WO2020238573A1 - 信号处理方法及装置 - Google Patents

信号处理方法及装置 Download PDF

Info

Publication number
WO2020238573A1
WO2020238573A1 PCT/CN2020/088919 CN2020088919W WO2020238573A1 WO 2020238573 A1 WO2020238573 A1 WO 2020238573A1 CN 2020088919 W CN2020088919 W CN 2020088919W WO 2020238573 A1 WO2020238573 A1 WO 2020238573A1
Authority
WO
WIPO (PCT)
Prior art keywords
pilot
indication information
pilot sequence
delay
doppler domain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/088919
Other languages
English (en)
French (fr)
Inventor
马千里
陈磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2020238573A1 publication Critical patent/WO2020238573A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L23/00—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
    • H04L23/02—Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 adapted for orthogonal signalling
    • 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
    • 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
    • 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
    • H04L27/262—Reduction thereof by selection of pilot symbols

Definitions

  • the embodiments of the present application relate to communication technologies, and in particular, to a signal processing method and device.
  • Orthogonal Time Frequency & Space (OTFS) technology is a new two-dimensional modulation technology. Its main technical feature is to place signals (for example: constellation symbols) in the newly created time delay-Doppler domain. Above, and through the two-dimensional dual Fourier transform and the traditional time-frequency domain equivalent transformation, and finally form the common code division multiple access (CDMA), time division multiple access (time division multiple access, TDMA) or frequency division multiple access (FDMA) waveform for transmission.
  • CDMA common code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OTFS technology is especially suitable for high-speed moving scenes due to its newly expanded Doppler domain. For example: a highway scene with a speed of 120km/h, or a high-speed rail scene with a speed of 500km/h, etc.
  • the sending device can perform time delay-Doppler domain signal mapping on the data information and pilot information, map the data information and pilot information to the time delay-Doppler domain, and then perform the OTFS encoding operation to convert the time delay-Doppler domain.
  • the Le domain signal is mapped to the time-frequency domain, and then the dimension change processing is performed to generate the baseband waveform processing flow.
  • the modulated waveform is sent to the receiving device through the power amplifier. That is, OTFS technology moves the digital signal processing to the time delay-Doppler domain.
  • the time delay-Doppler domain is a two-dimensional orthogonal mapping of the time-frequency domain. Through two-dimensional orthogonal mapping, the time-frequency domain changing channel is energy-averaged in the time-delay-Doppler domain. Therefore, the equivalent channel in the delay-Doppler domain has stability, distinguishability and orthogonality of the delay-Doppler information compared with the channel in the time-frequency domain.
  • the sending device performs time-delay-Doppler-domain signal mapping and OTFS encoding operations on the data information and pilot information to obtain the time-domain signal
  • the time-domain signal will have a high impact, resulting in an excessively high peak-to-average value. Ratio, causing signal distortion.
  • the embodiments of the present application provide a signal processing method and device to reduce the peak-to-average ratio in the communication process, reduce signal distortion, and improve communication quality.
  • an embodiment of the present application provides a signal processing method.
  • the method may include: a sending device acquires a pilot sequence, the sending device maps the pilot sequence to a pilot region in the delay-Doppler domain, and the pilot The cyclic prefix of the sequence is mapped to the guard interval in the delay-Doppler domain, the data signal is mapped to the data area in the delay-Doppler domain, and the delay-Doppler domain signal is obtained, where the pilot sequence is located in the pilot For all lines in the frequency region, the sending device sends a transmission signal to the receiving device, and the transmission signal is obtained by processing the delay-Doppler domain signal.
  • the sending device maps the pilot sequence to all rows in the pilot region of the delay-Doppler domain, so that the energy of the pilot sequence is dispersed in the delay domain of the entire pilot region, which can avoid time delay.
  • the Doppler domain signal undergoes an OTFS encoding operation, there is an impact signal with higher energy, which can reduce the peak-to-average ratio during the communication between the sending device and the receiving device, reduce signal distortion, and improve communication quality.
  • the guard interval is the same as the last L row of the pilot area; L is greater than or equal to 1.
  • the delay-Doppler domain includes N*M resource units, where the pilot area may include k*m resource units, and the guard interval is the same as the last L rows and m columns of the pilot area.
  • the pilot sequences are located in the same column or different columns in the pilot area.
  • the pilot sequence may include k*n elements, n takes any value from 2 to m, and the resource unit that carries the k*n elements in the pilot region is located adjacent to or out of phase in the pilot region. In adjacent n columns.
  • the pilot sequence is located in adjacent or non-adjacent n columns of the pilot region, and the n is greater than 1.
  • the delay-Doppler domain may also include a protection area, the protection area is located between the pilot area and the data area, and the signal mapped to the protection area is 0.
  • the pilot area and the data area are separated by the protection area to prevent the pilot sequence of the pilot area from leaking into the data area after passing through the channel, and to eliminate the interference of the pilot sequence leakage in the data signal.
  • the method may further include: the sending device receives at least one of the following information: first indication information, where the first indication information is used to indicate that the pilot area is in the delay-Doppler Position in the domain; second indication information, the second indication information is used to indicate the location of the resource unit that carries the pilot sequence; third indication information, the third indication information is used to indicate the pilot sequence; or, the fourth indication The fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • the position of the pilot region in the time delay-Doppler domain, the position of the resource unit carrying the pilot sequence, the pilot sequence, and the protection region can be flexibly and dynamically indicated by the above-mentioned at least one kind of indication information.
  • One or more of the positions in the extended-Doppler domain can be flexibly and dynamically indicated by the above-mentioned at least one kind of indication information.
  • the method may further include: the sending device sends at least one of the following information: first indication information, the first indication information is used to indicate that the pilot area is in the delay-Doppler Position in the domain; second indication information, the second indication information is used to indicate the location of the resource unit that carries the pilot sequence; third indication information, the third indication information is used to indicate the pilot sequence; or, fourth Indication information, where the fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • first indication information the first indication information is used to indicate that the pilot area is in the delay-Doppler Position in the domain
  • second indication information the second indication information is used to indicate the location of the resource unit that carries the pilot sequence
  • third indication information the third indication information is used to indicate the pilot sequence
  • fourth Indication information where the fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • an embodiment of the present application provides a signal processing method.
  • the method may include: a receiving device receives a transmission signal sent by a sending device, the transmission signal is obtained by processing a delay-Doppler domain signal, and the time
  • the extended-Doppler domain signal includes: a pilot region for mapping a pilot sequence, a guard interval for mapping a cyclic prefix of the pilot sequence, and a data region for mapping a data signal, and the pilot sequence is located in all parts of the pilot region.
  • the receiving device performs channel estimation based on the time delay-Doppler domain signal and the pilot sequence.
  • the guard interval is the same as the last L row of the pilot area; L is greater than or equal to 1.
  • the pilot sequences are located in the same column or different columns in the pilot area.
  • the pilot sequence is located in n adjacent or non-adjacent columns of the pilot area, and n is greater than 1.
  • the time delay-Doppler domain signal further includes a protection area where the mapping signal is 0, and the protection area is located between the pilot area and the data area.
  • the method may further include: the receiving device sends at least one of the following information: first indication information, the first indication information is used to indicate that the pilot area is in the delay-Doppler Position in the domain; second indication information, the second indication information is used to indicate the location of the resource unit that carries the pilot sequence; third indication information, the third indication information is used to indicate the pilot sequence; or, the fourth indication The fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • the method may further include: the receiving device receives at least one of the following information: first indication information, the first indication information is used to indicate that the pilot area is in the delay-Doppler Position in the domain; second indication information, the second indication information is used to indicate the location of the resource unit that carries the pilot sequence; third indication information, the third indication information is used to indicate the pilot sequence; or, the fourth indication Information, the fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • first indication information the first indication information is used to indicate that the pilot area is in the delay-Doppler Position in the domain
  • second indication information the second indication information is used to indicate the location of the resource unit that carries the pilot sequence
  • third indication information the third indication information is used to indicate the pilot sequence
  • fourth indication Information the fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • an embodiment of the present application provides a wireless communication device, which may be a sending device or a chip in the sending device.
  • the device has the function of realizing the transmission equipment involved in the above embodiments. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the device when the device is a transmitting device, the device may include a processing module and a transceiver module.
  • the processing module may be a processor, for example, the transceiver module may be a transceiver, and the transceiver may include Radio frequency circuit and baseband circuit.
  • the device may further include a storage unit, and the storage unit may be a memory, for example.
  • the storage unit is used to store computer-executable instructions
  • the processing module is connected to the storage unit, and the processing module executes the computer-executable instructions stored in the storage unit, so that the sending device executes the aforementioned sending device Functional signal processing method.
  • the chip when the device is a chip in a sending device, the chip includes: a processing module and a transceiver module.
  • the processing module may be a processor, for example, and the transceiver module may be an input on the chip. /Output interface, pin or circuit, etc.
  • the apparatus may further include a storage unit, and the processing module can execute computer-executable instructions stored in the storage unit, so that the chip in the sending device executes any of the above-mentioned signal processing methods involving the function of the sending device.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit may also be a storage unit located outside the chip in the sending device, such as a read-only memory (ROM for short) Or other types of static storage devices that can store static information and instructions, random access memory (RAM for short), etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above can be a general-purpose central processing unit (Central Processing Unit, CPU for short), microprocessor, application-specific integrated circuit (ASIC for short), or one or A plurality of integrated circuits used to control the program execution of the above-mentioned signal processing methods.
  • CPU Central Processing Unit
  • ASIC application-specific integrated circuit
  • this application provides a wireless communication device, which may be a receiving device or a chip in the receiving device.
  • the device has the function of realizing the above-mentioned various aspects related to the embodiments of the receiving device. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • the device when the device is a receiving device, the device may include: a processing module and a transceiver module.
  • the processing module may be a processor, for example, the transceiver module may be a transceiver, and the transceiver includes The radio frequency circuit, optionally, the device further includes a storage unit, and the storage unit may be a memory, for example.
  • the storage unit is used to store computer-executable instructions
  • the processing module is connected to the storage unit, and the processing module executes the computer-executable instructions stored in the storage unit, so that the device executes any of the above aspects involving receiving The signal processing method of the equipment function.
  • the chip when the device is a chip in a receiving device, the chip includes a processing module and a transceiver module.
  • the processing module may be a processor, for example, and the transceiver module may be on the chip.
  • the processing module can execute the computer-executable instructions stored in the storage unit, so that the chip in the receiving device executes the above-mentioned signal processing methods involving the functions of the receiving device.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the access point, such as a ROM or Other types of static storage devices, RAM, etc. that store static information and instructions.
  • the processor mentioned in any of the foregoing may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits used to control the execution of the program of the foregoing signal processing method.
  • a computer storage medium is provided, and program code is stored in the computer storage medium, and the program code is used to instruct the execution of any one of the first aspect to the second aspect or any possible implementation manner thereof Method of instruction.
  • a processor configured to be coupled with a memory, and configured to execute any one of the foregoing first to second aspects or a method in any possible implementation manner thereof.
  • a computer program product containing instructions which when running on a computer, causes the computer to execute any one of the first to second aspects or the method in any possible implementation manner thereof.
  • a communication system which includes: a sending device in any possible implementation manner of the foregoing third aspect and a receiving device in any possible implementation manner of the fourth aspect.
  • the sending device obtains the pilot sequence
  • the sending device maps the pilot sequence to the pilot region of the delay-Doppler domain, and maps the cyclic prefix of the pilot sequence to the delay-
  • the guard interval of the Doppler domain maps the data signal to the data area of the time delay-Doppler domain to obtain the time delay-Doppler domain signal, where the pilot sequence is located in all rows of the pilot area
  • the sending device sends a transmission signal, which is obtained by processing the delay-Doppler domain signal, and the receiving device performs channel estimation according to the delay-Doppler domain signal and the pilot sequence, thereby realizing the transmission device and the receiver
  • the sending device maps the pilot sequence to all rows in the pilot area of the delay-Doppler domain, so that the energy of the pilot sequence is dispersed in the delay domain of the entire pilot area, which can avoid time delay.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the application
  • FIG. 2 is a schematic diagram of another application scenario of an embodiment of the application.
  • 3 is a schematic diagram of the mapping relationship between time delay-Doppler domain and time-frequency domain according to an embodiment of the application;
  • FIG. 4 is a flowchart of a signal processing method according to an embodiment of the application.
  • FIG. 5 is a schematic diagram of a delay-Doppler domain according to an embodiment of this application.
  • FIG. 6 is a schematic diagram of another delay-Doppler domain according to an embodiment of this application.
  • FIG. 7 is a schematic diagram of another delay-Doppler domain according to an embodiment of this application.
  • FIG. 8 is a schematic diagram of another delay-Doppler domain according to an embodiment of this application.
  • FIG. 9 is a schematic diagram of a pilot sequence placement method according to an embodiment of the application.
  • FIG. 10 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • FIG. 11 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • FIG. 12 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • FIG. 13 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • FIG. 14 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • 15 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • 16 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • FIG. 17 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • FIG. 18 is a schematic diagram of a signal processing method of a sending device according to an embodiment of the application.
  • FIG. 19 is a schematic diagram of a signal processing method of a receiving device according to an embodiment of the application.
  • FIG. 21 is a schematic structural diagram of a wireless communication device provided by an embodiment of this application.
  • 22 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 23 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • FIG. 24 is a schematic structural diagram of another wireless communication device provided by an embodiment of this application.
  • the network equipment involved in this application refers to equipment that can communicate with terminal equipment.
  • the network device can be an access network device, a relay station, or an access point.
  • the network equipment can be a base transceiver station (BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA) network, or it can be
  • the base station (NodeB, NB) in the Wideband Code Division Multiple Access (WCDMA) may also be the evolution base station (Evolutional NodeB, eNB or eNodeB) in the Long Term Evolution (LTE).
  • the network device may also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • cloud radio access network cloud radio access network, CRAN
  • the network device may also be a network device in a 5G network or a network device in a public land mobile network (Public Land Mobile Network, PLMN) that will evolve in the future.
  • the network device can also be a wearable device or a vehicle-mounted device.
  • the terminal equipment involved in this application refers to a communication device with a communication function.
  • it may be a wireless communication device, an Internet of Things (IoT) device, a wearable device or a vehicle-mounted device, a mobile terminal, a customer premise equipment (Customer Premise Equipment, CPE), etc.
