WO2021043068A1 - 数模混合波束赋形多通道的校正装置方法及装置 - Google Patents

数模混合波束赋形多通道的校正装置方法及装置 Download PDF

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Publication number
WO2021043068A1
WO2021043068A1 PCT/CN2020/111845 CN2020111845W WO2021043068A1 WO 2021043068 A1 WO2021043068 A1 WO 2021043068A1 CN 2020111845 W CN2020111845 W CN 2020111845W WO 2021043068 A1 WO2021043068 A1 WO 2021043068A1
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Prior art keywords
channel
amplitude
phase
correction
module
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PCT/CN2020/111845
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English (en)
French (fr)
Inventor
吴健
潘晓军
金鹤飞
叶勇
田珅
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中兴通讯股份有限公司
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Priority to EP20860755.6A priority Critical patent/EP4012938A4/en
Publication of WO2021043068A1 publication Critical patent/WO2021043068A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity
    • H04B7/0897—Space-time diversity using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA] at different multi-paths

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method and device for correcting multiple channels of digital-analog hybrid beamforming.
  • 5G's core technologies include high frequency band, large bandwidth, multiple antennas and beamforming. Beamforming is a key technology that determines the 5G system architecture and is the most difficult to implement.
  • Beamforming is based on the signal preprocessing technology of the antenna array. By adjusting the phase weight of each element in the antenna array, a directional beam is generated, which can obtain obvious array gain and realize functions such as beam scanning and beam tracking. Therefore, beamforming technology has great advantages in terms of expanding coverage, improving edge throughput, and interference suppression, but there is no effective beamforming channel correction scheme in related technologies.
  • the embodiments of the present disclosure provide a method and device for correcting multiple channels of digital-analog hybrid beamforming, so as to at least solve the problem that there is no solution for effective beamforming channel correction in the related art.
  • a method for correcting multiple channels of digital-analog hybrid beamforming includes: when the multiple channels are offline, performing the following correction method: testing the sub-array corresponding to each channel The amplitude and phase parameters of the m*n arrays; select one of the tested subarrays as the reference array; determine the phase and amplitude difference between the reference array and other arrays, and compensate based on the phase and amplitude difference ; Among them, m and n are positive integers; in the multi-channel online state, perform the following correction method: obtain the amplitude and phase value of each channel and the amplitude and phase value of the respective correction channel, determine the amplitude and phase of each channel The amplitude and phase difference between the value and the amplitude and phase value of the corresponding correction channel, and the phase weight of each channel is adjusted based on the amplitude and phase difference to make the phase and amplitude of each channel consistent.
  • a digital-analog hybrid beamforming multi-channel correction device including: a first correction module configured to perform the following correction method when the multi-channel is offline: testing and The amplitude and phase parameters of the m*n elements in the sub-array corresponding to each channel; select one element from the tested sub-array as the reference element; determine the phase and amplitude difference between the reference element and other elements, and based The phase and amplitude difference is compensated; where m and n are positive integers; the second correction module is set to perform the following correction method when the multi-channel is online: obtain the amplitude and phase value of each channel and their respective corrections The amplitude and phase value of the channel is determined, the amplitude and phase difference between the amplitude and phase value of each channel and the amplitude and phase value of the corresponding correction channel is determined, and the phase weight of each channel is adjusted based on the amplitude and phase difference to make the phase sum of each channel The amplitude is the same.
  • a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.
  • an electronic device including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute any of the above Steps in the method embodiment.
  • the amplitude and phase consistency of the internal analog end link of a single channel is realized through the off-line correction method; then the amplitude and phase consistency of the RFDAC between the channels to the coupled antenna is realized through the on-line correction method of antenna coupling.
  • the amplitude and phase consistency of all the antenna elements of the base station is solved, the problem that there is no effective beamforming channel correction scheme in the related technology is solved, and the gap in the related technology is filled.
  • FIG. 1 is a flowchart of a method for correcting multi-channel digital-analog hybrid beamforming according to an embodiment of the present disclosure
  • FIG. 2 is a structural block diagram of a digital-analog hybrid beamforming multi-channel correction and antenna detection system according to an embodiment of the present disclosure
  • Fig. 3 is a schematic structural diagram of an 8-channel digital-analog hybrid correction system according to an embodiment of the present disclosure
  • Fig. 4 is a normalized frequency spectrum synthesized by a time delay of 10 ns of two 640M millimeter wave signals according to an embodiment of the present disclosure
  • Fig. 5 is a normalized frequency spectrum synthesized by a 5ns time delay of two 640M millimeter wave signals according to an embodiment of the present disclosure
  • Fig. 6 is a normalized frequency spectrum synthesized with 1 ns time delay of two 640M millimeter wave signals according to an embodiment of the present disclosure
  • Fig. 7 is a normalized frequency spectrum synthesized by 100ps time delay of two 640M millimeter wave signals according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of a partitioned online detection scheme of a multi-channel large-scale array antenna according to the present disclosure
  • Fig. 9 is a structural block diagram of a multi-channel correction device for digital-analog hybrid beamforming according to an embodiment of the present disclosure.
  • FIG. 1 is a flowchart of the method for correcting multi-channel digital-analog hybrid beamforming according to an embodiment of the present disclosure, as shown in FIG. 1 , The process includes the following steps:
  • Step S102 when the multi-channel is offline, execute the following correction method: test the amplitude and phase parameters of m*n elements in the sub-array corresponding to each channel; select one element from the tested sub-array as Reference element: Determine the phase and amplitude difference between the reference element and other elements, and compensate based on the phase and amplitude difference; where m and n are positive integers;
  • the above-mentioned other sub-arrays are sub-arrays other than the reference sub-array among the tested sub-arrays.
