根据权利要求1所述的方法,其中,所述对插入Z个0后的所述连续B个数据块进行滤波操作,包括:所述滤波操作的频谱滤波特性为,传输带频谱中间的频域滤波参数模值大于旁边的频域滤波参数模值。
- 根据权利要求1所述的方法,其中,所述对插入Z个0后的所述连续B个数据块进行滤波操作,包括:所述滤波操作的滤波参数包括[1,1]。
- 根据权利要求11或12所述的方法,其中,所述对插入Z个0后的所述连续B个数据块进行滤波操作,包括:对插入Z个0后的所述连续B个数据块,根据所述滤波参数采用时域卷积方法进行滤波。
- 根据权利要求14所述的方法,其中,所述时域卷积方法为循环卷积。
- 根据权利要求11或12所述的方法,其中,所述对插入Z个0后的所述连续B个数据块进行滤波操作,包括:将插入Z个0后的所述连续B个数据块由时域数据变换为频域数据;将所述滤波参数变换为频域滤波参数;对所述频域数据,根据所述频域滤波参数采用频域点乘方法进行滤波。
- 根据权利要求3所述的方法,其中,所述参考信号块和所述数据块的 长度相同。
- 根据权利要求6所述的方法,其中,在所述参考信号块和所述数据块为OFDM符号的情况下,还包括:在所述对插入Z个0后的所述连续B个数据块进行滤波操作之前,对插入Z个0后的所述时域数据进行傅里叶变换;在所述对插入Z个0后的所述连续B个数据块进行滤波操作之后,对滤波后的频域数据进行反傅里叶变换。
- 根据权利要求1所述的方法,其中,所述将滤波后的数据在物理资源上传输,包括:对所述滤波后的数据进行其他预设滤波操作。
- 一种通信设备,包括:存储器、处理器、存储在所述存储器上并可在所述处理器上运行的程序以及用于实现所述处理器和所述存储器之间的连接通信的数据总线,所述程序被所述处理器执行时实现如权利要求1-19中任一项所述的数据调制方法。
- 一种存储介质,用于计算机可读存储,其中,所述存储介质存储有一个或者多个程序,所述一个或者多个程序可被一个或者多个处理器执行,以实现权利要求1-19中任一项所述的数据调制方法。
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EP21836958.5A EP4181472A1 (en) | 2020-07-07 | 2021-07-01 | Data modulation method, communication device and storage medium |
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CN101409694A (zh) * | 2008-11-06 | 2009-04-15 | 北京韦加航通科技有限责任公司 | 一种单载波频域均衡实现方法及系统 |
CN107431547A (zh) * | 2015-08-03 | 2017-12-01 | 三菱电机株式会社 | 发送装置 |
CN107710651A (zh) * | 2015-08-03 | 2018-02-16 | 三菱电机株式会社 | 发送装置 |
CN111901278A (zh) * | 2020-07-07 | 2020-11-06 | 中兴通讯股份有限公司 | 一种数据调制方法、设备及储存介质 |
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EP1983672A1 (en) * | 2006-02-08 | 2008-10-22 | NEC Corporation | Single carrier transmission system, communication device, and single carrier transmission method used for them |
CN101409694A (zh) * | 2008-11-06 | 2009-04-15 | 北京韦加航通科技有限责任公司 | 一种单载波频域均衡实现方法及系统 |
CN107431547A (zh) * | 2015-08-03 | 2017-12-01 | 三菱电机株式会社 | 发送装置 |
CN107710651A (zh) * | 2015-08-03 | 2018-02-16 | 三菱电机株式会社 | 发送装置 |
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EP4181472A1 (en) | 2023-05-17 |
KR20230035053A (ko) | 2023-03-10 |
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