  • the mobile terminal may also be called User Equipment (User Equipment, UE for short), access terminal, user unit, user station, mobile station, mobile station, user terminal, terminal, wireless communication equipment, user agent, or user device.
  • IoT Internet of Things
  • CPE Customer Premise Equipment
  • the mobile terminal may also be called User Equipment (User Equipment, UE for short), access terminal, user unit, user station, mobile station, mobile station, user terminal, terminal, wireless communication equipment, user agent, or user device.
  • User Equipment User Equipment
  • the mobile terminal can be a smart phone, a cellular phone, a cordless phone, a tablet computer, a personal digital assistant (PDA) device, an IoT device with wireless communication function, a computing device, or other processing device connected to a wireless modem , In-vehicle equipment, wearable equipment, terminal equipment in 5G network or terminal equipment in the future evolved PLMN network, etc.
  • PDA personal digital assistant
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the application.
  • the application scenario may include a sending device and a receiving device.
  • the sending device may be a terminal device of any form mentioned above, and correspondingly, the receiving device may be a network device of any form mentioned above.
  • the sending device may be a network device in any of the foregoing forms, and correspondingly, the receiving device may be a terminal device in any of the foregoing forms.
  • the sending device sends a transmission signal to the receiving device through the signal processing method of the present application, the transmission signal is obtained by processing the time delay-Doppler domain signal, and the receiving device receives the transmission signal according to the time delay-Doppler signal and
  • the pilot sequence is used for channel estimation, so as to realize the communication between the sending device and the receiving device.
  • the sending device maps the pilot sequence to all rows of the pilot region in the delay-Doppler domain, so that the energy of the pilot sequence is dispersed In the time delay domain of the entire pilot region, it can avoid the presence of high-energy impact signals after the time delay-Doppler domain signal undergoes OTFS encoding operation, which can reduce the peak-to-average ratio in the communication process, reduce signal distortion, and improve communication quality.
  • OTFS encoding operation
  • FIG. 2 is a schematic diagram of another application scenario of an embodiment of the application.
  • the application scenario is illustrated by taking a base station (BS) and three UEs as an example, where: The three UEs are UE0, UE1, and UE2.
  • UE0 can use the DFT-S-OFDM waveform modulation method used for uplink transmission in the LTE system to communicate with the BS.
  • UE0 can be used as a transmitting device, and the BS can be used as a receiving device.
  • the UE1 can use the OFDM waveform modulation method used for downlink transmission in the LTE system to communicate with the BS.
  • the UE1 can be used as a receiving device, and the BS can be used as a transmitting device.
  • UE2 can use the CDMA waveform modulation method to communicate with the BS.
  • the foregoing application scenarios may be high-speed communication scenarios, MTC communication scenarios, high-frequency large-bandwidth communication scenarios, and the like.
  • the waveform between the BS and the UE is only an example, the waveform can also be any other known waveforms, and different waveforms can be selected for different modulations.
  • the sending device of this application generates Delay-Doppler domain signals can be modulated with arbitrary waveforms.
  • the time delay-Doppler domain referred to in this application refers to a two-dimensional domain different from the time-frequency domain.
  • One dimension represents the time delay domain and the other dimension represents the Doppler domain.
  • the The time delay-Doppler domain can be represented by a D matrix of N*M.
  • the delay-Doppler domain may be composed of N*M resource units, and one resource unit occupies one grid of the delay domain and one grid of the Doppler domain.
  • a grid in the delay domain is a unit ⁇ in the delay domain, and ⁇ represents the interval of signals in the delay domain. The unit is seconds.
  • N is the number of grids in the delay domain.
  • ⁇ f is the subcarrier spacing of frequency.
  • the time delay domain grid represents an interval of ⁇ time, sending a message.
  • the time delay domain interval of the two-dimensional channel exhibited in the time delay-Doppler domain is the grid unit ⁇ time to send one message.
  • a grid of the Doppler domain is a Doppler domain unit v
  • v represents the interval of Doppler domain signals
  • the unit is Hz, which characterizes the interval of Doppler domain signals. That is, the Doppler grid represents a frequency interval separated by v, and a message is sent.
  • the Doppler domain interval of the two-dimensional channel exhibited in the time delay-Doppler domain is the grid unit v frequency to send one message.
  • FIG. 3 is a schematic diagram of the mapping relationship between the delay-Doppler domain and the time-frequency domain according to an embodiment of the application.
  • the time The delay domain can be mapped to the frequency domain
  • the Doppler domain can be mapped to the time domain.
  • the time delay-Doppler domain signal in the embodiment of the present application can be converted into a time-frequency domain signal
  • the time-frequency domain signal is also Can be converted into time delay-Doppler domain signal.
  • the physical meaning of a signal at any point (for example, (n, m)) in the time-frequency domain signal is a signal on the nth frequency domain in the mth unit time.
  • M and N can take any values.
  • M can be a multiple of 2
  • N can be a multiple of 14.
  • Fig. 4 is a flowchart of a signal processing method according to an embodiment of the application. As shown in Fig. 4, this embodiment relates to a sending device and a receiving device. The method of this embodiment may include:
  • Step 101 The sending device obtains a pilot sequence.
  • the pilot sequence is used by the receiving device for channel estimation.
  • the pilot sequence may include any one of a ZC sequence, any column vector of a unitary matrix, a pi/2-BPSK sequence or a pi/4-QPSK sequence, and it may also be other sequences, which will not be illustrated here. .
  • the pilot sequence can be preset or configured by network equipment, which can be flexibly set according to requirements.
  • the sending device is a terminal device, and the pilot sequence obtained by the terminal device may be preset or configured by a network device.
  • Step 102 The sending device maps the pilot sequence to the pilot region of the delay-Doppler domain, maps the cyclic prefix of the pilot sequence to the guard interval of the delay-Doppler domain, and maps the data signal to the delay -Doppler domain data area to obtain time delay-Doppler domain signals.
  • the pilot sequence is located in all rows of the pilot region of the time delay-Doppler domain, so that the energy of the pilot sequence can be dispersed in the time delay domain of the entire pilot region.
  • the sending device may map the pilot sequence, the cyclic prefix of the pilot sequence, and the data signal into the time delay-Doppler domain as shown in FIG. 3.
  • This embodiment divides the time delay-Doppler domain into It is the data area, the pilot area and the guard interval, so that the data signal is mapped to the data area, the pilot sequence is mapped to the pilot area, and the cyclic prefix of the pilot sequence is mapped to the guard interval.
  • the time delay-Doppler domain shown in FIG. 3 can be a data area, a guard interval, a pilot area, and a data area from top to bottom.
  • the positions of the data area, pilot frequency area, and guard interval in the delay-Doppler domain can be flexibly set.
  • the guard interval can be set between the data area and the pilot area.
  • the delay-Doppler domain may include N*M resource units.
  • One dimension of the delay-Doppler domain represents time delay, and the other dimension represents Doppler.
  • the Le domain may include the data region, the guard interval, and the pilot region.
  • N and M are positive integers, and the transmitter may map different signals to different regions in the delay-Doppler domain.
  • the pilot area includes K*M resource units, and the sending device may map the pilot sequence to K rows of the pilot area.
  • the pilot sequence may include K elements.
  • the sending device maps the pilot sequence, the cyclic prefix of the pilot sequence, and the data signal into the delay-Doppler domain to obtain the delay-Doppler signal.
  • the sending device is a terminal device, and the terminal device can map the pilot sequence, the cyclic prefix of the pilot sequence, and the data signal into the delay-Doppler domain to obtain the delay-Doppler signal.
  • the sending device is a network device, and the network device can map the pilot sequence, the cyclic prefix of the pilot sequence, and the data signal into the delay-Doppler domain to obtain the delay-Doppler domain signal.
  • Step 103 The sending device sends a transmission signal to the receiving device, where the transmission signal is obtained by processing the delay-Doppler domain signal.
  • the receiving device receives the transmission signal sent by the sending device.
  • the sending device may convert the time delay-Doppler domain signal to convert the time delay-Doppler domain signal into a time-frequency domain signal. Then, the time-frequency domain signal is dimensionally transformed to obtain the time domain signal, and the time domain signal is processed by waveform modulation and other processing to obtain the transmission signal, and send the transmission signal to the receiving device.
  • the receiving device receives the transmission signal, and can obtain the time delay-Doppler domain signal according to the transmission signal. For example, the receiving device may perform processing such as waveform demodulation and time delay-Doppler domain conversion on the received transmission signal to obtain the time delay-Doppler domain signal.
  • Step 104 The receiving device performs channel estimation according to the time delay-Doppler domain signal and the pilot sequence.
  • the pilot sequence used by the receiving device for channel estimation is the same as the pilot sequence used by the sending device for signal processing.
  • the pilot sequence can be preset or configured by the network device, which can be based on requirements Make flexible settings.
  • the receiving device may use the delay-Doppler domain signal and the pilot sequence to perform channel estimation, obtain the equivalent channel in the delay-Doppler domain, and equalize the data signal in the data area according to the equivalent channel , Demodulation and other processing to recover the data signal sent by the sending device.
  • the sending device obtains the pilot sequence
  • the sending device maps the pilot sequence to the pilot region of the delay-Doppler domain, and maps the cyclic prefix of the pilot sequence to the guard interval of the delay-Doppler domain
  • the data signal is mapped to the data area of the time-delay Doppler domain to obtain the time-delay-Doppler domain signal, where the pilot sequence is located in all rows of the pilot area, and the transmitting device sends the transmission signal to the receiving device.
  • the signal is obtained by processing the delay-Doppler domain signal, and the receiving device performs channel estimation according to the delay-Doppler domain signal and the pilot sequence, so as to realize the communication between the sending device and the receiving device.
  • the pilot sequence is mapped to all rows in the pilot area of the delay-Doppler domain, so that the energy of the pilot sequence is dispersed in the delay domain of the entire pilot area, which can avoid the delay-Doppler domain signal passing through After the OTFS encoding operation, there is an impact signal with higher energy, which can reduce the peak-to-average ratio in the communication process, reduce signal distortion, and improve communication quality.
  • the pilot area and guard interval included in the time delay-Doppler domain can be set in different ways.
  • the guard interval is the same as the last L row of the pilot area; L is greater than or equal to 1.
  • the pilot area may include k*m resource units, and the guard interval is the same as the last L rows and m columns of the pilot area.
  • k is greater than L and less than N
  • m is less than or equal to M.
  • L may be greater than or equal to the delay-Doppler domain equivalent channel maximum multipath delay.
  • FIG. 5 is a schematic diagram of a delay-Doppler domain according to an embodiment of the application.
  • the delay-Doppler domain includes N*M resource units, and the pilot area It includes k*M resource units, and the guard interval includes L*M resource units.
  • the delay-Doppler domain consists of data area, guard interval, pilot area, and The number of resource units occupied by the data area, guard interval and pilot area is as described above.
  • the transmitting device can map the pilot sequence to the pilot area as shown in FIG. 5, map the cyclic prefix of the pilot sequence to the guard interval as shown in FIG. 5, and map the data signal to the data area as shown in FIG. 5 .
  • FIG. 6 is a schematic diagram of another delay-Doppler domain according to an embodiment of this application.
  • the delay-Doppler domain includes N*M resource units, where the pilot The area includes k*m resource units, the guard interval includes L*m resource units, and m is less than M.
  • the delay-Doppler domain is data area and guard interval from top to bottom. The number of resource units occupied by the pilot area and the data area, the guard interval and the pilot area is as described above. Since m is less than M, the data area surrounds the guard interval and the pilot area.
  • the sending device can map the pilot sequence to the pilot area as shown in FIG. 6, map the cyclic prefix of the pilot sequence to the guard interval as shown in FIG. 6, and map the data signal to the data area as shown in FIG. 6. .
  • the delay-Doppler domain may also include a protection area, the protection area is located between the pilot area and the data area, and the signals mapped by the protection area are all 0, which can also be understood as the protection area.
  • the signal on the resource unit is empty.
  • FIG. 7 is a schematic diagram of another delay-Doppler domain according to an embodiment of the application.
  • the delay-Doppler domain includes N*M resource units, where the pilot The area includes k*M resource units, the guard interval includes L*M resource units, and the protection area includes d*M resource units.
  • the delay-Doppler domain is sequentially from top to bottom.
  • the transmitting device can map the pilot sequence to the pilot area as shown in FIG. 7, map the cyclic prefix of the pilot sequence to the guard interval as shown in FIG.
  • the protection area separates the pilot area and the data area to prevent the pilot sequence in the pilot area from leaking into the data area after passing through the channel, and eliminate the pilot sequence leakage in the data signal Interference.
  • FIG. 8 is a schematic diagram of another delay-Doppler domain according to an embodiment of the application.
  • the delay-Doppler domain includes N*M resource units, among which, the guide The frequency area includes k*m resource units, the guard interval includes L*m resource units, and the protection area includes d*m resource units, and m is less than M.
  • the delay-Doppler domain From top to bottom, it is data area, guard interval, pilot area, protection area and data area.
  • the number of resource units occupied by guard interval, protection area and pilot area is as described above. Since m is less than M, data area It surrounds the guard interval, pilot area, and guard area.
  • the sending device can map the pilot sequence to the pilot area as shown in FIG. 8, map the cyclic prefix of the pilot sequence to the guard interval as shown in FIG. 8, and map the data signal to the data area as shown in FIG. 8. .
  • the protection area separates the pilot area and the data area to prevent the pilot sequence of the pilot area from leaking into the data area after passing through the channel, and eliminate the leakage of the pilot sequence in the data signal Interference.
  • the setting of the pilot sequence in the pilot region may be implemented in different ways.
  • the pilot sequence may be located in the same column or different columns of the pilot region in the delay-Doppler domain.
  • the pilot sequence may include k elements, and resource units carrying the k elements in the pilot region are located in the same column or different columns.
  • the number of rows of the pilot region in any of the time delay-Doppler domains in Figure 5 to Figure 8 above is k, and each grid of the pilot region carries one element, thereby dispersing the energy of the pilot sequence to On the time delay domain of the entire pilot frequency region.
  • FIG. 9 is a schematic diagram of a pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 5.
  • Delay-Doppler domain that is, the delay-Doppler domain includes N*M resource units, where the pilot area includes k*M resource units, and the guard interval includes L*M resource units.
  • the above-mentioned pilot sequence may be mapped to a column of the pilot region, that is, the k elements of the pilot sequence are located in the same column.
  • the column where the pilot sequence shown in FIG. 9 is located is taken as an example. It can be understood that the pilot sequence may also be located in other columns, for example, any one of the first to Mth columns.
  • the cyclic prefix of the pilot sequence is mapped to the guard interval, as shown in Figure 9, the L to kth elements of the pilot sequence are mapped to the guard interval, and the L to kth elements of the pilot sequence in the guard interval
  • the column where the element is located is the same as the column where the pilot sequence of the pilot area is located.
  • FIG. 10 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 5.
  • Delay-Doppler domain that is, the delay-Doppler domain includes N*M resource units, where the pilot area includes k*M resource units, and the guard interval includes L*M resource units.
  • the example is different from the pilot sequence placement method shown in FIG. 9 in that the k elements of the pilot sequence are located in different columns. Take the pattern shown in FIG. 10 as an example for illustration. The first element is located in the pilot area. The first row, first column, and the second element are located in the second row and eighth column of the pilot area. The positions of other elements are shown in Figure 10. They are not explained here, that is, the k elements of the pilot sequence are distributed in In all rows of the pilot area, but in different columns.
  • FIG. 11 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 6
  • the time delay-Doppler domain and the immediate delay-Doppler domain include N*M resource units, where the pilot area includes k*m resource units, the guard interval includes L*m resource units, and m is less than M,
  • the above-mentioned pilot sequence can be mapped to a column of the pilot region, that is, the k elements of the pilot sequence are located in the same column.
  • the column where the pilot sequence shown in FIG. 11 is located is taken as an example. It can be understood that the pilot sequence may also be located in other columns, for example, the (Mm)/2th column to the (M+m)/2th column. Any one of the columns.
  • the cyclic prefix of the pilot sequence is mapped to the guard interval, as shown in Figure 11, the L to kth elements of the pilot sequence are mapped to the guard interval, and the L to kth elements of the pilot sequence in the guard interval
  • the column where the element is located is the same as the column where the pilot sequence of the pilot area is located.
  • FIG. 12 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 6
  • the mapping mode of the pilot sequence in the pilot region and guard interval of the time delay-Doppler domain shown in FIG. 6 is the same as the placement of the pilot sequence shown in FIG. 10, here No longer.
  • FIG. 13 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 7