  • Step S104 when the multiple channels are online, perform the following correction method: obtain the amplitude and phase value of each channel and the amplitude and phase value of the respective correction channel, and determine the amplitude and phase value of each channel and the amplitude and phase value of the corresponding correction channel The amplitude and phase difference between the two, adjust the phase weight of each channel based on the amplitude and phase difference to make the phase and amplitude of each channel consistent;
  • the amplitude and phase consistency of the internal analog end link of the single channel is realized by the offline correction method; then the amplitude and phase of the RFDAC between the channels to the coupled antenna is realized by the online correction method of antenna coupling.
  • the consistency thus realizes the consistency of the amplitude and phase of all the antenna elements of the base station, solves the problem that there is no effective beamforming channel correction scheme in the related technology, and fills the gap in the related technology.
  • the following calibration method steps are further performed:
  • Step S11 Set the initial phase and amplitude parameters corresponding to all the sub-arrays of the transmitter to be consistent and fix other parameter configurations of the channel;
  • Step S12 testing the amplitude and phase parameters of m*n arrays in the subarrays corresponding to each channel;
  • Step S13 select a period from the subarrays to be tested as a reference period
  • Step S14 Determine the phase and amplitude difference between the reference element and other elements, and perform compensation based on the phase and amplitude difference;
  • Step S15 Repeat steps S11 to S14 until all transmission channels are calibrated.
  • Step S21 Set the initial phase and amplitude parameters corresponding to all the sub-arrays of the transmitter to be consistent and fix other parameter configurations of the channel;
  • Step S22 testing the amplitude and phase parameters of m*n arrays in the subarrays corresponding to each channel;
  • Step S23 select a period from the subarrays to be tested as a reference period
  • Step S24 Determine the phase and amplitude difference between the reference element and other elements, and perform compensation based on the phase and amplitude difference;
  • Step S25 Repeat steps S21 to S24 until all receiving channels are calibrated.
  • Step S31 the DAC in the N channels of the transmitter simultaneously transmits the intermediate frequency signal containing the correction sequence, and is converted into a millimeter wave signal by the transmission processing module;
  • Step S32 Each millimeter wave signal is coupled to the correction channel through the antenna, and one millimeter wave signal is synthesized through the multi-channel combining and dividing module;
  • Step S33 the synthesized millimeter wave signal is processed by the calibration module and converted into an intermediate frequency signal
  • step S34 the calibration signal is switched back to the ADC of the designated channel through a switch, and the combined signal is demodulated to obtain the amplitude and phase value of each transmitting channel and the respective correction channel;
  • Step S35 subtracting the amplitude and phase value of the corresponding correction channel from the amplitude and phase value in the previous step S34 to calculate the amplitude and phase difference of each transmission link;
  • step S36 the phase difference of each channel is fed back to the BBU, and the baseband phase weight phase of each channel is adjusted to achieve the same phase of each channel.
  • step S37 the amplitude difference of each channel is adjusted to achieve the same amplitude of each channel by adjusting the digital attenuator in the TX module.
  • step S38 steps S31 to S37 need to be repeated every time the power is turned on again or after a fixed period of time.
  • Step S41 the receiver designates a DAC in a channel to transmit an intermediate frequency signal containing a correction sequence, and switches to the calibration channel via a switch;
  • Step S42 in the correction channel, the intermediate frequency signal is converted into a millimeter wave signal through the TX module, and is divided into N channels of millimeter wave signals through the switch and the multi-channel combining and splitting module;
  • Step S43 Couple N millimeter wave signals to each receiving channel through the coupling antenna, and convert them into digital signals through the receiving RX module and ADC;
  • Step S44 demodulate the digital signal received by each channel to obtain the amplitude and phase value of each receiving channel and the respective correction channel;
  • Step S45 subtracting the amplitude and phase value of the corresponding correction channel from the amplitude and phase value in the previous step S44 to calculate the amplitude and phase difference of each receiving link;
  • step S46 the phase difference of each channel is fed back to the BBU, and the signal phase weight of each receiving channel is adjusted to achieve the same phase of each channel;
  • Step S47 the amplitude difference of each channel is adjusted to achieve the same amplitude of each channel by adjusting the digital attenuator in the RX module;
  • step S48 step S41 to step S47 need to be repeated every time the power is turned on again or after a fixed period of time.
  • Step S106 obtain the coupling coefficient of each channel
  • Step S108 comparing the currently acquired coupling coefficient with the previously acquired coupling coefficient at regular intervals.
  • the first channel is opened for each element in the channel in turn, the baseband transmits a fixed power signal unchanged, and the coupling element next to the channel receives the spatial coupling
  • the incoming signal, the coupled signal is received through the feedback link, the power value is read and written into the table as the coupling coefficient of the channel, and so on, the coupling coefficient of each channel is recorded and written into the whole machine; Online detection is used to record the coupling coefficient.
  • the signal is transmitted in the non-service time slot at regular intervals. After coupling through the antenna, the received signal power of the feedback link is compared with the coupling coefficient of the element in the table. If the error is within a certain range, the period is considered normal, otherwise the period is judged to be abnormal.
  • This specific embodiment provides a digital-analog hybrid beamforming multi-channel correction and antenna detection system.
  • the architecture of the system is shown in Figure 2 and includes:
  • the baseband processing unit 101 is configured to complete baseband signal processing.
  • the field programmable gate array chip 102 is configured to realize high-speed digital signal processing in wireless communication.
  • the digital-to-analog conversion module 103 is configured to convert digital signals to analog signals.
  • the analog-to-digital conversion module 104 is configured to implement conversion from analog signals to digital signals.
  • the transmitting and transmitting module 105 is configured to realize the conversion of an intermediate frequency signal to a millimeter wave signal, and includes an intermediate frequency processing module, a filtering module, an up-conversion module, and a gain control module.
  • the receiving and transmitting module 106 is configured to realize the conversion of millimeter wave signals to intermediate frequency signals, and includes an intermediate frequency processing module, a filtering module, a down-conversion module, and a gain control module.
  • the transceiver switch 107 is set to control the transceiver switch of the radio frequency channel to realize time division duplexing.
  • the multi-channel combining and dividing module 108 is configured to combine or separate the transmitted and received signals to realize the function of digital-analog hybrid beamforming.
  • the amplitude and phase modulation module 109 is configured to simultaneously control the amplitude and phase of multiple antenna elements.
  • the antenna sub-array 110 is set to correspond to an m*n antenna sub-array for each channel.
  • This sub-array can independently perform beam waveforms, or can be combined with other channel antenna sub-arrays for beamforming.
  • the antenna coupling element 111 is set as an element in the coupling antenna sub-array to realize the functions of correction and detection.
  • the multi-channel combining and dividing module 112 is configured to combine or separate multiple transmission or reception coupling signals to realize simultaneous online calibration of multiple channels.
  • the transceiving switch 113 is set to control the radio frequency transceiving switching of the correction link to realize transceiving correction.
  • the transmitting and transmitting module 114 is configured to realize the conversion of an intermediate frequency signal to a millimeter wave signal, and includes an intermediate frequency processing module, a filtering module, an up-conversion module, and a gain control module.
  • the receiving and transmitting module 115 is configured to realize the conversion of millimeter wave signals to intermediate frequency signals, and includes an intermediate frequency processing module, a filtering module, a down-conversion module, a gain control module, and the like.
  • the switch 116 is set to switch between calibration and transmission to realize the uplink correction function.
  • the switch 117 is set to switch between calibration and reception to realize the downlink correction function.
  • the calibration process in this specific embodiment includes:
  • the steps of the off-line calibration process of the transmitting channel include:
  • step S201 off-line calibration is started, and the link to be calibrated is from end face B to end face A, that is, includes an amplitude and phase modulation module and an antenna array.
  • step S202 the initial phase and amplitude parameters corresponding to all the sub-arrays of the transmitter are set to be consistent, the initial phase is generally set to 0 degrees, and other parameter configurations of the channel are fixed.
  • Step S203 testing the amplitude and phase parameters of m*n arrays in each sub-array.
  • step S204 one of the sub-arrays is selected as a reference, the phase and amplitude differences of other sub-arrays are analyzed, and the beam codebook is compensated to ensure that the amplitudes are consistent.
  • Step S205 the offline calibration process of other N-1 channels repeats steps S203 to S204.
  • step S301 the online calibration is started, and the link to be corrected is from the end face C to the end face A.
  • Step S302 the DAC in the N channels of the transmitter simultaneously transmits an intermediate frequency signal containing a correction sequence, and is converted into a millimeter wave signal by the transmission processing module.
  • each millimeter wave signal is coupled to the correction channel through the antenna, and one millimeter wave signal is synthesized through the multi-channel combining and splitting module.
  • step S304 the synthesized millimeter wave signal is processed by the calibration module and converted into an intermediate frequency signal.
  • step S305 the calibration signal is switched back to the ADC of the designated channel through a switch, and the combined signal is demodulated to obtain the amplitude and phase value of each transmitting channel and the respective correction channel.
  • Step S306 subtracting the amplitude and phase value of the corresponding correction channel from the amplitude and phase value of the previous step can calculate the amplitude and phase difference of each transmission link.
  • step S307 the phase difference of each channel is fed back to the BBU, and the baseband phase weight phase of each channel is adjusted to achieve the same phase of each channel.
  • step S308 the amplitude difference of each channel is adjusted to achieve the same amplitude of each channel by adjusting the digital attenuator in the TX module.
  • step S309 step 302 to step S308 need to be repeated every time the power is turned on again or after a fixed period of time.
  • step S401 off-line calibration is started, and the link to be calibrated is from end face B to end face A, that is, includes an amplitude and phase modulation module and an antenna array.
  • Step S402 Set the initial phase and amplitude parameters corresponding to all sub-arrays of the wave control module to be consistent, the initial phase is generally set to 0 degrees, and other parameter configurations of the channel are fixed.
  • Step S403 testing the amplitude and phase parameters of m*n arrays in each subarray.
  • step S404 one of the sub-arrays is selected as a reference, the phase and amplitude differences of other sub-arrays are analyzed, and compensation is made in the beam codebook to ensure that the amplitudes are consistent.
  • step S405 the offline calibration process of other N-1 channels repeats step S403 to step S404.
  • the steps of the receiving channel online calibration process include:
  • step S501 online calibration is started, and the link to be corrected is from end face A to end face C.
  • step S502 the receiver designates a DAC in a channel to transmit an intermediate frequency signal containing a correction sequence, and switches to the calibration channel via a switch.
  • step S503 in the correction channel, the intermediate frequency signal is converted into a millimeter wave signal through the TX module, and is divided into N channels of millimeter wave signals through the switch and the multi-channel combining and splitting module.
  • step S504 N millimeter wave signals are coupled to each receiving channel through the coupling antenna, and converted into digital signals by the receiving RX module and ADC.
  • Step S505 demodulate the digital signal received by each channel to obtain the amplitude and phase value of each receiving channel and the respective correction channel.
  • Step S506 Subtract the amplitude and phase value of the corresponding correction channel from the amplitude and phase value of the previous step to calculate the amplitude and phase difference of each receiving link.
  • step S507 the phase difference of each channel is fed back to the BBU, and the signal phase weight of each receiving channel is adjusted to achieve the same phase of each channel.
  • step S508 the amplitude difference of each channel is adjusted to achieve the same amplitude of each channel by adjusting the digital attenuator in the RX module.
  • step S509 steps S502 to S508 need to be repeated every time the power is turned on again or after a fixed period of time.
  • Fig. 3 is a schematic structural diagram of an 8-channel digital-analog hybrid correction system according to an embodiment of the present disclosure.
  • the 8-channel digital-analog hybrid correction method in this application includes the following methods:
  • step S601 off-line calibration is started, and the link to be calibrated is from end face B to end face A, that is, includes an amplitude and phase modulation module and an antenna array.