  • the mapping mode of the pilot sequence in the pilot region and guard interval of the time delay-Doppler domain shown in Fig. 7 is the same as the placement mode of the pilot sequence shown in Fig. 9. Here No longer.
  • FIG. 14 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 7.
  • the mapping method of the pilot sequence in the pilot region and guard interval of the time delay-Doppler domain shown in FIG. 7 is the same as the placement of the pilot sequence shown in FIG. 10, here No longer.
  • FIG. 15 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain of the mapped pilot sequence can be set as shown in FIG. 8.
  • the mapping mode of the pilot sequence in the pilot region and guard interval of the time delay-Doppler domain shown in Figure 8 is the same as the placement of the pilot sequence shown in Figure 9. I won't repeat it here.
  • FIG. 16 is a schematic diagram of another pilot sequence placement method according to an embodiment of the application.
  • the time delay-Doppler domain mapping of the pilot sequence may be as shown in FIG. 8.
  • the mapping mode of the pilot sequence in the pilot region and guard interval of the time delay-Doppler domain shown in Fig. 8 is the same as that of the pilot sequence shown in Fig. 10. Here No longer.
  • the pilot sequence may be located in adjacent or different adjacent n columns of the pilot region, where n is greater than 1.
  • the pilot sequence may include k*n elements, n takes any value from 2 to m, and the resource unit carrying the k*n elements in the pilot region is located adjacent to or out of phase in the pilot region. In adjacent n columns.
  • FIG. 17 is another pilot sequence placement according to an embodiment of this application.
  • a schematic diagram of the method, as shown in Fig. 17, the time delay-Doppler domain of the mapping pilot sequence can be mapped to the time delay-Doppler domain shown in Fig. 5, and the k*M elements of the pilot sequence are distributed in In the entire pilot area, the elements in each column of the k*M elements may be the same, so that the pilot sequence is distributed in the entire pilot area.
  • the cyclic prefix of the pilot sequence is mapped to the guard interval, as shown in FIG. 17, the distribution of the cyclic prefix of the pilot sequence in the guard interval is the same as the distribution of the pilot sequence in the Lth to kth rows of the pilot region.
  • the signal processing method of the embodiment of the application maps the data signal and the pilot sequence to the time delay-Doppler domain, and performs equivalent transformation with the traditional time-frequency domain through precoding (for example, two-dimensional dual Fourier transform) , Forming the above arbitrary waveform (for example, TDMA) for transmission.
  • precoding for example, two-dimensional dual Fourier transform
  • TDMA arbitrary waveform
  • FIG. 18 is a schematic diagram of a signal processing method of a transmitting device according to an embodiment of the application.
  • the OTFS preprocessing module in the modem module of the transmitting device according to an embodiment of the application maps the data signal and the pilot sequence
  • the time delay-Doppler domain is obtained, the time delay-Doppler domain signal is coded by OTFS, the time-frequency domain signal is obtained, and the time-frequency domain signal is dimensionally transformed to obtain
  • the time domain signal is transmitted to the modulation module, and the modulation module performs waveform modulation to generate a baseband waveform. After the baseband waveform passes through the power amplifier, it is sent out through the antenna port to realize the transmission of the transmission signal.
  • FIG. 19 is a schematic diagram of a signal processing method of a receiving device according to an embodiment of the application.
  • the receiving device of an embodiment of the application receives a transmission signal through an antenna port, and the demodulation module demodulates the transmission signal.
  • the latter received symbols are passed to the OTFS processing module of the receiving device, and the OTFS performs dimensional transformation on the consecutive M received symbols to generate a two-dimensional equivalent signal with a size of N*M (also referred to as a time-frequency domain signal).
  • N*M also referred to as a time-frequency domain signal
  • OTFS decoding is performed on the time-frequency domain signal, and the decoding and the encoding of the transmitting device are an inverse transformation.
  • a time delay-Doppler domain signal For example, multiplying the conjugate matrix of an orthogonal basis matrix U1 to the left and multiplying the conjugate matrix of the orthogonal basis matrix U2 to the right to obtain a time delay-Doppler domain signal, which is a two-dimensional signal A signal of size N*M.
  • Channel estimation is performed on the equivalent channel in the delay-Doppler domain according to the placement mode of the pilot sequence and the pilot sequence agreed by the sending device and the receiving device.
  • the channel estimation result is used to equalize and demodulate the data signal in the time delay-Doppler domain to restore the data signal of the sending device.
  • the transmitting device selects a pilot sequence of length k, the pilot sequence itself has good autocorrelation properties, and one of the properties is that the pilot sequence is cyclically shifted with different lengths
  • the inner product is 0.
  • the ZC sequence used by the LTE pilot sequence or any column vector of a unitary matrix of k*k dimensions, etc.
  • a can be any value of 1:M. That is, 1 element is placed in each row, and k elements are placed in the pilot area. The energy of the pilot sequence is evenly distributed among the elements. Place the K-L+1:Kth row and ath column of the pilot sequence to the K'-L+1:K'th row and ath column of the guard interval. a can be any value of 1:M. K'is the total number of rows in the guard interval. L needs to meet the maximum multipath delay of the equivalent channel in the Doppler domain with a delay greater than or equal to.
  • the placement of the mapped pilot sequence can be as shown in FIG. 9.
  • the X:Yth row involved in this application specifically refers to the beginning of the Xth row and the end of the Yth row.
  • the pilot sequence is mapped to the 1:k row of the pilot area.
  • the column a specifically refers to mapping the pilot sequence to the 1st row to the kth row of the ath column of the pilot region.
  • the transmitting device After the mapping is completed, the transmitting device performs OTFS encoding on the time delay-Doppler domain signal.
  • a commonly used OTFS encoding representation is U1DU2 to obtain the equivalent signal in the time-frequency domain.
  • D is the time delay-Doppler domain signal.
  • the dimension of the signal is a matrix of N*M
  • U1 is an orthogonal basis matrix with a dimension of N ⁇ N
  • U2 is an orthogonal basis matrix with a dimension of M ⁇ M.
  • Orthogonal basis matrices can be selected arbitrarily, one of the most common orthogonal basis matrices is DFT/IDFT matrix.
  • the effect achieved by the OTFS encoding is to make the OTFS time delay-Doppler domain signal mapped to the time-frequency domain.
  • the transmitting device selects the OTFS-encoded signal for further time-domain signal generation according to the waveform of the transmitting device, and performs processing such as waveform modulation, and transmits the transmission signal through the antenna port. For example, dimensional transformation is performed on the OTFS encoded signal. Specifically, after the OTFS encoding is completed, a two-dimensional time-frequency domain signal with a dimension of N*M will be obtained. The N*M time-frequency domain signal will be The frequency domain signals of each unit time are arranged in sequence to generate the time domain signal before waveform modulation.
  • the modulation module performs waveform modulation to generate a baseband waveform. After the baseband waveform passes through the power amplifier, it is sent out through the antenna port, that is, the transmission of the transmission signal is realized.
  • the receiving device receives the transmission signal and performs processing methods such as demodulation, dimensional transformation, and OTFS decoding on the transmission signal as shown in Figure 19 to obtain a delay-Doppler domain signal based on the pilot frequency agreed upon by the sending device and the receiving device Sequence placement mode and pilot sequence.
  • the pilot sequence in this embodiment has autocorrelation properties (that is, the inner product of the cyclic shift is 0), and the receiving device can multiply the pilot cyclic shift in the time delay-Doppler domain signal.
  • the conjugate transposed matrix of the matrix to obtain the channel estimation result in column a, and use the channel estimation result in column a to equalize and demodulate the data signal in the delay-Doppler domain to restore the data signal of the sending device .
  • the pilot region in the delay-Doppler domain can be equivalent to the pilot sequence and the pilot region in the pilot region.
  • the cyclic convolution of the two-dimensional channel impulse response in the time delay-Doppler domain Take the time delay-Doppler domain 1: K row, the ath column as an example, the mathematical expression is as follows:
  • Is the received vector of the a-th column that is, the a-th column of the aforementioned time delay-Doppler domain signal
  • Is the a-th column in the two-dimensional channel matrix Is the pilot matrix.
  • the receiving vector in the a-th column is only related to the a-th column in the two-dimensional channel matrix. This is because the pilot sequence is only placed in one column.
  • the column vector of each column of the pilot matrix is a cyclic shift in which the column vector of the previous column moves one bit downward. This is due to the effect of placing the cyclic prefix (CP) of the pilot sequence in the guard interval.
  • CP cyclic prefix
  • the received signal can be multiplied by the conjugate transpose matrix of the pilot cyclic shift matrix to the left to obtain the channel estimation of column a, the specific calculation process As follows:
  • mode two this embodiment is different from the above mode one in that the selected pilot sequence is different.
  • the pilot sequence in this embodiment is another sequence that does not have autocorrelation characteristics, for example, the pilot sequence For other pilot sequences with better peak-to-average ratio suppression performance, such as pi/2-BPSK sequence, pi/4-QPSK sequence, etc.
  • the sending device of this embodiment adopts the same delay-Doppler domain mapping processing method as the first method to obtain the delay-Doppler domain signal, and the pilot sequence of the delay-Doppler domain signal can be placed as follows Shown in Figure 9.
  • the sending device of this embodiment can use the same OTFS coding, dimension transformation, waveform modulation and other processing as the above-mentioned method 1, and then send the transmission signal through the antenna port.
  • the receiving device receives the transmission signal and performs processing methods such as demodulation, dimensional transformation, and OTFS decoding on the transmission signal as shown in Figure 19 to obtain a delay-Doppler domain signal based on the pilot frequency agreed upon by the sending device and the receiving device Sequence placement mode and pilot sequence.
  • the pilot sequence of this embodiment does not need to have good autocorrelation properties by itself, and can also obtain channel estimation. It is only necessary that the DFT transform of the pilot sequence does not have a 0 value.
  • the receiving device can obtain the channel estimation result of column a through the following formula (3), and use the channel estimation result of column a to equalize and demodulate the data signal in the delay-Doppler domain, and restore the data signal of the sending device .
  • DFT is performed for the converted Y a
  • Y a is a column vector of the received (i.e., the above-described delay - Doppler domain of a column signal)
  • P a DFT is performed for the conversion, the pilot matrix P a.
  • the pilot region in the time delay-Doppler domain can be equivalent to the pilot sequence and time of the pilot region.
  • Cyclic convolution of the two-dimensional channel impulse response in the extended-Doppler domain Take the time delay-Doppler domain 1: K row, the ath column as an example, the mathematical expression is as follows:
  • the above matrix calculates the least squares estimation of the channel vector, and the DFT estimation of the channel can be obtained:
  • this processing method does not require the pilot sequence itself to have good autocorrelation properties to obtain channel estimation. It is only necessary that the DFT transform of the pilot sequence does not have a 0 value.
  • mode three is different from the above mode two in that the pilot sequence is placed in a different manner.
  • the transmitting device of this embodiment maps the data signal and the pilot sequence to the delay-Doppler domain.
  • the pilot sequence of the time delay-Doppler domain signal can be placed as shown in FIG. 17, that is, in this embodiment, the user-specific pilot sequence is used to occupy all the pilot regions. .
  • the sending device of this embodiment can use the same OTFS coding, dimension transformation, waveform modulation and other processing as the above-mentioned method 1, and then send the transmission signal through the antenna port.
  • the receiving device receives the transmission signal and performs processing methods such as demodulation, dimensional transformation, and OTFS decoding on the transmission signal as shown in Figure 19 to obtain a delay-Doppler domain signal based on the pilot frequency agreed upon by the sending device and the receiving device Sequence placement method and pilot sequence, the receiving device can multiply a matrix by the two ends of the following equation (7) The inverse of can be obtained Each element in. Last right Do IDFT transform, h a may be obtained for the estimate, i.e., a first column to obtain the channel estimation result by the first column of a channel estimation result of the delay - the data signals Doppler domain equalization, demodulation, resume sending The data signal of the device.
  • the pilot region in the time delay-Doppler domain can be equivalent to the pilot sequence and time of the pilot region. Cyclic convolution of the two-dimensional channel impulse response in the extended-Doppler domain. As shown in Figure 17, the pilot sequence of the pilot area is located in any row or column of the pilot area, and the pilot matrix is expressed in the form of a column vector:
  • Each element can be zero or non-zero. Similar to the processing method of the receiving device in the second mode, taking the 1:K row and the ath column of the delay-Doppler domain as an example, the mathematical expression is as follows:
  • the above-mentioned signal processing method in the embodiment of the present application may be applicable to high-speed mobile communication scenarios. For example: a communication scene on a highway with a speed of 120km/h, a communication scene on a high-speed rail with a speed of 500km/h, etc.
  • the above-mentioned signal processing method in the embodiment of the present application can move the digital signal processing to the time delay-Doppler domain.
  • the time delay-Doppler domain and the time-frequency domain construct a bridge through a two-dimensional orthogonal transformation. Therefore, the time delay-Doppler domain is a two-dimensional orthogonal mapping of the time-frequency domain. Through two-dimensional orthogonal mapping, the time-frequency domain changing channel is energy-averaged in the time-delay-Doppler domain.
  • the equivalent channel in the delay-Doppler domain has the following three characteristics compared with the channel in the time-frequency domain: Stability: the channel experienced by each signal in the delay-Doppler domain is almost completely Same; time delay-Doppler information discernibility: that is, in the time delay-Doppler domain, the channel shows a two-dimensional expansion. In the time delay domain, you can see the channel's multipath information. In the Le domain, you can see the Doppler spread of the channel; Orthogonality: Delay-Doppler channels are orthogonal, that is, the information of each path of the channel is not related to the information of other paths.
  • Doppler expansion Due to the distinguishability of Doppler expansion (traditional transmission methods can only show distinguishable multipath information), in high-speed moving scenes, the distinguishable Doppler expansion can be eliminated or reduced as much as possible through equalization methods. Inter-signal interference is suppressed, thereby improving system performance.
  • One or more of the pilot area, the placement mode of the pilot sequence, the pilot sequence, or the protection area involved in the signal processing method of the embodiment of the present application may be preset, which does not require additional signaling, and It may be agreed by the sending device and the receiving device through signaling. This application uses the following embodiments to explain the implementation of the sending device and the receiving device through the signaling agreement.
  • FIG. 20 is a flowchart of another signal processing method according to an embodiment of the application.
  • This embodiment is for uplink transmission, that is, the sending device is a terminal device and the receiving device is a network device.
  • the method of this embodiment can include:
  • Step 201 The network device sends at least one of the first indication information, the second indication information, the third indication information, or the fourth indication information to the terminal device.
  • the terminal device receives at least one of the first instruction information, the second instruction information, the third instruction information, or the fourth instruction information sent by the network device.
  • the first indication information is used to indicate the position of the pilot region in the time delay-Doppler domain.
  • the first indication information may indicate any of the delay-Doppler domains shown in Figs. 5-8.
  • the first indication information may include the number of grids occupied by the pilot area in the delay domain, the starting position in the delay domain, the number of grids occupied in the Doppler domain, and the number of grids in the Doppler domain. The starting position of the Puller field.
  • the second indication information is used to indicate the location of the resource unit carrying the pilot sequence.
  • the second indication information may indicate the pilot sequence setting manner as shown in FIG. 9.
  • the second indication information may include a column index, which is used to indicate which column the terminal device places the pilot sequence on, for example, the a-th column.
  • the second indication information may include an initial pattern value, and the initial pattern value is used to instruct the terminal device to determine the starting position of the pilot sequence pattern according to the initial pattern value.
  • the patterns of the pilot sequence will be orthogonal.
  • the second indication information may indicate the pilot sequence setting mode as shown in FIG. 10, which is presented in the pattern shown in FIG. 10, and the initial pattern value 1 may indicate the pilot sequence pattern as shown in FIG.
  • the initial pattern value of 2 may indicate that the pattern of the pilot sequence shown in FIG. 10 is cyclically shifted to the right by one grid.
  • the third indication information is used to indicate the pilot sequence.
  • the third indication information may indicate a pilot sequence orthogonal to other terminal devices.
  • the third indication information may include an initial value, and the initial value is used to instruct the terminal device to generate a pilot sequence orthogonal to other terminal devices according to the initial value.
  • the fourth indication information is used to indicate the position of the protection area in the delay-Doppler domain.
  • the position of the protected area may be preset or indicated by signaling.
  • the network device may send the fourth indication information to the terminal device.
  • the network device may send at least one of the first indication information, the second indication information, the third indication information, or the fourth indication information to the terminal device through at least one of the following signaling;