  • step S602 the initial phase and amplitude parameter settings corresponding to all the sub-arrays transmitted by the wave control module are consistent, the initial phase is generally set to 0 degrees, and other parameter configurations of the channel are fixed.
  • step S603 the amplitude and phase parameters of 16*8 arrays in each subarray are tested.
  • step S604 one of the sub-arrays is selected as a reference, the phase and amplitude differences of other sub-arrays are analyzed, and the beam codebook is compensated to ensure that the amplitudes are consistent.
  • step S605 the offline calibration process of the other 7 channels repeats the steps from S603 to S604.
  • step S701 the online calibration is started, and the link to be corrected is from the end face C to the end face A.
  • Step S702 the DAC in the 8 channels of the transmitter simultaneously transmits the intermediate frequency signal containing the correction sequence, and is converted into a millimeter wave signal by the transmission processing module.
  • step S703 8 millimeter wave signals are coupled to the correction channel through the antenna, and one millimeter wave signal is synthesized through the multi-channel combining and splitting module.
  • step S704 the synthesized millimeter wave signal is processed by the calibration module and converted into an intermediate frequency signal.
  • step S705 the calibration signal is switched back to the ADC of the designated channel through a switch, and the combined signal is demodulated to obtain the amplitude and phase value of each transmitting channel and the respective correction channel.
  • Step S706 Subtract the amplitude and phase value of the corresponding correction channel from the amplitude and phase value of the previous step to calculate the amplitude and phase difference of each transmission link.
  • step S707 the 8-channel phase difference is fed back to the BBU, and the baseband phase weight phase of each channel is adjusted to achieve the same phase of each channel.
  • step S708 the amplitude difference of the 8 channels is adjusted to achieve the same amplitude of each channel by adjusting the digital attenuator in the TX module.
  • step S709 the steps from S702 to S708 need to be repeated every time the power is turned on again or after a fixed period of time.
  • step S801 off-line calibration is initiated, and the link to be calibrated is from end face B to end face A, that is, includes an amplitude and phase modulation module and an antenna array.
  • step S802 the initial phase and amplitude parameter settings corresponding to all the sub-arrays received by the wave control module are consistent, the initial phase is generally set to 0 degrees, and other parameter configurations of the channel are fixed.
  • step S803 the amplitude and phase parameters of 16*8 arrays in each subarray are tested.
  • step S804 one of the sub-arrays is selected as a reference, the phase and amplitude differences of other sub-arrays are analyzed, and compensation is performed in the beam codebook to ensure that the amplitudes are consistent.
  • step S805 the offline calibration process of the other 7 channels repeats the steps from S803 to S804.
  • step S901 online calibration is started, and the link to be corrected is from end face A to end face C.
  • step S902 the receiver designates a DAC in a channel to transmit an intermediate frequency signal containing a correction sequence, and switches to the calibration channel via a switch.
  • step S903 in the correction channel, the intermediate frequency signal is converted into a millimeter wave signal through the TX module, and is divided into 8 millimeter wave signals through the switch and the multi-channel combining and splitting module.
  • step S904 8 millimeter wave signals are coupled to each receiving channel through the coupling antenna, and converted into digital signals by the receiving RX module and ADC.
  • Step S905 demodulate the digital signal received by each channel to obtain the amplitude and phase value of each receiving channel and respective correction channel.
  • Step S906 Subtract the amplitude and phase value of the corresponding correction channel from the amplitude and phase value of the previous step to calculate the amplitude and phase difference of each receiving link.
  • step S907 the 8-channel phase difference is fed back to the BBU, and the signal phase weight of each receiving channel is adjusted to achieve the same phase of each channel.
  • step S908 the amplitude difference of the 8 channels is adjusted to achieve the consistency of the amplitude of each channel by adjusting the digital attenuator in the RX module.
  • step S909 the steps from S902 to S908 need to be repeated every time the power is turned on again or after a fixed period of time.
  • Figures 4 to 7 are the normalized spectrograms of channel synthesis caused by different delays after each power-on before online calibration. It can be seen that when the time delay is 1ns, 5ns, and 10ns, the two channels are synthesized in the 640M bandwidth.
  • an implementation method of an online detection system based on an 8-channel antenna is also provided, and the steps of the method include:
  • step S1001 in the production process of the whole machine, the coupling coefficient is extracted online.
  • step S1002 1 channel is turned on.
  • the 128 elements of this channel transmit signals in sequence, and the coupled elements respectively receive the power of each element through spatial coupling.
  • step S1003 the recorded power is written into the offline parameter table.
  • the channel will have 128 coupling coefficients.
  • Step S1004 Repeat steps S1002 to S1003 to extract all the coupling coefficients of each of the 8 channels as offline parameter files and write them into the whole machine.
  • Step S1005 start antenna element detection during use.
  • Step S1006 Turn on 1 channel.
  • the 128 channels of this channel sequentially transmit signals in the non-service time slots, and the coupled cells receive the power of each cell through spatial coupling.
  • step S1007 through the previous step, all the coupling coefficients of each element of the 8 channels are extracted.
  • Step S1008 Compare the extracted coupling coefficient with the offline parameter file that has been written during production. If the difference is within 4dB, it is considered normal, otherwise, it is abnormal.
  • Step S1009 Repeat S1005 to S1008 at a fixed interval of time. If an abnormality occurs for the same period three times in a row, an abnormality alarm for that period is reported.
  • FIG. 8 is a schematic diagram of a partitioned online detection scheme for a multi-channel large-scale array antenna according to the present disclosure.
  • the coupling element in the partition shown in FIG. 8 is combined by a multi-channel combining and splitting module and then receiving signals through a coupling link. Based on this, this
  • the application provides an online detection method for multi-channel antenna partitions, in which the area is divided so that the coupling element can receive the power in the area, and the shapes of the divided areas include squares, circles and other shapes.