  • the signaling may include downlink control information (Downlink Control Information, DCI), radio resource control (Radio Resource Control, RRC), or media access control (Media Access Control, MAC) control element (CE).
  • Step 202 The terminal device maps the pilot sequence to the pilot region of the delay-Doppler domain according to at least one of the first indication information, the second indication information, the third indication information, or the fourth indication information. , Map the cyclic prefix of the pilot sequence to the guard interval of the delay-Doppler domain, map the data signal to the data area of the delay-Doppler domain, and obtain the delay-Doppler domain signal.
  • the position of the pilot area in the delay-Doppler domain, the position of the pilot sequence in the pilot area, the position of the pilot sequence, the guard interval, and the area size can be preset, or can be indicated by the above step 201 Information instructions.
  • the terminal device maps the pilot sequence, the cyclic prefix of the pilot sequence, and the data signal to the corresponding time delay-Doppler domain through step 202 to obtain the time delay-Doppler domain signal.
  • Step 203 The terminal device processes the time delay-Doppler domain signal to obtain a transmission signal.
  • the terminal device can convert the time delay-Doppler domain signal, convert the time delay-Doppler domain signal into a time-frequency domain signal, and then compare the time-frequency domain signal. Transform the dimensionality of the signal in the domain to obtain the time domain signal, and perform processing such as waveform modulation on the time domain signal to obtain the transmission signal,
  • Step 204 The terminal device sends a transmission signal to the network device.
  • the network device receives the transmission signal sent by the terminal device.
  • Step 205 The network equipment processes the transmission signal, obtains the time delay-Doppler domain signal, performs channel estimation according to the time delay-Doppler domain signal and the pilot sequence, and obtains the equivalent channel of the time delay-Doppler domain .
  • Step 206 The network device performs equalization processing on the data signal in the data area according to the equivalent channel.
  • the network device performs processing such as equalization and demodulation on the data signal in the data area according to the equivalent channel to recover the data signal sent by the sending device.
  • the network device sends at least one of the first instruction information, the second instruction information, the third instruction information, or the fourth instruction information to the terminal device, and the terminal device sends the pilot sequence to the terminal device according to the at least one instruction information.
  • Map to the pilot area of the delay-Doppler domain map the cyclic prefix of the pilot sequence to the guard interval of the delay-Doppler domain, and map the data signal to the data area of the delay-Doppler domain
  • the terminal device processes the delay-Doppler domain signal to obtain the transmission signal
  • the terminal device sends the transmission signal to the network device
  • the network device processes the transmission signal to obtain the delay-multiple For Pule domain signals
  • channel estimation is performed based on the delay-Doppler domain signal and pilot sequence to obtain the equivalent channel of the delay-Doppler domain.
  • the network equipment equalizes the data signal in the data area according to the equivalent channel , To recover the data signal of the network device, so as to realize the communication between the sending device and the receiving device.
  • the sending device maps the pilot sequence to all rows in the pilot region of the delay-Doppler domain, so that the energy of the pilot sequence Dispersed in the time delay domain of the entire pilot area, it can avoid the impact signal with higher energy after the delay-Doppler domain signal undergoes the OTFS coding operation, which can reduce the peak-to-average ratio in the communication process and reduce signal distortion. Improve communication quality.
  • the network device can flexibly and dynamically indicate to the terminal device the position of the pilot area in the delay-Doppler domain, the position of the resource unit carrying the pilot sequence, the pilot sequence, and the protection area in the delay-Doppler domain. One or more of the positions in.
  • the sending device is a network device
  • the receiving device is a terminal device. Similar to the uplink transmission in the embodiment described in FIG. 20, the network device can send the first indication information, the second indication information, the third indication information, Or any one or more of the fourth indication information to agree with the terminal equipment that the position of the pilot area in the delay-Doppler domain, the position of the resource unit carrying the pilot sequence, the pilot sequence, and the protection area One or more of the positions in the time delay-Doppler domain.
  • the embodiments of the present application describe in detail the schematic structure of the wireless communication device.
  • FIG. 21 shows a schematic block diagram of a wireless communication device 2100 according to an embodiment of the present application.
  • the apparatus 2100 in the embodiment of the present application may be the sending device in the foregoing method embodiment, or may be one or more chips in the sending device.
  • the apparatus 2100 may be used to perform part or all of the functions of the sending device in the foregoing method embodiment.
  • the device 2100 may include a first transceiver module 2110 and a second processing module 2120.
  • the device 2100 may further include a first storage module 2130.
  • the first transceiver module 2110 can be used to perform the acquisition of the pilot sequence in step S101 in the foregoing method embodiment, send the transmission signal in step 103, or be used to receive the first instruction from the network device in step S201 Information, at least one of the second instruction information, the third instruction information, or the fourth instruction information, the transmission signal in step 204 is sent.
  • the first processing module 2120 may be used to perform step S102 in the foregoing method embodiment, or used to perform step S202 and step 203.
  • the device 2100 may also be configured as a general processing system, such as a chip
  • the first processing module 2120 may include: one or more processors that provide processing functions; the first transceiver module 2110 may be, for example, an input /Output interface, pin or circuit, etc.
  • the input/output interface can be used for the information interaction between this chip system and the outside world. For example, this input/output interface can output the transmission signal of the sending device to other modules outside the chip for processing .
  • the processing module can execute the computer-executable instructions stored in the storage module to implement the function of the sending device in the foregoing method embodiment.
  • the first storage module 2130 optionally included in the apparatus 2100 may be a storage unit in a chip, such as a register, a cache, etc., and the first storage module 2130 may also be a chip located in the sending device.
  • External storage units such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • FIG. 22 shows a schematic block diagram of another wireless communication device 2200 according to an embodiment of the present application.
  • the apparatus 2200 in the embodiment of the present application may be the sending device in the foregoing method embodiment, and the apparatus 2200 may be used to perform part or all of the functions of the sending device in the foregoing method embodiment.
  • the device 2200 may include a processor 2210, a baseband circuit 2230, a radio frequency circuit 2240, and an antenna 2250.
  • the device 2200 may further include a memory 2220.
  • the various components of the device 2200 are coupled together via a bus 2260.
  • the bus system 2260 also includes a power bus, a control bus, and a status signal bus. However, for clear description, various buses are marked as the bus system 2260 in the figure.
  • the processor 2210 may be used to control the sending device, to execute the processing performed by the sending device in the foregoing embodiment, and to execute the processing procedure related to the sending device in the foregoing method embodiment and/or be used in the technology described in this application. In other processes, you can also run the operating system, manage the bus, and can execute programs or instructions stored in the memory.
  • the baseband circuit 2230, the radio frequency circuit 2240, and the antenna 2250 can be used to support the sending and receiving of information between the sending device and the receiving device involved in the foregoing embodiments, so as to support wireless communication between the sending device and the receiving device.
  • the first indication information sent from the receiving device in the uplink transmission is received via the antenna 2250, filtered, amplified, down-converted, and digitized by the radio frequency circuit 2240, and then decoded by the baseband circuit 2230, and de-encapsulated according to the protocol.
  • the processor 2210 After baseband processing such as data, the processor 2210 performs processing to restore the signaling information sent by the receiving device in the uplink transmission; in another example, the transmission signal of the sending device can be processed by the processor 2210, and the baseband circuit 2230 performs the processing Baseband processing such as protocol encapsulation and encoding is further processed by the radio frequency circuit 2240 such as analog conversion, filtering, amplification, and up-conversion, and then transmitted via the antenna 2250.
  • the radio frequency circuit 2240 such as analog conversion, filtering, amplification, and up-conversion
  • the memory 2220 may be used to store program codes and data of the sending device, and the memory 2220 may be the first storage module 2130 in FIG. 21. It is understandable that the baseband circuit 2230, the radio frequency circuit 2240, and the antenna 2250 may also be used to support the transmitting device to communicate with other network entities, for example, to support the transmitting device to communicate with the network element on the core network side.
  • the memory 2220 in FIG. 22 is shown as being separated from the processor 2210. However, those skilled in the art can easily understand that the memory 2220 or any part thereof may be located outside the wireless communication device 2200.
  • the memory 2220 may include a transmission line and/or a computer product separated from the wireless node, and these media can be accessed by the processor 2210 through the bus interface 2260.
  • the memory 2220 or any part thereof may be integrated into the processor 2210, for example, may be a cache and/or a general register.
  • FIG. 22 only shows a simplified design of the sending device.
  • the sending device may include any number of transmitters, receivers, processors, memories, etc., and all sending devices that can implement the application are within the protection scope of the application.
  • the wireless communication device can also be implemented using one or more field-programmable gate arrays (FPGA), programmable logic devices (PLD), Controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
  • FPGA field-programmable gate arrays
  • PLD programmable logic devices
  • Controllers state machines
  • gate logic discrete hardware components
  • any other suitable circuits any combination of circuits capable of performing the various functions described throughout this application.
  • an embodiment of the present application further provides a computer storage medium, which can store a program instruction for indicating any of the above methods, so that the processor executes the program instruction to implement the above method embodiment It involves the methods and functions of the sending device.
  • FIG. 23 shows a schematic block diagram of a wireless communication device 2300 according to an embodiment of the present application.
  • the apparatus 2300 in this embodiment of the application may be the receiving device in the foregoing method embodiment, or may be one or more chips in the receiving device.
  • the apparatus 2300 may be used to perform part or all of the functions of the receiving device in the foregoing method embodiment.
  • the device 2300 may include a second processing module 2310 and a second transceiver module 2320.
  • the device 2300 may further include a second storage module 2330.
  • the second transceiver module 2320 may be used to receive the transmission signal of step S103 in the foregoing method embodiment, or used to receive the transmission signal from the sending device in step S204, or used to send the first instruction information of step S201 , At least one of the second indication information, the third indication information, or the fourth indication information;
  • the second processing module 2310 may be used to perform step S104 in the foregoing method embodiment, or used to perform step S205 and step 206;
  • the device 2300 may also be configured as a general-purpose processing system, such as a general-purpose chip.
  • the second processing module 2310 may include: one or more processors that provide processing functions; the second transceiver module may be an input/ Output interface, pin or circuit, etc.
  • the input/output interface can be used for information interaction between the chip system and the outside world. For example, the input/output interface can output the first indication information to other modules outside the chip for processing.
  • the one or more processors can execute computer-executable instructions stored in the storage module to implement the functions of the receiving device in the foregoing method embodiments.
  • the optional second storage module 2330 included in the apparatus 2300 may be a storage unit in the chip, such as a register, a cache, etc., and the storage module 2330 may also be an external storage module in the receiving device.
  • Storage unit such as read-only memory (ROM for short) or other types of static storage devices that can store static information and instructions, random access memory (RAM for short), etc.
  • FIG. 24 shows a schematic block diagram of another wireless communication device 2400 according to an embodiment of the present application.
  • the apparatus 2400 in the embodiment of the present application may be the receiving device in the foregoing method embodiment, and the apparatus 2400 may be used to perform part or all of the functions of the receiving device in the foregoing method embodiment.
  • the device 2400 may include a processor 2410, a baseband circuit 2430, a radio frequency circuit 2440, and an antenna 2450.
  • the device 2400 may further include a memory 2420.
  • the various components of the device 2400 are coupled together via a bus 2460.
  • the bus system 2460 also includes a power bus, a control bus, and a status signal bus. However, for clear description, various buses are marked as the bus system 2460 in the figure.
  • the processor 2410 may be used to control the receiving device, to perform the processing performed by the receiving device in the above-mentioned embodiment, and to perform the processing procedure related to the receiving device in the above-mentioned method embodiment and/or used in the technology described in this application. In other processes, you can also run the operating system, manage the bus, and can execute programs or instructions stored in the memory.
  • the baseband circuit 2430, the radio frequency circuit 2440, and the antenna 2450 may be used to support the sending and receiving of information between the receiving device and the sending device involved in the foregoing embodiment, so as to support wireless communication between the receiving device and the sending device.
  • the transmission signal sent by the sending device for uplink transmission is received by the antenna 2450, filtered, amplified, down-converted, and digitized by the radio frequency circuit, and then decoded by the baseband circuit, and after the baseband processing such as unpacking the data according to the protocol ,
  • the processor 2410 performs processing to restore the service data sent by the sending device; in another example, the first indication information of the receiving device for uplink transmission can be processed by the processor 2410, and encapsulated according to the protocol via the baseband circuit 2430, and encoded
  • the radio frequency circuit 2440 performs analog conversion, filtering, amplification, and up-conversion, and then transmits it through the antenna 2450.
  • the memory 2420 can be used to store the program code and data of the receiving device.
  • the memory 2420 can be shown in Figure 23.
  • the storage module 2330 It can be understood that the baseband circuit 2430, the radio frequency circuit 2440, and the antenna 2450 can also be used to support the receiving device to communicate with other network entities, for example, to support the receiving device to communicate with the core network device.
  • FIG. 24 only shows a simplified design of the receiving device.
  • the receiving device may include any number of transmitters, receivers, processors, memories, etc., and all receiving devices that can implement the application are within the protection scope of the application.
  • the wireless communication device can also be implemented using one or more field-programmable gate arrays (FPGA), programmable logic devices (PLD), Controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
  • FPGA field-programmable gate arrays
  • PLD programmable logic devices
  • Controllers state machines
  • gate logic discrete hardware components
  • any other suitable circuits any combination of circuits capable of performing the various functions described throughout this application.
  • an embodiment of the present application also provides a computer storage medium, which can store program instructions for indicating any of the above methods, so that the processor executes the program instructions to implement the above method embodiments.
  • the method and function of the receiving device are involved.
  • the processors involved in the foregoing device 2200 and device 2400 may be general-purpose processors, such as general-purpose central processing units (CPU), network processors (Network Processor, NP), microprocessors, etc., or may be application-specific integrated circuits ( application-specific integrated circBIt, ASIC for short), or one or more integrated circuits used to control the execution of the program of this application. It may also be a digital signal processor (Digital Signal Processor, DSP for short), a Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, or discrete hardware components.
  • DSP Digital Signal Processor
  • FPGA Field-Programmable Gate Array
  • the controller/processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the processor usually executes logic and arithmetic operations based on program instructions stored in the memory.
  • the memory involved in the foregoing device 2200 and device 2400 may also store an operating system and other application programs.
  • the program may include program code, and the program code includes computer operation instructions.
  • the foregoing memory may be a read-only memory (read-only memory, ROM for short), other types of static storage devices that can store static information and instructions, random access memory (RAM for short), and storage Other types of dynamic storage devices for information and instructions, disk storage, etc.
  • the memory can be a combination of the storage types described above.
  • the foregoing computer-readable storage medium/memory may be in the processor, or external to the processor, or distributed on multiple entities including the processor or processing circuit.
  • the foregoing computer-readable storage medium/memory may be embodied in a computer program product.
  • the computer program product may include a computer-readable medium in packaging materials.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk).