  • the steps of the method include:
  • step S1101 the coupling coefficient of each element (except the coupling element) of the N channels is extracted during the production process of the whole machine.
  • Step S1102 dividing the I*J arrays of each channel into i rows and j columns, i.e. a total of i*j regions.
  • Step S1103 Turn on 1 channel, all elements of the channel (except the coupling element) transmit signals in sequence, and the coupling element receives the power of each element through spatial coupling.
  • step S1104 the recorded power is written into the offline parameter table as the coupling coefficient of the element relative to the coupling element of the region.
  • Step S1107 Turn on 1 channel. All elements of the channel (except coupling elements) sequentially transmit signals in non-service time slots.
  • the coupled elements receive the power of each element through spatial coupling, and the power is used as the coupling coefficient detected online.
  • Step S1108 through the previous step, all the coupling coefficients of each element of the N channels are extracted.
  • Step S1109 Compare the extracted coupling coefficient with the offline parameters that have been written during production. If the difference is within t, it is considered normal, otherwise, it is abnormal.
  • Step S1110 Repeat S1106 to S1109 at regular intervals. If an abnormality occurs for the same period three times in a row, an abnormality alarm for that period is reported.
  • the method according to the above embodiments can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation.
  • the technical solution of the present disclosure essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.
  • a digital-analog hybrid beamforming multi-channel correction device is also provided, which is used to implement the above-mentioned embodiments and preferred implementations, and what has been described will not be repeated.
  • the term "module” can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • FIG. 9 is a structural block diagram of a multi-channel correction device for digital-analog hybrid beamforming according to an embodiment of the present disclosure.
  • the device includes: a first correction module 92, which is set to be in an offline state when the multi-channel is offline, Perform the following correction methods: test the amplitude and phase parameters of the m*n elements in the sub-array corresponding to each channel; select one element from the tested sub-array as the reference element; determine the phase of the reference element and other elements And the amplitude difference, and compensate based on the phase and amplitude difference; where m and n are positive integers; the second correction module 94 is set to perform the following correction method when the multi-channel is online: obtain the amplitude of each channel Phase value and the amplitude and phase value of each correction channel, determine the amplitude and phase difference between the amplitude and phase value of each channel and the amplitude and phase value of the corresponding correction channel, and adjust the phase weight of each channel based on the amplitude and phase
  • the first correction module when the multi-channel is the transmission channel and is in an offline state, includes: a first processing unit configured to set the initial phase and amplitude parameters corresponding to the elements in all the sub-arrays of the transmitter to be consistent and combined Other parameter configuration of the fixed channel; the first test unit is set to test the amplitude and phase parameters of m*n arrays in the sub-array corresponding to each channel; the first selection unit is set to the array from the tested sub-array One element is selected as the reference element; the second processing unit is configured to determine the phase and amplitude difference between the reference element and the other elements, and compensate based on the phase and amplitude difference, until all transmission channels are corrected.
  • the first correction module includes: a third processing unit configured to set the initial phase and amplitude parameters corresponding to the elements in all the sub-arrays of the transmitter to be consistent and combined Other parameter configuration of the fixed channel; the second test unit is set to test the amplitude and phase parameters of m*n arrays in the sub-array corresponding to each channel; the second selection unit is set to the array from the tested sub-array One element is selected as the reference element; the fourth processing unit is configured to determine the phase and amplitude difference between the reference element and other elements, and compensate based on the phase and amplitude difference, until all receiving channels are corrected.
  • the second correction module when the multi-channel is a transmission channel and is in an online state, includes: a fifth processing unit configured to simultaneously transmit an intermediate frequency signal containing a correction sequence from the DAC in the N channels of the transmitter , And converted into a millimeter wave signal by the transmission processing module; the sixth processing unit is set to couple each millimeter wave signal to the correction channel through the antenna, and synthesize one millimeter wave signal through the multi-channel combining and dividing module; The millimeter wave signal is processed by the calibration module and converted into an intermediate frequency signal; the seventh processing unit is set to switch the calibration signal back to the ADC of the specified channel through a switch, and the combined signal is demodulated and combined to obtain the transmission channel and the respective correction channel.
  • a fifth processing unit configured to simultaneously transmit an intermediate frequency signal containing a correction sequence from the DAC in the N channels of the transmitter , And converted into a millimeter wave signal by the transmission processing module
  • the sixth processing unit is set to couple each millimeter wave signal to the correction channel through the antenna,
  • the first calculation unit is configured to subtract the amplitude and phase value of the corresponding correction channel from the amplitude and phase value to calculate the amplitude and phase difference of each transmission link;
  • the eighth processing unit is configured to feed back the phase difference of each channel to BBU, by adjusting the baseband phase weight of each channel to achieve the same phase of each channel;
  • the first demodulation unit set to the amplitude difference of each channel, adjust the digital attenuator in the TX module to achieve the amplitude of each channel
  • the first execution unit is set to trigger the second calibration module to execute the calibration method again every time it is powered on or after a fixed period of time.
  • the second correction module includes: a ninth processing unit, which is configured to specify the DAC in one channel to transmit an intermediate frequency signal containing a correction sequence by the receiver, and the switch Switch to the calibration channel; the tenth processing unit is set in the calibration channel, the intermediate frequency signal is converted into a millimeter wave signal through the TX module, and is divided into N channels of millimeter wave signals through the switch and the multiplexer module; the eleventh processing The unit is set to couple N millimeter wave signals to each receiving channel through a coupling antenna, and converts them into digital signals by the receiving RX module and ADC; the demodulation unit is set to demodulate the digital signals received by each channel to obtain each The amplitude and phase value of each receiving channel and the respective correction channel; a second calculation unit, configured to subtract the amplitude and phase value of the corresponding correction channel from the amplitude and phase value to calculate the amplitude and phase difference of each receiving link; a twelf
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules can be combined in any combination.
  • the forms are located in different processors.
  • the embodiment of the present disclosure also provides a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.