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请实施例提供一种信号处理方法及装置。本申请的信号处理方法，包括：发送设备获取导频序列；发送设备将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延-多普勒域的数据区域，获取时延-多普勒域信号，其中，所述导频序列位于所述导频区域的所有行；发送设备向接收设备发送传输信号，传输信号为对时延-多普勒域信号进行处理得到的。本申请实施例可以降低通信过程中的峰均值比，减小信号失真，提升通信质量。

Description

信号处理方法及装置
本申请要求于2019年5月27日提交中国专利局、申请号为201910446399.9、申请名称为“信号处理方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术，尤其涉及一种信号处理方法及装置。
背景技术
正交时频空间(Orthogonal Time Frequency&Space，OTFS)技术是一种新的二维调制技术，其最主要的技术特征在于将信号(例如：星座符号)放置在新创立的时延-多普勒域上，并通过二维对偶傅里叶变换与传统的时域-频域进行等效变换，最终形成常见的码分多址(code division multiple access，CDMA)、时分多址(time division multiple access，TDMA)或者频分多址(frequency division multiple access，FDMA)波形进行传输。OTFS技术由于其新扩展的多普勒域而特别适用于高速移动的场景。例如：车速120km/h的高速公路场景，或者车速500km/h的高铁场景等等。
发送设备可以对数据信息和导频信息进行时延-多普勒域信号映射，将数据信息和导频信息映射至时延-多普勒域，再进行OTFS编码操作，将时延-多普勒域的信号映射至时-频域，之后进行维度变化处理、生成基带波形处理流程，最后，将调制好的波形经过功率放大器发送给接收设备。即OTFS技术将数字信号处理搬移到时延-多普勒域上进行。时延-多普勒域是时-频域的一个二维正交映射。通过二维正交映射，时-频域变化的信道在时延-多普勒域进行了能量平均化。因此，时延-多普勒域的等效信道和时-频域的信道相比，具有稳定性、时延-多普勒信息可分辨性以及正交性。
然而，发送设备在对数据信息和导频信息进行时延-多普勒域信号映射、OTFS编码操作获取时域信号后，该时域信号会存在很高的冲击，从而造成过高的峰均值比，引起信号失真。
发明内容
本申请实施例提供一种信号处理方法及装置，以降低通信过程中的峰均值比，减小信号失真，提升通信质量。
第一方面，本申请实施例提供一种信号处理方法，该方法可以包括：发送设备获取导频序列，发送设备将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延-多普勒域的数据区域，获取时延-多普勒域信号，其中，导频序列位于导频区域的所有行，发送设备向接收设备发送传输信号，传输信号为对时延-多普勒域信号进行处理得到的。
本实现方式，发送设备将导频序列映射至时延-多普勒域的导频区域的所有行，使得导频序列的能量分散在整个导频区域的时延域上，可以避免时延-多普勒域信号经过OTFS 编码操作后存在能量较高的冲击信号，可以降低发送设备与接收设备通信过程中的峰均值比，减小信号失真，提升通信质量。
在一种可能的设计中，保护间隔与导频区域的最后L行相同；L大于或者等于1。
可选的，时延-多普勒域包括N*M个资源单元，其中，导频区域可以包括k*m个资源单元，该保护间隔与该导频区域的最后L行m列相同。
在一种可能的设计中，导频序列位于导频区域的相同列或不同列。
可选的，该导频序列可以包括k*n个元素，n取2至m任意一个数值，导频区域中承载该k*n个元素的资源单元位于该导频区域的相邻或不相邻的n列中。
在一种可能的设计中，导频序列位于导频区域的相邻或不相邻的n列中，所述n大于1。
在一种可能的设计中，时延-多普勒域还可以包括保护区域，保护区域位于导频区域与数据区域之间，保护区域映射的信号为0。
本实现方式中，通过保护区域将导频区域和数据区域分隔开，以避免导频区域的导频序列经历信道之后泄露到数据区域中，消除数据信号中导频序列泄露的干扰。
在一种可能的设计中，对于上行传输，该方法还可以包括：发送设备接收如下至少一种信息：第一指示信息，该第一指示信息用于指示导频区域在时延-多普勒域中的位置；第二指示信息，该第二指示信息用于指示承载导频序列的资源单元的位置；第三指示信息，该第三指示信息用于指示导频序列；或者，第四指示信息，该第四指示信息用于指示保护区域在时延-多普勒域中的位置。
本实现方式中，通过上述至少一种指示信息可以灵活动态的指示导频区域在时延-多普勒域中的位置、承载导频序列的资源单元的位置、导频序列、保护区域在时延-多普勒域中的位置中的一项或者多项。
在一种可能的设计中，对于下行传输，该方法还可以包括：发送设备发送如下至少一种信息：第一指示信息，该第一指示信息用于指示导频区域在时延-多普勒域中的位置；第二指示信息，该第二指示信息用于指示承载导频序列的资源单元的位置；第三指示信息，该第三指示信息用于指示该导频序列；或者，第四指示信息，该第四指示信息用于指示保护区域在时延-多普勒域中的位置。
第二方面，本申请实施例提供一种信号处理方法，该方法可以包括：收设备接收发送设备发送的传输信号，该传输信号是由时延-多普勒域信号进行处理得到的，该时延-多普勒域信号包括：映射导频序列的导频区域，映射该导频序列的循环前缀的保护间隔，和映射数据信号的数据区域，该导频序列位于所述导频区域的所有行；接收设备根据时延-多普勒域信号和导频序列进行信道估计。
在一种可能的设计中，保护间隔与导频区域的最后L行相同；L大于或者等于1。
在一种可能的设计中，导频序列位于导频区域的相同列或不同列。
在一种可能的设计中，导频序列位于导频区域的相邻或不相邻的n列中，n大于1。
在一种可能的设计中，时延-多普勒域信号还包括映射信号为0的保护区域，该保护区域位于导频区域与数据区域之间。
在一种可能的设计中，对于上行传输，该方法还可以包括：接收设备发送如下至少一种信息：第一指示信息，该第一指示信息用于指示导频区域在时延-多普勒域中的位置； 第二指示信息，该第二指示信息用于指示承载导频序列的资源单元的位置；第三指示信息，该第三指示信息用于指示导频序列；或者，第四指示信息，该第四指示信息用于指示保护区域在时延-多普勒域中的位置。
在一种可能的设计中，对于下行传输，该方法还可以包括：接收设备接收如下至少一种信息：第一指示信息，该第一指示信息用于指示导频区域在时延-多普勒域中的位置；第二指示信息，该第二指示信息用于指示承载导频序列的资源单元的位置；第三指示信息，该第三指示信息用于指示导频序列；或者，第四指示信息，该第四指示信息用于指示该保护区域在该时延-多普勒域中的位置。
第三方面，本申请实施例提供了一种无线通信装置，该装置可以是发送设备，也可以是发送设备内的芯片。该装置具有实现上述各实施例涉及发送设备的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能的设计中，当该装置为发送设备时，该装置可以包括：处理模块和收发模块，该处理模块例如可以是处理器，该收发模块例如可以是收发器，该收发器可以包括射频电路和基带电路。
可选地，该装置还可以包括存储单元，该存储单元例如可以是存储器。当该装置包括存储单元时，该存储单元用于存储计算机执行指令，该处理模块与该存储单元连接，该处理模块执行该存储单元存储的计算机执行指令，以使该发送设备执行上述涉及发送设备功能的信号处理方法。
在另一种可能的设计中，当该装置为发送设备内的芯片时，该芯片包括：处理模块和收发模块，该处理模块例如可以是处理器，该收发模块例如可以是该芯片上的输入/输出接口、管脚或电路等。可选的，该装置还可以包括存储单元，该处理模块可执行存储单元存储的计算机执行指令，以使该发送设备内的芯片执行上述任一方面涉及发送设备功能的信号处理方法。
可选地，该存储单元为芯片内的存储单元，如寄存器、缓存等，该存储单元还可以是发送设备内的位于芯片外部的存储单元，如只读存储器(read-only memory，简称ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，简称RAM)等。
其中，上述任一处提到的处理器，可以是一个通用中央处理器(Central Processing Unit，简称CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，简称ASIC)，或一个或多个用于控制上述各方面信号处理方法的程序执行的集成电路。
第四方面，本申请提供一种无线通信装置，该装置可以是接收设备，也可以是接收设备内的芯片。该装置具有实现上述各方面涉及接收设备的各实施例的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元。
在一种可能的设计中，当该装置为接收设备时，该装置可以包括：处理模块和收发模块，该处理模块例如可以是处理器，该收发模块例如可以是收发器，所述收发器包括射频电路，可选地，所述装置还包括存储单元，该存储单元例如可以是存储器。当装置包括存储单元时，该存储单元用于存储计算机执行指令，该处理模块与该存储 单元连接，该处理模块执行该存储单元存储的计算机执行指令，以使该装置执行上述任意一方面涉及接收设备功能的信号处理方法。
在另一种可能的设计中，当该装置为接收设备内的芯片时，该芯片包括：处理模块和收发模块，所述处理模块例如可以是处理器，所述收发模块例如可以是该芯片上的输入/输出接口、管脚或电路等。该处理模块可执行存储单元存储的计算机执行指令，以使该接收设备内的芯片执行上述各方面涉及接收设备功能的信号处理方法。可选地，所述存储单元为所述芯片内的存储单元，如寄存器、缓存等，所述存储单元还可以是所述接入点内的位于所述芯片外部的存储单元，如ROM或可存储静态信息和指令的其他类型的静态存储设备，RAM等。
其中，上述任一处提到的处理器，可以是一个CPU，微处理器，ASIC，或一个或多个用于控制上述信号处理方法的程序执行的集成电路。
第五方面，提供了一种计算机存储介质，该计算机存储介质中存储有程序代码，该程序代码用于指示执行上述第一方面至第二方面中的任一方面或其任意可能的实现方式中的方法的指令。
第六方面，提供了一种处理器，用于与存储器耦合，用于执行上述第一方面至第二方面中的任一方面或其任意可能的实现方式中的方法。
第七方面，提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行上述第一方面至第二方面中的任一方面或其任意可能的实现方式中的方法。
第八方面，提供了一种通信系统，该系统包括：上述第三方面任一种可能的实现方式的发送设备和第四方面中任一种可能的实现方式的接收设备。
本申请实施例的信号处理方法及装置，发送设备获取导频序列，发送设备将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延-多普勒域的数据区域，获取时延-多普勒域信号，其中，导频序列位于导频区域的所有行，发送设备向接收设备发送传输信号，该传输信号为对该时延-多普勒域信号进行处理得到的，接收设备根据时延-多普勒域信号和导频序列进行信道估计，从而实现发送设备与接收设备之间的通信，发送设备将导频序列映射至时延-多普勒域的导频区域的所有行，使得导频序列的能量分散在整个导频区域的时延域上，可以避免时延-多普勒域信号经过OTFS编码操作后存在能量较高的冲击信号，可以降低通信过程中的峰均值比，减小信号失真，提升通信质量。
附图说明
图1为本申请实施例的一种应用场景的示意图；
图2为本申请实施例的另一种应用场景的示意图；
图3为本申请实施例的时延-多普勒域与时-频域的映射关系示意图；
图4为本申请实施例的一种信号处理方法的流程图；
图5为本申请实施例的一种时延-多普勒域的示意图；
图6为本申请实施例的另一种时延-多普勒域的示意图；
图7为本申请实施例的另一种时延-多普勒域的示意图；
图8为本申请实施例的另一种时延-多普勒域的示意图；
图9为本申请实施例的一种导频序列放置方式的示意图；
图10为本申请实施例的另一种导频序列放置方式的示意图；
图11为本申请实施例的另一种导频序列放置方式的示意图；
图12为本申请实施例的另一种导频序列放置方式的示意图；
图13为本申请实施例的另一种导频序列放置方式的示意图；
图14为本申请实施例的另一种导频序列放置方式的示意图；
图15为本申请实施例的另一种导频序列放置方式的示意图；
图16为本申请实施例的另一种导频序列放置方式的示意图；
图17为本申请实施例的另一种导频序列放置方式的示意图；
图18为本申请实施例的发送设备的信号处理方法的示意图；
图19为本申请实施例的接收设备的信号处理方法的示意图；
图20为本申请实施例的另一种信号处理方法的流程图；
图21为本申请实施例提供的一种无线通信装置的结构示意图；
图22为本申请实施例提供的另一种无线通信装置的结构示意图；
图23为本申请实施例提供的又一种无线通信装置的结构示意图；
图24为本申请实施例提供的又一种无线通信装置的结构示意图。
具体实施方式
本申请实施例涉及的“第一”、“第二”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本申请所涉及的网络设备指，可以和终端设备进行通信的设备。网络设备可以是接入网设备、中继站或接入点。例如，网络设备可以是全球移动通信系统(Global System for Mobile Communications，GSM)或码分多址(Code Division Multiple Access，CDMA)网络中的基站收发信台(Base Transceiver Station，BTS)，也可以是宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中的基站(NodeB,NB)，还可以是长期演进(Long Term Evolution，LTE)中的演进基站(Evolutional NodeB，eNB或eNodeB)。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。网络设备还可以是5G网络中的网络设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备。网络设备还可以是可穿戴设备或车载设备等。
本申请所涉及的终端设备指，具有通信功能的通信装置。例如，可以是无线通信设备、物联网(Internet of Things，IoT)设备、可穿戴设备或车载设备、移动终端、客户终端设备(Customer Premise Equipment，CPE)等。该移动终端也可以称为用户设备(User Equipment，简称：UE)、接入终端、用户单元、用户站、移动站、移动台、用户终端、终端、无线通信设备、用户代理或用户装置。该移动终端可以是智能手机、蜂窝电话、无绳电话、平板电脑、个人数字处理(Personal Digital Assistant，简称：PDA)设备、具有无线通信功能的IoT设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的PLMN网络中的终端设备等。
示例性的，图1为本申请实施例的一种应用场景的示意图，如图1所示，该应用场景可以包括发送设备和接收设备。其中，该发送设备可以是上述任一形式的终端设备，相应的，该接收设备可以是上述任一形式的网络设备。或者，该发送设备可以是上述任一形式的网络设备，相应的，该接收设备可以是上述任一形式的终端设备。
发送设备通过本申请的信号处理方法向接收设备发送传输信号，该传输信号为对时延-多普勒域信号进行处理得到的，接收设备接收该传输信号，根据时延-多普勒信号和导频序列进行信道估计，从而实现发送设备与接收设备之间的通信，发送设备将导频序列映射至时延-多普勒域的导频区域的所有行，使得导频序列的能量分散在整个导频区域的时延域上，可以避免时延-多普勒域信号经过OTFS编码操作后存在能量较高的冲击信号，可以降低通信过程中的峰均值比，减小信号失真，提升通信质量。其具体解释说明可以参见下述实施例的解释说明。
示例性的，图2为本申请实施例的另一种应用场景的示意图，如图2所示，该应用场景以一个基站(base station，BS)和三个UE为例进行举例说明，其中，三个UE分别为UE0、UE1和UE2，例如，UE0可以使用LTE系统中上行传输使用的DFT-S-OFDM波形的调制方式，与BS进行通信，UE0可以作为发送设备，BS可以作为接收设备。UE1可以使用LTE系统中下行传输所使用的OFDM波形的调制方式，与BS进行通信，该UE1可以作为接收设备，该BS可以作为发送设备。UE2可以使用CDMA波形的调制方式，与BS进行通信。
示例性的，上述应用场景可以是高速通信场景、MTC通信场景、高频大带宽通信场景等。
需要说明的是，上述BS与UE之间的波形仅为一种示例，该波形还可以为任意的其他已知波形，选择不同的波形做不同的调制即可，本申请的发送设备生成的时延-多普勒域信号可以用任意的波形调制。
本申请所涉及的时延-多普勒域指，与时-频域不同的一个二维域，其中，一个维度代表时延域，另一个维度代表多普勒域，作为一种示例，该时延-多普勒域可以用N*M的D矩阵表示。该时延-多普勒域可以由N*M个资源单元构成，一个资源单元占据时延域的一个栅格和多普勒域的一个栅格。时延域的一个栅格为一个时延域的单位τ，τ表征的是时延域信号的间隔，
Figure PCTCN2020088919-appb-000001
单位是秒。N是时延域栅格个数。Δf是频率的子载波间隔。因此，时延域栅格就代表着间隔τ个时间，发送一个信息。其物理含义为在时延-多普勒域所展现出的二维信道的时延域间隔为栅格单位τ个时间发送一个信息。多普勒域的一个栅格为一个多普勒域单位v，v表征的是多普勒域信号的间隔，
Figure PCTCN2020088919-appb-000002
单位是Hz，其表征的是多普勒域信号的间隔。即多普勒栅格就代表着间隔v个频率间隔，发送一个信息。其物理含义为在时延-多普勒域所展现出的二维信道的多普勒域间隔为栅格单位v个频率发送一个信息。
需要说明的是，上述τ r和v r满足如下条件：τ r*v r＝1。时延-多普勒域与时频域具有映射关系，示例性的，图3为本申请实施例的延-多普勒域与时-频域的映射关系示意图，如图3所示，时延域可以映射至频域，多普勒域可以映射至时域，由此可见，本申请实施例的时延-多普勒域信号可以转换为时-频域信号，时-频域信号也可以转换为时延-多普勒域信号。其中，时-频域信号中任意一点(例如，(n，m))信号的物理意义为在第m个单位时间第n个频域上的信号。
还需要说明的是，上述M和N可以取任意数值，示例性，M可以取2的倍数，N可以取14的倍数。
图4为本申请实施例的一种信号处理方法的流程图，如图4所示，本实施例涉及发送设备和接收设备，本实施例的方法可以包括：
步骤101、发送设备获取导频序列。
该导频序列用于接收设备进行信道估计。例如，该导频序列可以包括ZC序列、酉矩阵的任意列向量、pi/2-BPSK序列或pi/4-QPSK序列中任意一项，其也可以是其他序列，此处不一一举例说明。
该导频序列可以是预设的，也可以是由网络设备配置的，其可以根据需求进行灵活设置。例如，对于上行传输，发送设备为终端设备，该终端设备获取的导频序列可以是预设的，也可以是由网络设备配置的。
步骤102、发送设备将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延-多普勒域的数据区域，获取时延-多普勒域信号。
该导频序列位于时延-多普勒域的导频区域的所有行，可以使得导频序列的能量分散在整个导频区域的时延域上。
示例性的，发送设备可以将导频序列、导频序列的循环前缀、数据信号映射至如图3所示的时延-多普勒域中，本实施例将时延-多普勒域划分为数据区域、导频区域和保护间隔，从而将数据信号映射至数据区域，将导频序列映射至导频区域，将导频序列的循环前缀映射至保护间隔。例如，如图3所示的时延-多普勒域从上至下，依次可以为数据区域、保护间隔、导频区域和数据区域。数据区域、导频区域和保护间隔在时延-多普勒域中的位置可以需求进行灵活设置。其中，保护间隔可以设置在数据区域与导频区域之间。