  • the aforementioned storage medium may be configured to store a computer program for executing the following steps:
  • S1 when the multi-channel is offline, perform the following correction method: test the amplitude and phase parameters of the m*n arrays in the sub-array corresponding to each channel; select one array from the tested sub-arrays as a reference Array; Determine the phase and amplitude difference between the reference array and other arrays, and compensate based on the phase and amplitude difference; where m and n are positive integers;
  • S2 when the multi-channel is online, execute the following correction method: obtain the amplitude and phase value of each channel and the amplitude and phase value of the respective correction channel, and determine the difference between the amplitude and phase value of each channel and the amplitude and phase value of the corresponding correction channel. Adjust the phase weight of each channel based on the amplitude and phase difference to make the phase and amplitude of each channel consistent.
  • the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (Random Access Memory, RAM for short), Various media that can store computer programs, such as mobile hard disks, magnetic disks, or optical disks.
  • An embodiment of the present disclosure also provides an electronic device, including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute the steps in any of the foregoing method embodiments.
  • the aforementioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor, and the input-output device is connected to the aforementioned processor.
  • the foregoing processor may be configured to execute the following steps through a computer program:
  • S1 when the multi-channel is offline, perform the following correction method: test the amplitude and phase parameters of the m*n arrays in the sub-array corresponding to each channel; select one array from the tested sub-arrays as a reference Array; Determine the phase and amplitude difference between the reference array and other arrays, and compensate based on the phase and amplitude difference; where m and n are positive integers;
  • S2 when the multi-channel is online, execute the following correction method: obtain the amplitude and phase value of each channel and the amplitude and phase value of the respective correction channel, and determine the difference between the amplitude and phase value of each channel and the amplitude and phase value of the corresponding correction channel. Adjust the phase weight of each channel based on the amplitude and phase difference to make the phase and amplitude of each channel consistent.
  • modules or steps of the present disclosure can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed in a network composed of multiple computing devices.
  • they can be implemented with program codes executable by the computing device, so that they can be stored in the storage device for execution by the computing device, and in some cases, can be executed in a different order than here.

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Abstract

本申请提供了一种数模混合波束赋形多通道的校正方法及装置；其中该方法包括：在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿；其中，m和n为正整数；在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定所述每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于所述幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。通过本申请，解决了相关技术中还未存在有效进行波束赋形通道的校正的方案的问题。