举例而言，该时延-多普勒域可以包括N*M个资源单元，该时延-多普勒域的一个维度代表时延，另一个维度代表多普勒，该时延-多普勒域可以包括该数据区域、该保护间隔和该导频区域，N和M为正整数，发送端可以将不同的信号映射至时延-多普勒域的不同区域。例如，该导频区域包括K*M个资源单元，发送设备可以将该导频序列映射至该导频区域的K行中，举例而言，该导频序列可以包括K个元素，通过本步骤的处理方式，可以实现一个元素位于该导频区域的一行中的一个资源单元，从而使得导频序列位于导频区域的所有行。
发送设备将导频序列、导频序列的循环前缀、数据信号映射至时延-多普勒域中，获取时延-多普勒信号。例如，对于上行传输，该发送设备为终端设备，终端设备可以将导 频序列、导频序列的循环前缀、数据信号映射至时延-多普勒域中，获取时延-多普勒信号。对于下行传输，该发送设备为网络设备，网络设备可以将导频序列、导频序列的循环前缀、数据信号映射至时延-多普勒域中，获取时延-多普勒域信号。
步骤103、发送设备向接收设备发送传输信号，该传输信号为对该时延-多普勒域信号进行处理得到的。
接收设备接收发送设备发送的该传输信号。
举例而言，发送设备在获取该时延-多普勒域信号之后，可以对该时延-多普勒域信号进行转换，将时延-多普勒域信号转换为时-频域信号，再对时-频域信号进行维度变换得到时域信号，对时域信号进行波形调制等处理，得到该传输信号，向接收设备发送该传输信号。接收设备接收该传输信号，可以根据该传输信号可以获取时延-多普勒域信号。例如，接收设备可以对接收到的传输信号进行波形解调、时延-多普勒域转换等处理后，获取时延-多普勒域信号。
步骤104、接收设备根据时延-多普勒域信号和导频序列进行信道估计。
接收设备进行信道估计所使用的导频序列与发送设备进行信号处理过程中所使用的导频序列相同，该导频序列可以是预设的，也可以是由网络设备配置的，其可以根据需求进行灵活设置。
示例性的，接收设备可以利用该时延-多普勒域信号和导频序列进行信道估计，获取时延-多普勒域的等效信道，根据等效信道对数据区域的数据信号进行均衡、解调等处理，恢复出发送设备发送的数据信号。
本实施例，发送设备获取导频序列，发送设备将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延多普勒域的数据区域，获取时延-多普勒域信号，其中，导频序列位于导频区域的所有行，发送设备向接收设备发送传输信号，该传输信号为对该时延-多普勒域信号进行处理得到的，接收设备根据时延-多普勒域信号和导频序列进行信道估计，从而实现发送设备与接收设备之间的通信，发送设备将导频序列映射至时延-多普勒域的导频区域的所有行，使得导频序列的能量分散在整个导频区域的时延域上，可以避免时延-多普勒域信号经过OTFS编码操作后存在能量较高的冲击信号，可以降低通信过程中的峰均值比，减小信号失真，提升通信质量。
上述时延-多普勒域所包括导频区域、保护间隔可以有不同的设置方式，在一些实施例中，保护间隔与导频区域的最后L行相同；L大于或者等于1。
举例而言，该导频区域可以包括k*m个资源单元，该保护间隔与该导频区域的最后L行m列相同。其中，k大于L且小于N，m小于等于M。在一些实施例中，L可以大于或等于时延-多普勒域等效信道的最大多径时延。
示例性的，图5为本申请实施例的一种时延-多普勒域的示意图，如图5所示，时延-多普勒域包括N*M个资源单元，其中，导频区域包括k*M个资源单元，保护间隔包括L*M个资源单元，例如，如图5所示，该时延-多普勒域由上至下依次为数据区域、保护间隔、导频区域和数据区域，保护间隔和导频区域所占资源单元的个数如上所述。发送设备可以将导频序列映射至如图5所示的导频区域，将导频序列的循环前缀映射至如图5所 示的保护间隔，将数据信号映射至如图5所示的数据区域。
示例性的，图6为本申请实施例的另一种时延-多普勒域的示意图，如图6所示，时延-多普勒域包括N*M个资源单元，其中，导频区域包括k*m个资源单元，保护间隔包括L*m个资源单元，m小于M，例如，如图6所示，该时延-多普勒域由上至下依次为数据区域、保护间隔、导频区域和数据区域，保护间隔和导频区域所占资源单元的个数如上所述，由于m小于M，所以数据区域环绕在保护间隔和导频区域的四周。发送设备可以将导频序列映射至如图6所示的导频区域，将导频序列的循环前缀映射至如图6所示的保护间隔，将数据信号映射至如图6所示的数据区域。
在一些实施例中，时延-多普勒域还可以包括保护区域，该保护区域位于导频区域与数据区域之间，该保护区域映射的信号均为0，也可以理解为该保护区域的资源单元上的信号为空。
示例性的，图7为本申请实施例的另一种时延-多普勒域的示意图，如图7所示，时延-多普勒域包括N*M个资源单元，其中，导频区域包括k*M个资源单元，保护间隔包括L*M个资源单元，保护区域包括d*M个资源单元，例如，如图7所示，该时延-多普勒域由上至下依次为数据区域、保护间隔、导频区域、保护区域和数据区域，保护间隔、保护区域和导频区域所占资源单元的个数如上所述。发送设备可以将导频序列映射至如图7所示的导频区域，将导频序列的循环前缀映射至如图7所示的保护间隔，将数据信号映射至如图7所示的数据区域。通过设置如图7所示的保护区域，保护区域将导频区域和数据区域分隔开，以避免导频区域的导频序列经历信道之后泄露到数据区域中，消除数据信号中导频序列泄露的干扰。
示例性的，图8为本申请实施例的另一种时延-多普勒域的示意图，如图8所示，时延-多普勒域包括N*M个资源单元其中，其中，导频区域包括k*m个资源单元，保护间隔包括L*m个资源单元，保护区域包括d*m个资源单元，m小于M，例如，如图8所示，该时延-多普勒域由上至下依次为数据区域、保护间隔、导频区域、保护区域和数据区域，保护间隔、保护区域和导频区域所占资源单元的个数如上所述，由于m小于M，所以数据区域环绕在保护间隔、导频区域和保护区域的四周。发送设备可以将导频序列映射至如图8所示的导频区域，将导频序列的循环前缀映射至如图8所示的保护间隔，将数据信号映射至如图8所示的数据区域。通过设置如图8所示的保护区域，保护区域将导频区域和数据区域分隔开，以避免导频区域的导频序列经历信道之后泄露到数据区域中，消除数据信号中导频序列泄露的干扰。
导频序列在导频区域的设置方式可以有不同的实现方式，在一些实施例中，导频序列可以位于时延-多普勒域的导频区域的相同列或不同列。
举例而言，该导频序列可以包括k个元素，导频区域中承载该k个元素的资源单元位于相同列或不同列。上述图5-图8任一种时延-多普勒域的导频区域的行数为k，则导频区域的每一行的一个栅格承载一个元素，从而将导频序列的能量分散到整个导频区域的时延域上。
示例性的，图9为本申请实施例的一种导频序列放置方式的示意图，如图9所示，映 射导频序列的时延-多普勒域的可以采用如图5所示的时延-多普勒域，即该时延-多普勒域包括N*M个资源单元，其中，导频区域包括k*M个资源单元，保护间隔包括L*M个资源单元，本实施例可以将上述导频序列映射到该导频区域的一列中，即该导频序列的k个元素位于相同列。本实施例以如图9所示的导频序列所在列为例，可以理解的，该导频序列也可以位于其他列，例如，第1列至第M列中任意一列。
将导频序列的循环前缀映射至保护间隔，如图9所示，将导频序列的第L至第k个元素映射至保护间隔中，保护间隔中的导频序列的第L至第k个元素所在列与导频区域的导频序列所在列相同。
示例性的，图10为本申请实施例的另一种导频序列放置方式的示意图，如图10所示，映射导频序列的时延-多普勒域的可以采用如图5所示的时延-多普勒域，即该时延-多普勒域包括N*M个资源单元，其中，导频区域包括k*M个资源单元，保护间隔包括L*M个资源单元，本实施例与图9所示的导频序列放置方式的不同之处在于，导频序列的k个元素位于不同列，以图10所示图案为例进行举例说明，第一个元素位于导频区域的第一行第一列，第二个元素位于导频区域的第二行第八列，其他元素的位置如图10所示，此处不一一说明，即导频序列的k个元素分布于导频区域的所有行中，但是分别位于不同列。
示例性的，图11为本申请实施例的另一种导频序列放置方式的示意图，如图11所示，映射导频序列的时延-多普勒域的可以采用如图6所示的时延-多普勒域，即时延-多普勒域包括N*M个资源单元，其中，导频区域包括k*m个资源单元，保护间隔包括L*m个资源单元，m小于M，本实施例可以将上述导频序列映射到该导频区域的一列中，即该导频序列的k个元素位于相同列。本实施例以如图11所示的导频序列所在列为例，可以理解的，该导频序列也可以位于其他列，例如，第(M-m)/2列至第(M+m)/2列中任意一列。
将导频序列的循环前缀映射至保护间隔，如图11所示，将导频序列的第L至第k个元素映射至保护间隔中，保护间隔中的导频序列的第L至第k个元素所在列与导频区域的导频序列所在列相同。
示例性的，图12为本申请实施例的另一种导频序列放置方式的示意图，如图12所示，映射导频序列的时延-多普勒域的可以采用如图6所示的时延-多普勒域，导频序列在图6所示的时延-多普勒域的导频区域和保护间隔中的映射方式与图10所示导频序列的放置方式相同，此处不再赘述。
示例性的，图13为本申请实施例的另一种导频序列放置方式的示意图，如图13所示，映射导频序列的时延-多普勒域的可以采用如图7所示的时延-多普勒域，导频序列在图7所示的时延-多普勒域的导频区域和保护间隔中的映射方式与图9所示导频序列的放置方式相同，此处不再赘述。
示例性的，图14为本申请实施例的另一种导频序列放置方式的示意图，如图14所示，映射导频序列的时延-多普勒域的可以采用如图7所示的时延-多普勒域，导频序列在图7所示的时延-多普勒域的导频区域和保护间隔中的映射方式与图10所示导频序列的放置方式相同，此处不再赘述。
示例性的，图15为本申请实施例的另一种导频序列放置方式的示意图，如图15所示，设置映射导频序列的时延-多普勒域的可以采用如图8所示的时延-多普勒域，导频序列在 图8所示的时延-多普勒域的导频区域和保护间隔中的映射方式与图9所示导频序列的放置方式相同，此处不再赘述。
示例性的，图16为本申请实施例的另一种导频序列放置方式的示意图，如图16所示，映射导频序列的时延-多普勒域的可以采用如图8所示的时延-多普勒域，导频序列在图8所示的时延-多普勒域的导频区域和保护间隔中的映射方式与图10所示导频序列的放置方式相同，此处不再赘述。
在一些实施例中，导频序列可以位于导频区域的相邻或不同相邻的n列中，n大于1。
举例而言，该导频序列可以包括k*n个元素，n取2至m任意一个数值，导频区域中承载该k*n个元素的资源单元位于该导频区域的相邻或不相邻的n列中。
示例性的，以n＝M，时延-多普勒域采用图5所示的时延-多普勒域为例进行举例说明，图17为本申请实施例的另一种导频序列放置方式的示意图，如图17所示，映射导频序列的时延-多普勒域的可以采用如图5所示的时延-多普勒域，导频序列的k*M个元素分布在整个导频区域中，其中，k*M个元素中每一列元素可以相同，使得导频序列分布在整个导频区域中。
将导频序列的循环前缀映射至保护间隔，如图17所示，保护间隔中的导频序列的循环前缀的分布与导频区域的第L至第k行的导频序列的分布相同。
本申请实施例的信号处理方法将数据信号和导频序列映射至时延-多普勒域，通过预编码(例如，二维对偶傅里叶变换)与传统的时-频域进行等效变换，形成上述任意波形(例如，TDMA)进行传输。下面结合上述实施例的导频序列在时延-多普勒域的放置方式，对本申请实施例的信号处理方法进行解释说明。
图18为本申请实施例的发送设备的信号处理方法的示意图，如图18所示，本申请实施例的发送设备的调制解调模块中的OTFS预处理模块，将数据信号和导频序列映射至时延-多普勒域，获取时延-多普勒域信号，对时延-多普勒域信号进行OTFS编码，获取时-频域信号，对时-频域信号进行维度变换，得到时域信号，将该时域信号传递给调制模块，由调制模块进行波形调制，生成基带波形，该基带波形经过功率放大器后，通过天线端口发送出去，即实现传输信号的发送。
图19为本申请实施例的接收设备的信号处理方法的示意图，如图19所示，本申请实施例的接收设备通过天线端口接收传输信号，由解调模块对传输信号进行解调，解调后的接收符号传递给接收设备的OTFS处理模块，OTFS对连续的M个接收符号进行维度变换，生成大小为N*M的二维等效信号(也可以称之为时-频域信号)。之后，对该时-频域信号进行OTFS解码，进行的解码与发送设备的编码为一个逆变换。例如，左乘一个正交基矩阵U1的共轭矩阵，右乘正交基矩阵U2的共轭矩阵，得到时延-多普勒域信号，该时延-多普勒域信号为二维的大小为N*M的信号。按照发送设备与接收设备约定的导频序列的放置方式和导频序列，对时延-多普勒域的等效信道进行信道估计。利用信道估计结果对对时延-多普勒域上的数据信号进行均衡、解调，恢复发送设备的数据信号。
示例性的，方式一，发送设备选取长度为k的导频序列，该导频序列本身具备良好的 自相关性质，且具备的一个性质为该导频序列进行不同长度的循环移位后的序列内积为0。例如，LTE导频序列使用的ZC序列，或者k*k维度的酉矩阵的任意列向量等。导频序列可以表示为Pilot＝[P 1,a,P 2,a,……,P k,a] T，其中，P 1,a、P 2,a、……、P k,a可以称之为导频序列的各个元素。
将导频序列映射到导频区域的1：k行，第a列。a可以为1:M的任意值。即，每行放置1个元素，导频区域放置k个元素。导频序列的能量被平均地分配在各个元素上。将导频序列的第K-L+1：K行，第a列放置到保护间隔的第K'-L+1:K’行，第a列。a可以为1:M的任意值。K'为保护间隔的总行数。L需满足大于等于时延多普勒域等效信道的最大多径时延。映射后的导频序列的放置方式可以如图9所示。
需要说明的是，本申请所涉及的第X：Y行具体指从第X行开始至第Y行结束，例如，如上所述的将导频序列映射到导频区域的1：k行，第a列，具体指，将导频序列映射到导频区域的第a列的第1行至第k行。
映射完成后，发送设备对时延-多普勒域信号进行OTFS编码，一种常用的OTFS编码表示形式为U1DU2，得到时-频域的等效信号，D为表示时延-多普勒域信号的维度为N*M的矩阵，U1是维度为N×N的正交基矩阵，U2是维度为M×M的正交基矩阵。正交基矩阵可以任意选择，其中一种最常见的正交基矩阵为DFT/IDFT矩阵。OTFS编码所达到的效果为使得OTFS的时延-多普勒域信号被映射到时频域。
发送设备将OTFS编码后的信号根据发送设备波形选择进行进一步的时域信号生成，并进行波形调制等处理，通过天线端口发送传输信号。例如，对OTFS编码后的信号进行维度变换，具体的，OTFS编码完成后，会得到一个二维，维度为N*M的时-频域信号，将该N*M的时-频域信号中每个单位时间的频域信号顺序排列，以生成波形调制前的时域信号。由调制模块进行波形调制，生成基带波形，该基带波形经过功率放大器后，通过天线端口发送出去，即实现传输信号的发送。
接收设备接收该传输信号，对传输信号进行如图19所示的解调、维度变换、OTFS解码等处理方式之后，得到时延-多普勒域信号，基于发送设备与接收设备约定的导频序列放置方式和导频序列，本实施例的导频序列具有自相关性质(即循环移位的内积为0)，接收设备可以在时延-多普勒域信号左乘导频循环移位矩阵的共轭转置矩阵，以得到第a列的信道估计结果，利用第a列的信道估计结果对时延-多普勒域上的数据信号进行均衡、解调，恢复发送设备的数据信号。
对本实施例的信道估计的原理进行说明：采用本实施例的导频序列放置方式后，过信道后，时延-多普勒域的导频区域可以等效为导频区域的导频序列与时延-多普勒域的二维信道冲击响应的循环卷积。以时延-多普勒域的1：K行，第a列为例，数学表达式如下：
Figure PCTCN2020088919-appb-000003
其中，
Figure PCTCN2020088919-appb-000004
为第a列的接收向量(即上述时延-多普勒域信号的第a列)，
Figure PCTCN2020088919-appb-000005
为二维信道矩阵中的第a列，
Figure PCTCN2020088919-appb-000006
为导频矩阵。由此可见，第a列的接收向量只与二维信道矩阵中的第a列有关。这是由于导频序列只放置在其中的一列。导频矩阵的每一列的列向量为前面一列列向量向下移动一位的循环移位。这是由于在保护间隔内放置导频序列的循环前缀(CP)所产生的效果。
基于发送设备与接收设备约定的导频序列放置方式和导频序列，可以在接收信号左乘导频循环移位矩阵的共轭转置矩阵，即可以得到第a列的信道估计，具体计算过程如下式：
Figure PCTCN2020088919-appb-000007
示例性的，方式二，本实施例与上述方式一的不同之处在于，选取的导频序列不同，本实施例的导频序列为不具有自相关特性的其他序列，例如，该导频序列为其他的峰均比抑制性能更好的导频序列，如pi/2-BPSK序列，pi/4-QPSK序列等。
本实施例的发送设备采用与方式一相同的时延-多普勒域映射处理方式，得到时延-多普勒域信号，时延-多普勒域信号的导频序列的放置方式可以如图9所示。
映射完成后，本实施例的发送设备可以采用与上述方式一相同的OTFS编码、维度变换、波形调制等处理，再通过天线端口发送传输信号。
接收设备接收该传输信号，对传输信号进行如图19所示的解调、维度变换、OTFS解码等处理方式之后，得到时延-多普勒域信号，基于发送设备与接收设备约定的导频序列放置方式和导频序列，本实施例的导频序列不需要本身具备良好的自相关性质，也可获得对信道的估计，只需要导频序列的DFT变换没有0值即可。接收设备可以通过下式(3)得到第a列的信道估计结果，利用第a列的信道估计结果对时延-多普勒域上的数据信号进 行均衡、解调，恢复发送设备的数据信号。
Figure PCTCN2020088919-appb-000008
对
Figure PCTCN2020088919-appb-000009
做IDFT变换，可以得到对h a的估计：
Figure PCTCN2020088919-appb-000010
其中，
Figure PCTCN2020088919-appb-000011
为对Y a进行DFT变换，Y a为第a列的接收向量(即上述时延-多普勒域信号的第a列)，
Figure PCTCN2020088919-appb-000012
为对P a进行DFT变换，P a为导频矩阵。
对本实施例的信道估计的原理进行说明：采用本实施例的导频放置方式后，过信道后，时延-多普勒域的导频区域可以等效为导频区域的导频序列与时延-多普勒域二维信道冲击响应的循环卷积。以时延-多普勒域的1：K行，第a列为例，数学表达式如下：
Figure PCTCN2020088919-appb-000013
为描述方便，将该表达式等效为向量形式有：
Figure PCTCN2020088919-appb-000014
其中，
Figure PCTCN2020088919-appb-000015
表示向量的循环卷积。对等式两边做DFT变换，可得：
Figure PCTCN2020088919-appb-000016
以上矩阵对信道向量求最小二乘估计，可以得到对该列信道的DFT后的估计：
Figure PCTCN2020088919-appb-000017
最后，对
Figure PCTCN2020088919-appb-000018
做IDFT变换，可以得到对h a的估计：
Figure PCTCN2020088919-appb-000019
从以上推导过程中可以看出，该处理方法并不需要导频序列本身具备良好的自相关性质也可获得对信道的估计。只需要导频序列的DFT变换没有0值即可。
示例性的，方式三，本实施例与上述方式二的不同之处在于，导频序列的放置方式不同，本实施例的发送设备将数据信号和导频序列映射至时延-多普勒域，获取时延-多普勒域信号，时延-多普勒域信号的导频序列的放置方式可以如图17所示，即本实施例使用用户专用的导频序列占满所有导频区域。
映射完成后，本实施例的发送设备可以采用与上述方式一相同的OTFS编码、维度变换、波形调制等处理，再通过天线端口发送传输信号。
接收设备接收该传输信号，对传输信号进行如图19所示的解调、维度变换、OTFS解码等处理方式之后，得到时延-多普勒域信号，基于发送设备与接收设备约定的导频序 列放置方式和导频序列，接收设备可以通过下式(7)两端左乘一个矩阵
Figure PCTCN2020088919-appb-000020
的逆，即可求得
Figure PCTCN2020088919-appb-000021
中的每个元素。最后对对
Figure PCTCN2020088919-appb-000022