Description

数模混合波束赋形多通道的校正装置方法及装置 技术领域
本公开涉及通信领域，具体而言，涉及一种数模混合波束赋形多通道的校正装置方法及装置。
背景技术
5G作为第五代移动通信网络，其核心技术包括高频段、大带宽、多天线和波束赋形。而波束赋形是决定5G系统架构，实现难度最大的一项关键技术。
波束赋形基于天线阵列的信号预处理技术，通过调整天线阵列中每个阵元的相位权值产生具有指向性的波束，从而能够获得明显的阵列增益，实现波束扫描、波束跟踪等功能。因此，波束赋形技术在扩大覆盖范围、改善边缘吞吐量以及干扰抑止等方面都有很大的优势，但相关技术中还未存在有效进行波束赋形通道的校正的方案。
发明内容
本公开实施例提供了一种数模混合波束赋形多通道的校正装置方法及装置，以至少解决相关技术中还未存在有效进行波束赋形通道的校正的方案的问题。
根据本公开的一个实施例，提供了一种数模混合波束赋形多通道的校正方法，包括：在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿；其中，m和n为正整数；在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定所述每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于所述幅相差调节各个通道的相位权值以使每个通道的相位和幅 度一致。
根据本公开的另一个实施例，提供了一种数模混合波束赋形多通道的校正装置，包括：第一校正模块，设置为在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿；其中，m和n为正整数；第二校正模块，设置为在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定所述每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于所述幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。
根据本公开的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本公开的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本公开，先通过离线校正方法来实现了单通道内部模拟端链路的幅相一致性；再通过天线耦合的在线校正方式来实现通道之间RFDAC到耦合天线处的幅相一致性从而实现了基站所有天线阵子的幅相一致性，解决了相关技术中还未存在有效进行波束赋形通道的校正的方案的问题，填补了相关技术中的空白。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是根据本公开实施例的数模混合波束赋形多通道的校正方法的流程图；
图2是根据本公开实施例的数模混合波束赋形多通道校正及天线检测系统的结构框图；
图3是根据本公开实施例的8通道数模混合校正系统的结构示意图；
图4是根据本公开实施例的两路640M毫米波信号10ns时延时合成的归一化频谱；
图5是根据本公开实施例的两路640M毫米波信号5ns时延时合成的归一化频谱；
图6是根据本公开实施例的两路640M毫米波信号1ns时延时合成的归一化频谱；
图7是根据本公开实施例的两路640M毫米波信号100ps时延时合成的归一化频谱；
图8根据本公开的多通道大规模阵列天线分区在线检测方案的示意图；
图9是根据本公开实施例的数模混合波束赋形多通道的校正装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等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。
实施例1
在本实施例中提供了一种数模混合波束赋形多通道的校正方法，图1是根据本公开实施例的数模混合波束赋形多通道的校正方法的流程图，如图1所示，该流程包括如下步骤：
步骤S102，在多通道为离线状态下，执行下述校正方法：测试与每 一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定参考阵子与其他阵子的相位和幅度差，并基于相位和幅度差进行补偿；其中，m和n为正整数；
其中，上述其他子阵为被测试的子阵中除参考子阵以外的其他子阵。
步骤S104，在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致；
通过上述步骤S102至步骤S104，先通过离线校正方法来实现了单通道内部模拟端链路的幅相一致性；再通过天线耦合的在线校正方式来实现通道之间RFDAC到耦合天线处的幅相一致性从而实现了基站所有天线阵子的幅相一致性，解决了相关技术中还未存在有效进行波束赋形通道的校正的方案的问题，填补了相关技术中的空白。
在本申请的可选实施方式中，在多通道为发送通道且为离线状态下，进一步执行下述校正方法步骤：
步骤S11，将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；
步骤S12，测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；
步骤S13，从被测试的子阵的阵子中选一个阵子作为参考阵子；
步骤S14，确定参考阵子与其他阵子的相位和幅度差，并基于相位和幅度差进行补偿；
步骤S15，重复执行步骤S11至步骤S14，直到所有发送通道均被校正。
在本申请的另一个可选实施方式中，在多通道为接收通道且为离线状态下，进一步执行下述校正方法步骤：
步骤S21，将发射机所有子阵中的阵子对应的初始相位和幅度参数设 置一致并固定通道的其它参数配置；
步骤S22，测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；
步骤S23，从被测试的子阵的阵子中选一个阵子作为参考阵子；
步骤S24，确定参考阵子与其他阵子的相位和幅度差，并基于相位和幅度差进行补偿；
步骤S25，重复执行步骤S21至步骤S24，直到所有接收通道均被校正。
在本申请的再一个可选实施方式中，在多通道为发送通道且为在线状态下，进一步执行下述校正方法步骤：
步骤S31，由发射机的N路通道中DAC同时发射含校正序列的中频信号，并经发射处理模块转换成毫米波信号；
步骤S32每路毫米波信号经天线耦合到校正通道，经多路合分模块合成一路毫米波信号；
步骤S33，合成后的毫米波信号经校准模块处理转换成中频信号；
步骤S34，通过开关将校准信号切换回指定一路通道的ADC中，解调汇合后的信号得到每个发射通道和各自校正通道的幅相值；
步骤S35，将上一步骤S34中的幅相值减去对应校正通道的幅相值可算出每个发射链路幅相差；
步骤S36，将各通道相位差反馈给BBU，通过调节各通道的基带相位权值相位达到每个通道的相位一致。
步骤S37，各通道的幅值差则通过调节TX模块中的数字衰减器来达到每个通道幅度的一致。
步骤S38，每次重新上电或隔固定一段时间需要重复执行步骤S31至步骤S37。
在本申请的又一个可选实施方式中，在多通道为接收通道且为在线状态下，进一步执行下述校正方法步骤：
步骤S41，由接收机指定一路通道中DAC发射含校正序列的中频信号，并经开关切换到校准通道；
步骤S42，在校正通道中，中频信号经过TX模块转换成毫米波信号，并经过开关和多路合分模块分成N路毫米波信号；
步骤S43，经过耦合天线将N路毫米波信号耦合到每路接收通道中，经接收RX模块和ADC转换成数字信号；
步骤S44，解调每个通道收到的数字信号得到每个接收通道和各自校正通道的幅相值；
步骤S45，将上一步骤S44中的幅相值减去对应校正通道的幅相值计算出每个接收链路幅相差；
步骤S46，将各通道相位差反馈给BBU，通过调节各接收通道的信号相位权值从而达到每个通道的相位一致；
步骤S47，各通道的幅值差则通过调节RX模块中的数字衰减器来达到每个通道幅度的一致；