做IDFT变换，可以得到对h a的估计，即得到第a列的信道估计结果，利用第a列的信道估计结果对时延-多普勒域上的数据信号进行均衡、解调，恢复发送设备的数据信号。
对本实施例的信道估计的原理进行说明：采用本实施例的导频放置方式后，过信道后，时延-多普勒域的导频区域可以等效为导频区域的导频序列与时延-多普勒域二维信道冲击响应的循环卷积。如图17所示导频区域的导频序列处于导频区域的任意行任意列，此将导频矩阵以列向量的形式表示：
Figure PCTCN2020088919-appb-000023
每个元素可以为0或者非0。类似于方式二的接收设备处理方法，以时延-多普勒域的1：K行，第a列为例，数学表达式如下：
Figure PCTCN2020088919-appb-000024
对等式做DFT变换，可得：
Figure PCTCN2020088919-appb-000025
以上公式对接收信号向量进行展开，并转换成行接收信号的表示形式，可以得到每行的接收信号值等效表达式为：
Figure PCTCN2020088919-appb-000026
以上公式对于
Figure PCTCN2020088919-appb-000027
中的每个元素有唯一解即等效于导频图案的每一行循环移位矩阵可逆。对以上公式求矩阵
Figure PCTCN2020088919-appb-000028
的逆，即可求得
Figure PCTCN2020088919-appb-000029
中的每个元素。最后对对
Figure PCTCN2020088919-appb-000030
做IDFT变换，可以得到对h a的估计：
Figure PCTCN2020088919-appb-000031
本申请实施例的上述信号处理方法可以适用于高速移动的通信场景。例如：车速120km/h的高速公路上的通信场景，车速500km/h的高铁上的通信场景等等。
本申请实施例的上述信号处理方法可以将数字信号处理搬移到时延-多普勒域上进行。时延-多普勒域与时-频域通过一个二维正交变换构建桥梁，因此，时延-多普勒域是时-频域的一个二维正交映射。通过二维正交映射，时-频域变化的信道在时延-多普勒域进行了能量平均化。因此，时延-多普勒域的等效信道和时-频域的信道相比，展现出以下三个特性：稳定性：即时延-多普勒域上的每个信号经历的信道几乎完全相同；时延-多普勒信息可分辨性：即在时延-多普勒域上，信道体现出二维的扩展，在时延域上，可以看到信道的多径信息，在多普勒域上，可以看到信道的多普勒扩展；正交性：时延-多普勒信道是正交的，即信道每条径的信息与其他径的信息不相关。
由于多普勒扩展的可分辨性(传统的传输方法只能展现出可分辨的多径信息)，因此，在高速移动场景，可分辨的多普勒扩展可以通过均衡方法尽量消除或减小，信号间干扰得到抑制，从而提升系统性能。
本申请实施例的信号处理方法所涉及的导频区域、导频序列的放置方式、导频序列或保护区域中的一项或者多项可以是预设的，其不需要额外的信令，也可以是发送设备和接收设备通过信令约定的，本申请采用如下几个实施例对发送设备和接收设备通过信令约定的实现方式进行解释说明。
图20为本申请实施例的另一种信号处理方法的流程图，本实施例针对上行传输，即发送设备为终端设备，接收设备为网络设备，如图20所示，本实施例的方法可以包括：
步骤201、网络设备向终端设备发送第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一种指示信息。
终端设备接收网络设备发送的第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一种指示信息。
该第一指示信息用于指示导频区域在时延-多普勒域中的位置。例如，该第一指示信息可以指示如图5-图8任一种时延-多普勒域。举例而言，该第一指示信息可以包括导频区域在时延域所占栅格的个数、在时延域的起始位置、在多普勒域所占栅格的个数和在多普勒域的起始位置。
该第二指示信息用于指示承载导频序列的资源单元的位置。例如，该第二指示信息可以指示如图9所示的导频序列设置方式。举例而言，该第二指示信息可以包括列索引，该列索引用于指示该终端设备将导频序列放置在哪一列上，例如，第a列。或者，该第二指示信息可以包括图案初始值，该图案初始值用于指示终端设备根据该图案初始值确定导频序列的图案的起始位置。对于不同的图案初始值，会使得导频序列的图案正交。例如，该第二指示信息可以指示如图10所示的导频序列设置方式，该设置方式以图10所示的图案呈现，图案初始值1可以指示如图10所示的导频序列的图案，图案初始值2可以指示如 图10所示的导频序列的图案整个循环右移一个栅格。
该第三指示信息用于指示导频序列。例如，该第三指示信息可以指示与其他终端设备正交的导频序列。举例而言，该第三指示信息可以包括初始值，该初始值用于指示该终端设备根据该初始值生成与其他终端设备正交的导频序列。
该第四指示信息用于指示保护区域在时延-多普勒域中的位置。例如，时延-多普勒域还包括保护区域时，该保护区域的位置可以是预设的，也可以通过信令指示。例如，网络设备可以向终端设备发送第四指示信息。
需要说明的是，示例性的，网络设备可以通过以下信令的至少一种，向终端设备发送第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一项；该信令可以包括下行控制信息(Downlink Control Information，DCI)、无线资源控制(Radio Resource Control，RRC)或者媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)。
步骤202、终端设备根据该第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一种指示信息，将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延-多普勒域的数据区域，获取时延-多普勒域信号。
导频区域在时延-多普勒域中的位置、导频序列在导频区域的位置、导频序列、保护间隔的位置和区域大小可以是预设的，也可以通过上述步骤201的指示信息指示。终端设备通过步骤202将导频序列、导频序列的循环前缀和数据信号映射至相应的时延-多普勒域，获取时延-多普勒域信号。
步骤203、终端设备对时延-多普勒域信号进行处理，得到传输信号。
终端设备获取该时延-多普勒域信号之后，可以对该时延-多普勒域信号进行转换，将时延-多普勒域信号转换为时-频域信号，再对时-频域信号进行维度变换得到时域信号，对时域信号进行波形调制等处理，得到传输信号，
步骤204、终端设备向网络设备发送传输信号。
网络设备接收终端设备发送的传输信号。
步骤205、网络设备对传输信号进行处理，获取时延-多普勒域信号，根据时延-多普勒域信号和导频序列进行信道估计，获取时延-多普勒域的等效信道。
步骤206、网络设备根据等效信道对数据区域的数据信号进行均衡处理。
例如，网络设备根据等效信道对数据区域的数据信号进行均衡、解调等处理，恢复出发送设备发送的数据信号。
本实施例，网络设备向终端设备发送第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一种指示信息，终端设备根据该至少一种指示信息，将导频序列映射至时延-多普勒域的导频区域，将导频序列的循环前缀映射至时延-多普勒域的保护间隔，将数据信号映射至时延-多普勒域的数据区域，获取时延-多普勒域信号，终端设备对时延-多普勒域信号进行处理，得到传输信号，终端设备向网络设备发送传输信号，网络设备对传输信号进行处理，获取时延-多普勒域信号，根据时延-多普勒域信号和导频序列进行信道估计，获取时延-多普勒域的等效信道，网络设备根据等效信道对数据区域的数据信号进行均衡处理，恢复出网络设备的数据信号，从而实现发送设备与接收设备之间的通信， 发送设备将导频序列映射至时延-多普勒域的导频区域的所有行，使得导频序列的能量分散在整个导频区域的时延域上，可以避免时延-多普勒域信号经过OTFS编码操作后存在能量较高的冲击信号，可以降低通信过程中的峰均值比，减小信号失真，提升通信质量。
并且网络设备可以灵活动态的向终端设备指示导频区域在时延-多普勒域中的位置、承载导频序列的资源单元的位置、导频序列、保护区域在时延-多普勒域中的位置中的一项或者多项。
对于下行传输，发送设备为网络设备，接收设备为终端设备，与上述图20所述实施例上行传输类似，网络设备可以向终端设备发送第一指示信息、第二指示信息、第三指示信息、或第四指示信息中任意一项或者多项，以与终端设备约定导频区域在时延-多普勒域中的位置、承载导频序列的资源单元的位置、导频序列、保护区域在时延-多普勒域中的位置中的一项或者多项。
上文中详细描述了根据本申请实施例的信号处理方法，下面将描述本申请实施例的无线通信装置。
本申请实施例详细描述了无线通信装置的示意性结构。
在一个示例中，图21示出了本申请实施例的一种无线通信装置2100的示意性框图。本申请实施例的装置2100可以是上述方法实施例中的发送设备，也可以是发送设备内的一个或多个芯片。装置2100可以用于执行上述方法实施例中的发送设备的部分或全部功能。该装置2100可以包括第一收发模块2110和第二处理模块2120，可选的，该装置2100还可以包括第一存储模块2130。
例如，该第一收发模块2110，可以用于执行前述方法实施例中的步骤S101中的获取导频序列，发送步骤103中的传输信号，或者用于接收步骤S201中来自网络设备的第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一种指示信息，发送步骤204中的传输信号。
该第一处理模块2120可以用于执行前述方法实施例中步骤S102，或者用于执行步骤S202和步骤203。
可以替换的，装置2100也可配置成通用处理系统，例如通称为芯片，该第一处理模块2120可以包括：提供处理功能的一个或多个处理器；所述第一收发模块2110例如可以是输入/输出接口、管脚或电路等，输入/输出接口可用于负责此芯片系统与外界的信息交互，例如，此输入/输出接口可将发送设备的传输信号输出给此芯片外的其他模块进行处理。该处理模块可执行存储模块中存储的计算机执行指令以实现上述方法实施例中发送设备的功能。在一个示例中，装置2100中可选的包括的第一存储模块2130可以为芯片内的存储单元，如寄存器、缓存等，所述第一存储模块2130还可以是所述发送设备内的位于芯片外部的存储单元，如只读存储器(read-only memory，简称ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，简称RAM)等。
在另一个示例中，图22示出了本申请实施例的另一种无线通信装置2200的示意性框图。本申请实施例的装置2200可以是上述方法实施例中的发送设备，装置2200可以用于 执行上述方法实施例中的发送设备的部分或全部功能。该装置2200可以包括：处理器2210，基带电路2230，射频电路2240以及天线2250，可选的，该装置2200还可以包括存储器2220。装置2200的各个组件通过总线2260耦合在一起，其中总线系统2260除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统2260。
处理器2210可用于实现对发送设备的控制，用于执行上述实施例中由发送设备进行的处理，可以执行上述方法实施例中涉及发送设备的处理过程和/或用于本申请所描述的技术的其他过程，还可以运行操作系统，负责管理总线以及可以执行存储在存储器中的程序或指令。
基带电路2230、射频电路2240以及天线2250可以用于支持发送设备和上述实施例中涉及的接收设备之间收发信息，以支持发送设备与接收设备之间进行无线通信。一个示例中，来自上行传输中的接收设备发送的第一指示信息经由天线2250接收，由射频电路2240进行滤波、放大、下变频以及数字化等处理后，再经由基带电路2230解码、按协议解封装数据等基带处理后，由处理器2210进行处理来恢复上行传输中的接收设备所发送的信令信息；又一个示例中，发送设备的传输信号可由处理器2210进行处理，经由基带电路2230进行按协议封装，编码等基带处理，进一步由射频电路2240进行模拟转换、滤波、放大和上变频等射频处理后，经由天线2250发射出去。
存储器2220可以用于存储发送设备的程序代码和数据，存储器2220可以是图21中的第一存储模块2130。可以理解的，基带电路2230、射频电路2240以及天线2250还可以用于支持发送设备与其他网络实体进行通信，例如,用于支持发送设备与核心网侧的网元进行通信。图22中存储器2220被示为与处理器2210分离，然而，本领域技术人员很容易明白，存储器2220或其任意部分可位于无线通信装置2200之外。举例来说，存储器2220可以包括传输线、和/或与无线节点分离开的计算机制品，这些介质均可以由处理器2210通过总线接口2260来访问。可替换地，存储器2220或其任意部分可以集成到处理器2210中，例如，可以是高速缓存和/或通用寄存器。
可以理解的是，图22仅仅示出了发送设备的简化设计。例如，在实际应用中，发送设备可以包含任意数量的发射器，接收器，处理器，存储器等，而所有可以实现本申请的发送设备都在本申请的保护范围之内。
一种可能的实现方式中，无线通信装置也可以使用下述来实现：一个或多个现场可编程门阵列(field-programmable gate array，FPGA)、可编程逻辑器件(programmable logic device，PLD)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。在又一个示例中，本申请实施例还提供一种计算机存储介质，该计算机存储介质可以存储用于指示上述任一种方法的程序指令，以使得处理器执行此程序指令实现上述方法实施例中涉及发送设备的方法和功能。
本申请实施例详细描述无线通信装置的示意性结构。在一个示例中，图23示出了本申请实施例的一种无线通信装置2300的示意性框图。本申请实施例的装置2300可以是上 述方法实施例中的接收设备，也可以是接收设备内的一个或多个芯片。装置2300可以用于执行上述方法实施例中的接收设备的部分或全部功能。该装置2300可以包括第二处理模块2310和第二收发模块2320，可选的，该装置2300还可以包括第二存储模块2330。
例如，该第二收发模块2320，可以用于接收前述方法实施例中的步骤S103的传输信号，或者用于接收步骤S204中来自发送设备的传输信号，或者用于发送步骤S201的第一指示信息、第二指示信息、第三指示信息或第四指示信息中至少一种指示信息；
该第二处理模块2310，可以用于执行前述方法实施例中的步骤S104，或者用于执行步骤S205和步骤206；
可以替换的，装置2300也可配置成通用处理系统，例如通称为芯片，该第二处理模块2310可以包括：提供处理功能的一个或多个处理器；所述第二收发模块例如可以是输入/输出接口、管脚或电路等，输入/输出接口可用于负责此芯片系统与外界的信息交互，例如，此输入/输出接口可将第一指示信息输出给此芯片外的其他模块进行处理。该一个或多个处理器可执行存储模块中存储的计算机执行指令以实现上述方法实施例中接收设备的功能。在一个示例中，装置2300中可选的包括的第二存储模块2330可以为芯片内的存储单元，如寄存器、缓存等，所述存储模块2330还可以是所述接收设备内的位于芯片外部的存储单元，如只读存储器(read-only memory，简称ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，简称RAM)等。
在另一个示例中，图24示出了本申请实施例的另一种无线通信装置2400的示意性框图。本申请实施例的装置2400可以是上述方法实施例中的接收设备，装置2400可以用于执行上述方法实施例中的接收设备的部分或全部功能。该装置2400可以包括：处理器2410，基带电路2430，射频电路2440以及天线2450，可选的，该装置2400还可以包括存储器2420。装置2400的各个组件通过总线2460耦合在一起，其中总线系统2460除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统2460。
处理器2410可用于实现对接收设备的控制，用于执行上述实施例中由接收设备进行的处理，可以执行上述方法实施例中涉及接收设备的处理过程和/或用于本申请所描述的技术的其他过程，还可以运行操作系统，负责管理总线以及可以执行存储在存储器中的程序或指令。
基带电路2430、射频电路2440以及天线2450可以用于支持接收设备和上述实施例中涉及的发送设备之间收发信息，以支持接收设备与发送设备之间进行无线通信。一个示例中，来自上行传输的发送设备发送的传输信号由天线2450接收，由射频电路进行滤波、放大、下变频以及数字化等处理后，再经由基带电路解码、按协议解封装数据等基带处理后，由处理器2410进行处理来恢复发送设备所发送的业务数据；又一个示例中，上行传输的接收设备的第一指示信息可以由处理器2410进行处理，经由基带电路2430进行按协议封装，编码等基带处理，进一步由射频电路2440进行模拟转换、滤波、放大和上变频等射频处理后，经由天线2450发射出去，存储器2420可以用于存储接收设备的程序代码和数据，存储器2420可以是图23中的存储模块2330。可以理解的，基带电路2430、射频电路2440以及天线2450还可以用于支持接收设备与其他网络实体进行通信，例如,用于支持接收设备与核心网设备进行通信。
可以理解的是，图24仅仅示出了接收设备的简化设计。例如，在实际应用中，接收设备可以包含任意数量的发射器，接收器，处理器，存储器等，而所有可以实现本申请的接收设备都在本申请的保护范围之内。
一种可能的实现方式中，无线通信装置也可以使用下述来实现：一个或多个现场可编程门阵列(field-programmable gate array，FPGA)、可编程逻辑器件(programmable logic device，PLD)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
在又一个示例中，本申请实施例还提供一种计算机存储介质，该计算机存储介质可以存储用于指示上述任一种方法的程序指令，以使得处理器执所述程序指令实现上述方法实施例中涉及接收设备的方法和功能。
上述装置2200和装置2400中涉及的处理器可以是通用处理器，例如通用中央处理器(CPU)、网络处理器(Network Processor，简称NP)、微处理器等，也可以是特定应用集成电路(application-specific integrated circBIt，简称ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。还可以是数字信号处理器(Digital Signal Processor，简称DSP)、现场可编程门阵列(Field-Programmable Gate Array，简称FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。控制器/处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。处理器通常是基于存储器内存储的程序指令来执行逻辑和算术运算。
上述装置2200和装置2400中涉及的存储器还可以保存有操作系统和其他应用程序。具体地，程序可以包括程序代码，程序代码包括计算机操作指令。更具体的，上述存储器可以是只读存储器(read-only memory，简称ROM)、可存储静态信息和指令的其他类型的静态存储设备、随机存取存储器(random access memory，简称RAM)、可存储信息和指令的其他类型的动态存储设备、磁盘存储器等等。存储器可以是上述存储类型的组合。并且上述计算机可读存储介质/存储器可以在处理器中，还可以在处理器的外部，或在包括处理器或处理电路的多个实体上分布。上述计算机可读存储介质/存储器可以具体体现在计算机程序产品中。举例而言，计算机程序产品可以包括封装材料中的计算机可读介质。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及 算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk)等。

Claims (30)

  1. 一种信号处理方法，其特征在于，包括：
    发送设备获取导频序列；
    所述发送设备将所述导频序列映射至时延-多普勒域的导频区域，将所述导频序列的循环前缀映射至所述时延-多普勒域的保护间隔，将数据信号映射至所述时延-多普勒域的数据区域，获取时延-多普勒域信号；其中，所述导频序列位于所述导频区域的所有行；
    所述发送设备向接收设备发送传输信号，所述传输信号为对所述时延-多普勒域信号进行处理得到的。
  2. 根据权利要求1所述的方法，其特征在于，所述保护间隔与所述导频区域的最后L行相同；L大于或者等于1。
  3. 根据权利要求1或2所述的方法，其特征在于，所述导频序列位于导频区域的相同列或不同列。
  4. 根据权利要求1或2所述的方法，其特征在于，所述导频序列位于所述导频区域的相邻或不相邻的n列中，所述n大于1。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述时延-多普勒域还包括保护区域，所述保护区域位于所述导频区域与所述数据区域之间，所述保护区域映射的信号为0。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，对于上行传输，所述方法还包括：
    所述发送设备接收如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  7. 根据权利要求1至5任一项所述的方法，其特征在于，对于下行传输，所述方法还包括：
    所述发送设备发送如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  8. 一种信号处理方法，其特征在于，包括：
    接收设备接收发送设备发送的传输信号，所述传输信号是由时延-多普勒域信号进行处理得到的，所述时延-多普勒域信号包括：映射导频序列的导频区域，映射所述导频序列的循环前缀的保护间隔，和映射数据信号的数据区域，所述导频序列位于所述导频区域 的所有行；
    所述接收设备根据所述时延-多普勒域信号和所述导频序列进行信道估计。
  9. 根据权利要求8所述的方法，其特征在于，所述保护间隔与所述导频区域的最后L行相同；L大于或者等于1。
  10. 根据权利要求8或9所述的方法，其特征在于，所述导频序列位于所述导频区域的相同列或不同列。
  11. 根据权利要求8或9所述的方法，其特征在于，所述导频序列位于所述导频区域的相邻或不相邻的n列中，所述n大于1。
  12. 根据权利要求8至11任一项所述的方法，其特征在于，所述时延-多普勒域信号还包括映射信号为0的保护区域，所述保护区域位于所述导频区域与所述数据区域之间。
  13. 根据权利要求8至12任一项所述的方法，其特征在于，对于上行传输，所述方法还包括：
    所述接收设备发送如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  14. 根据权利要求8至12任一项所述的方法，其特征在于，对于下行传输，所述方法还包括：
    所述接收设备接收如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  15. 一种无线通信装置，其特征在于，包括：
    第一收发模块，用于获取导频序列；
    第一处理模块，用于将所述导频序列映射至时延-多普勒域的导频区域，将所述导频序列的循环前缀映射至所述时延-多普勒域的保护间隔，将数据信号映射至所述时延-多普勒域的数据区域，获取时延-多普勒域信号；其中，所述导频序列位于所述导频区域的所有行；
    所述第一收发模块，还用于向接收设备发送传输信号，所述传输信号为对所述时延-多普勒域信号进行处理得到的。
  16. 根据权利要求15所述的装置，其特征在于，所述保护间隔与所述导频区域的最后L行相同；L大于或者等于1。
  17. 根据权利要求15或16所述的装置，其特征在于，所述导频序列位于导频区域的 相同列或不同列。
  18. 根据权利要求15或16所述的装置，其特征在于，所述导频序列位于所述导频区域的相邻或不相邻的n列中，所述n大于1。
  19. 根据权利要求15至18任一项所述的装置，其特征在于，所述时延-多普勒域还包括保护区域，所述保护区域位于所述导频区域与所述数据区域之间，所述保护区域映射的信号为0。
  20. 根据权利要求15至19任一项所述的装置，其特征在于，对于上行传输，所述第一收发模块还用于接收如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  21. 根据权利要求15至19任一项所述的装置，其特征在于，对于下行传输，所述第一收发模块还用于发送如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  22. 一种无线通信装置，其特征在于，包括：
    第二收发模块，用于接收发送设备发送的传输信号，所述传输信号是由时延-多普勒域信号进行处理得到的，所述时延-多普勒域信号包括：映射导频序列的导频区域，映射所述导频序列的循环前缀的保护间隔，和映射数据信号的数据区域，所述导频序列位于所述导频区域的所有行；
    第二处理模块，用于根据所述时延-多普勒域信号和所述导频序列进行信道估计。
  23. 根据权利要求22所述的装置，其特征在于，所述保护间隔与所述导频区域的最后L行相同；L大于或者等于1。
  24. 根据权利要求22或23所述的装置，其特征在于，所述导频序列位于所述导频区域的相同列或不同列。
  25. 根据权利要求22或23所述的装置，其特征在于，所述导频序列位于所述导频区域的相邻或不相邻的n列中，所述n大于1。
  26. 根据权利要求22至25任一项所述的装置，其特征在于，所述时延-多普勒域信号还包括映射信号为0的保护区域，所述保护区域位于所述导频区域与所述数据区域之间。
  27. 根据权利要求22至26任一项所述的装置，其特征在于，对于上行传输，所述第二收发模块还用于发送如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  28. 根据权利要求22至26任一项所述的装置，其特征在于，对于下行传输，所述第二收发模块还用于接收如下至少一种信息：
    第一指示信息，所述第一指示信息用于指示所述导频区域在所述时延-多普勒域中的位置；
    第二指示信息，所述第二指示信息用于指示承载所述导频序列的资源单元的位置；
    第三指示信息，所述第三指示信息用于指示所述导频序列；或者，
    第四指示信息，所述第四指示信息用于指示所述保护区域在所述时延-多普勒域中的位置。
  29. 一种无线通信装置，其特征在于，包括：处理器、存储器、收发器；所述收发器耦合至所述处理器，所述处理器控制所述收发器的收发动作；
    其中，所述存储器用于存储计算机可执行程序代码，所述程序代码包括指令；当所述处理器执行所述指令时，所述指令使所述无线通信装置执行如权利要求1至14任一项所述的方法。
  30. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现如权利要求1至14任一项所述的方法。
PCT/CN2020/088919 2019-05-27 2020-05-07 信号处理方法及装置 Ceased WO2020238573A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910446399.9 2019-05-27
CN201910446399.9A CN112003808B (zh) 2019-05-27 2019-05-27 信号处理方法及装置

Publications (1)

Publication Number Publication Date
WO2020238573A1 true WO2020238573A1 (zh) 2020-12-03

Family

ID=73461878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/088919 Ceased WO2020238573A1 (zh) 2019-05-27 2020-05-07 信号处理方法及装置

Country Status (2)

Country Link
CN (1) CN112003808B (zh)
WO (1) WO2020238573A1 (zh)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114915388A (zh) * 2021-02-09 2022-08-16 维沃移动通信有限公司 资源确定、配置方法及通信设备
US20230254793A1 (en) * 2022-02-08 2023-08-10 Qualcomm Incorporated Techniques for rate matching order for orthogonal time frequency space multiplexing
WO2023163911A1 (en) * 2022-02-23 2023-08-31 Qualcomm Incorporated Phase tracking reference signal phase noise tracking
CN116684225A (zh) * 2022-02-22 2023-09-01 维沃移动通信有限公司 多普勒信息上报方法、终端及网络侧设备
WO2023198071A1 (zh) * 2022-04-11 2023-10-19 维沃移动通信有限公司 信息传输方法、装置、终端及网络侧设备
US20230344582A1 (en) * 2020-12-25 2023-10-26 Vivo Mobile Communication Co., Ltd. Pilot transmission method and apparatus, device, and storage medium
WO2024254880A1 (zh) * 2023-06-16 2024-12-19 北京小米移动软件有限公司 一种通信资源确定方法、装置及设备
CN119582981A (zh) * 2024-10-28 2025-03-07 北京理工大学 一种基于模型库的航天射频信号质量多域评估及补偿方法
WO2025097346A1 (zh) * 2023-11-08 2025-05-15 北京小米移动软件有限公司 位置指示方法、终端、网络设备和存储介质
CN120512341A (zh) * 2025-07-22 2025-08-19 西安邮电大学 信号检测方法、装置、设备、存储介质及程序产品

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114629610B (zh) * 2020-12-11 2024-08-23 维沃移动通信有限公司 导频传输方法、装置、网络侧设备及存储介质
CN114629609B (zh) * 2020-12-11 2024-07-23 维沃移动通信有限公司 导频传输方法、装置、网络侧设备及存储介质
CN114916039B (zh) * 2021-02-10 2024-12-17 维沃移动通信有限公司 接入方法、装置、通信设备及可读存储介质
CN113193935B (zh) * 2021-04-26 2022-07-15 北京信息科技大学 用于无线通信的装置和方法
CN115589350A (zh) * 2021-07-05 2023-01-10 维沃移动通信有限公司 信号发送方法、接收方法、装置及设备
CN115776359A (zh) * 2021-09-06 2023-03-10 维沃移动通信有限公司 导频的发送、接收方法和设备
CN115842611A (zh) * 2021-09-18 2023-03-24 维沃移动通信有限公司 映射方法、装置、设备及存储介质
CN113890796B (zh) * 2021-09-30 2022-08-12 成都工业学院 基于otfs系统调制解调的高速信道估计装置及方法
CN115987465B (zh) * 2021-10-15 2025-09-09 维沃移动通信有限公司 信息映射方法及通信设备
CN116074162B (zh) * 2021-11-01 2024-07-26 大唐移动通信设备有限公司 信道估计和/或感知参数估计方法、装置、设备及可读存储介质
CN116699594A (zh) * 2022-02-28 2023-09-05 华为技术有限公司 多流感知信号生成方法、装置及系统
CN116781219A (zh) * 2022-03-11 2023-09-19 维沃移动通信有限公司 延迟多普勒域dd域的控制信道资源的指示方法及装置
CN116782261A (zh) * 2022-03-11 2023-09-19 维沃移动通信有限公司 质量信息确定方法、装置、终端及存储介质
CN116939817A (zh) * 2022-04-08 2023-10-24 维沃软件技术有限公司 控制信息的接收和发送方法、终端及网络侧设备
CN116938301A (zh) * 2022-04-11 2023-10-24 维沃移动通信有限公司 信息传输方法、装置、终端及网络侧设备
CN116980094A (zh) * 2022-04-21 2023-10-31 中国移动通信有限公司研究院 信号处理方法及装置
CN114826836B (zh) * 2022-04-25 2023-08-01 广州海格通信集团股份有限公司 信号生成方法、装置、信号发射设备以及存储介质
CN117478285A (zh) * 2022-07-21 2024-01-30 维沃移动通信有限公司 导频参数配置方法及设备
CN115442189B (zh) * 2022-08-23 2024-05-14 成都中科微信息技术研究院有限公司 一种适用于时频空间域的多天线信道估计方法、介质及装置
CN117792971A (zh) * 2022-09-21 2024-03-29 维沃移动通信有限公司 信号发送方法、信号接收方法及设备
CN118523994A (zh) * 2023-02-17 2024-08-20 维沃移动通信有限公司 信号处理方法、装置及通信设备
WO2024192644A1 (zh) * 2023-03-20 2024-09-26 华为技术有限公司 通信方法、通信装置及通信系统
CN116346177B (zh) * 2023-04-11 2026-04-10 中山大学 基于时域循环时延多普勒移位的信号处理方法和系统
WO2024250297A1 (zh) * 2023-06-09 2024-12-12 北京小米移动软件有限公司 一种通信方法及装置
WO2025035435A1 (zh) * 2023-08-16 2025-02-20 华为技术有限公司 一种通信方法及通信装置
WO2025081508A1 (zh) * 2023-10-20 2025-04-24 北京小米移动软件有限公司 感知参考信号传输方法、装置、设备、存储介质及系统
CN120391049A (zh) * 2023-11-29 2025-07-29 北京小米移动软件有限公司 通信方法、终端、网络设备和通信系统
CN120691998A (zh) * 2024-03-21 2025-09-23 华为技术有限公司 一种通信方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017100666A1 (en) * 2015-12-09 2017-06-15 Cohere Technologies Pilot packing using complex orthogonal functions
CN107819709A (zh) * 2017-10-26 2018-03-20 成都信息工程大学 一种移动目标检测的方法及装置
CN108770382A (zh) * 2015-09-07 2018-11-06 凝聚技术公司 使用正交时间频率空间调制的多路存取

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4068662A1 (en) * 2015-07-12 2022-10-05 Cohere Technologies, Inc. Orthogonal time frequency space communication system compatible with ofdm
US10063295B2 (en) * 2016-04-01 2018-08-28 Cohere Technologies, Inc. Tomlinson-Harashima precoding in an OTFS communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108770382A (zh) * 2015-09-07 2018-11-06 凝聚技术公司 使用正交时间频率空间调制的多路存取
WO2017100666A1 (en) * 2015-12-09 2017-06-15 Cohere Technologies Pilot packing using complex orthogonal functions
CN107819709A (zh) * 2017-10-26 2018-03-20 成都信息工程大学 一种移动目标检测的方法及装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
COHERE TECHNOLOGIES ET AL.: "OTFS Modulation Waveform and Reference Signals for New RAT", 3GPP TSG RA WG1 MEETING #84-BIS R1-162930, 2 April 2016 (2016-04-02), XP051080414, DOI: 20200719202649A *
RAVITEJA, P. ET AL.: "Embedded Pilot-Aided Channel Estimation for OTFS in Delay-Doppler Channels", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 68, NO. 5, MAY 2019 ), 20 March 2019 (2019-03-20), XP011725863, DOI: 20200719201953A *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230344582A1 (en) * 2020-12-25 2023-10-26 Vivo Mobile Communication Co., Ltd. Pilot transmission method and apparatus, device, and storage medium
CN114915388A (zh) * 2021-02-09 2022-08-16 维沃移动通信有限公司 资源确定、配置方法及通信设备
US20230254793A1 (en) * 2022-02-08 2023-08-10 Qualcomm Incorporated Techniques for rate matching order for orthogonal time frequency space multiplexing
US12309727B2 (en) * 2022-02-08 2025-05-20 Qualcomm Incorporated Techniques for rate matching order for orthogonal time frequency space multiplexing
CN116684225A (zh) * 2022-02-22 2023-09-01 维沃移动通信有限公司 多普勒信息上报方法、终端及网络侧设备
WO2023163911A1 (en) * 2022-02-23 2023-08-31 Qualcomm Incorporated Phase tracking reference signal phase noise tracking
WO2023198071A1 (zh) * 2022-04-11 2023-10-19 维沃移动通信有限公司 信息传输方法、装置、终端及网络侧设备
WO2024254880A1 (zh) * 2023-06-16 2024-12-19 北京小米移动软件有限公司 一种通信资源确定方法、装置及设备
WO2025097346A1 (zh) * 2023-11-08 2025-05-15 北京小米移动软件有限公司 位置指示方法、终端、网络设备和存储介质
CN119582981A (zh) * 2024-10-28 2025-03-07 北京理工大学 一种基于模型库的航天射频信号质量多域评估及补偿方法
CN120512341A (zh) * 2025-07-22 2025-08-19 西安邮电大学 信号检测方法、装置、设备、存储介质及程序产品

Also Published As

Publication number Publication date
CN112003808A (zh) 2020-11-27
CN112003808B (zh) 2021-12-28

Similar Documents

Publication Publication Date Title
WO2020238573A1 (zh) 信号处理方法及装置
EP3879777B1 (en) Sequence-based signal processing method and apparatus
EP4376369B1 (en) Sequence-based signal processing method and signal processing apparatus
EP3496368A1 (en) Data processing method, apparatus, and system
CN107370701A (zh) 传输信号的方法、发送端和接收端
EP4460064A1 (en) Symbol processing method and apparatus
JP7145273B2 (ja) 無線送信装置、及び、送信方法
EP3913876A1 (en) Data transmision method and device
US11245562B2 (en) Data processing method, apparatus, and system
KR20200035455A (ko) 시퀀스 기반의 신호 처리 방법 및 장치
US20230141169A1 (en) Sequence-based signal processing method and apparatus
CN111757367B (zh) 一种干扰检测方法、信号发送方法及装置
TWI733971B (zh) 信號傳輸方法和設備
EP3573275B1 (en) Signal sending and receiving method, apparatus and system in wireless communications
TWI762531B (zh) 資源映射的方法和通訊設備
WO2018126968A1 (zh) 一种信号发送、接收方法及装置
AU2017397672A1 (en) Radio communication method, terminal device, and network device
CN107666455A (zh) 一种传输信号的方法及网络设备
WO2019096268A1 (zh) 基于序列的信号处理方法及信号处理装置
US11252003B2 (en) Sequence-based signal processing method and apparatus
WO2020114317A1 (zh) 一种参考信号的传输方法及装置
WO2025232758A1 (zh) 通信方法及装置
CN120529366A (zh) 通信方法和装置
WO2016015190A1 (zh) 传输信息的方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20814827

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20814827

Country of ref document: EP

Kind code of ref document: A1