步骤S48，每次重新上电或隔固定一段时间需要重复执行步骤S41至步骤S47。
本实施例的方法还可以包括：
步骤S106，获取每一个通道的耦合系数；
步骤S108，每隔固定时间比较当前获取到的耦合系数与之前获取的耦合系数。
对于上述步骤S106至步骤S108，在具体应用场景中可以是：第一个通道先依次开通该通道中的每个阵子，基带发射固定功率的信号不变，该通道旁的耦合阵子接收到空间耦合过来信号，耦合回来的信号通过反馈链路接收，读取功率数值并写入表格，作为该通道耦合系数，以此类推记录每个通道所有阵子的耦合系数，写入到整机中；然后通过在线检测的方式来实现记录耦合系数，每隔一段固定的时间在非业务时隙发射信号，通过 天线耦合后，反馈链路接收信号功率并与表格中该阵子的耦合系数做比较。如果误差在一定范围以内，则认为该阵子正常，反之该阵子判定为异常。
下面结合本申请的具体实施方式进行举例说明；
本具体实施方式提供了一种数模混合波束赋形多通道校正及天线检测系统，该系统的架构如图2所示，包括：
基带处理单元101，设置为完成基带信号处理。
现场可编程门阵列芯片102，设置为实现无线通信中的高速数字信号处理。
数模转换模块103，设置为实现数字信号到模拟信号的转换。
模数转换模块104，设置为实现模拟信号到数字信号的转换。
发射传输模块105，设置为实现中频信号到毫米波信号的转换，包括中频处理模块、滤波模块、上变频模块和增益控制模块等。
接收传输模块106，设置为实现毫米波信号到中频信号的转换，包括中频处理模块、滤波模块、下变频模块和增益控制模块等。
收发切换开关107，设置为控制射频通道收发切换，实现时分双工。
多路合分模块108，设置为将发射和接收信号合并或分离，实现数模混合波束赋形功能。
调幅调相模块109，设置为同时实现对多个天线单元幅度和相位的控制。
天线子阵110，设置为每个通道对应一个m*n的天线子阵，该子阵可独立的进行波束波形，也可和其它通道的天线子阵联合波束赋形。
天线耦合阵子111，设置为耦合天线子阵中的阵子，实现校正和检测的功能。
多路合分模块112，设置为将多路发射或接收耦合信号合并或分离，实现多路同时在线校准。
收发切换开关113，设置为控制校正链路射频收发切换，实现收发校正。
发射传输模块114，设置为实现中频信号到毫米波信号的转换，包括中频处理模块、滤波模块、上变频模块和增益控制模块等。
接收传输模块115，设置为实现毫米波信号到中频信号的转换，包括中频处理模块、滤波模块、下变频模块和增益控制模块等。
切换开关116，设置为校准发切换使用，实现上行链路校正功能。
切换开关117，设置为校准收切换使用，实现下行链路校正功能。
基于上述图2所示的数模混合波束赋形多通道校正及天线检测系统，本具体实施方式中校准流程包括：
(1)其中发射通道离线校准流程的步骤包括：
步骤S201，启动离线校准，需要校准的链路为端面B到端面A，即包括调幅调相模块和天线阵列。
步骤S202，将发射机所有子阵阵子对应的初始相位和幅度参数设置一致，初始相位一般设置成0度，并固定通道的其它参数配置。
步骤S203，测试每个子阵中m*n个阵子的幅相参数。
步骤S204，在子阵挑选一个阵子作为参考，分析其它阵子的相位和幅度差，在波束码本中补偿，保证幅相一致。
步骤S205，其它N-1个通道的离线校准流程重复步骤S203至S204。
(2)发射通道在线校准流程的步骤包括：
步骤S301，启动在线校准，需要校正的链路从端面C到端面A。
步骤S302，发射机的N路通道中DAC同时发射含校正序列的中频信号，并经发射处理模块转换成毫米波信号。
步骤S303，每路毫米波信号经天线耦合到校正通道，经多路合分模块合成一路毫米波信号。
步骤S304，合成后的毫米波信号经校准模块处理转换成中频信号。
步骤S305，通过开关将校准信号切换回指定一路通道的ADC中，解调汇合后的信号得到每个发射通道和各自校正通道的幅相值。
步骤S306，将上一步骤的幅相值减去对应校正通道的幅相值即可算出每个发射链路幅相差。
步骤S307，将各通道相位差反馈给BBU，通过调节各通道的基带相位权值相位达到每个通道的相位一致。
步骤S308，各通道的幅值差则通过调节TX模块中的数字衰减器来达到每个通道幅度的一致。
步骤S309，每次重新上电或隔固定一段时间需要重复步骤302至步骤S308。
(3)接收通道离线校准流程的步骤包括：
步骤S401，启动离线校准，需要校准的链路为端面B到端面A，即包括调幅调相模块和天线阵列。
步骤S402，将波控模块所有子阵阵子对应的初始相位和幅度参数设置一致，初始相位一般设置成0度，并固定通道的其它参数配置。
步骤S403，测试每个子阵中m*n个阵子的幅相参数。
步骤S404，在子阵挑选一个阵子作为参考，分析其它阵子的相位和幅度差，在波束码本中补偿，保证幅相一致。
步骤S405，其它N-1个通道的离线校准流程重复步骤S403至步骤S404。
(4)接收通道在线校准流程的步骤包括：
步骤S501，启动在线校准，需要校正的链路为端面A到端面C。
步骤S502，接收机指定一路通道中DAC发射含校正序列的中频信号，并经开关切换到校准通道。
步骤S503，在校正通道中，中频信号经过TX模块转换成毫米波信号，并经过开关和多路合分模块分成N路毫米波信号。
步骤S504，经过耦合天线将N路毫米波信号耦合到每路接收通道中，经接收RX模块和ADC转换成数字信号。
步骤S505，解调每个通道收到的数字信号得到每个接收通道和各自校正通道的幅相值。
步骤S506，将上一步骤的幅相值减去对应校正通道的幅相值即可算出每个接收链路幅相差。
步骤S507，将各通道相位差反馈给BBU，通过调节各接收通道的信号相位权值从而达到每个通道的相位一致。
步骤S508，各通道的幅值差则通过调节RX模块中的数字衰减器来达到每个通道幅度的一致。
步骤S509，每次重新上电或隔固定一段时间需要重复步骤S502至步骤S508。
下面以8通道为例，对上述(1)～(4)的校正方法进行举例说明；
图3是根据本公开实施例的8通道数模混合校正系统的结构示意图，结合图3，本申请中的8通道数模混合校正方法包括以下几种方式：
方式1：8通道应用实施例的发射离线校准流程步骤包括：
步骤S601，启动离线校准，需要校准的链路为端面B到端面A，即包括调幅调相模块和天线阵列。
步骤S602，将波控模块发射所有子阵阵子对应的初始相位和幅度参数设置一致，初始相位一般设置成0度，并固定通道的其它参数配置。
步骤S603，测试每个子阵中16*8个阵子的幅相参数。
步骤S604，在子阵挑选一个阵子作为参考，分析其它阵子的相位和幅度差，在波束码本中补偿，保证幅相一致。
步骤S605，其它7个通道的离线校准流程重复S603到S604的步骤。
方式2：8通道应用实施例的发射在线校准流程步骤包括：
步骤S701，启动在线校准，需要校正的链路从端面C到端面A。
步骤S702，发射机的8路通道中DAC同时发射含校正序列的中频信号，并经发射处理模块转换成毫米波信号。
步骤S703，8路毫米波信号经天线耦合到校正通道，经多路合分模块合成一路毫米波信号。
步骤S704，合成后的毫米波信号经校准模块处理转换成中频信号。
步骤S705，通过开关将校准信号切换回指定一路通道的ADC中，解调汇合后的信号得到每个发射通道和各自校正通道的幅相值。
步骤S706，将上一步骤的幅相值减去对应校正通道的幅相值即可算出每个发射链路幅相差。
步骤S707，将8通道相位差反馈给BBU，通过调节各通道的基带相位权值相位达到每个通道的相位一致。
步骤S708，8通道的幅值差则通过调节TX模块中的数字衰减器来达到每个通道幅度的一致。
步骤S709，每次重新上电或隔固定一段时间需要重S702到S708的步骤。
方式3：8通道应用实施例的接收离线校准流程步骤包括：
步骤S801，启动离线校准，需要校准的链路为端面B到端面A，即包括调幅调相模块和天线阵列。
步骤S802，将波控模块接收所有子阵阵子对应的初始相位和幅度参数设置一致，初始相位一般设置成0度，并固定通道的其它参数配置。
步骤S803，测试每个子阵中16*8个阵子的幅相参数。
步骤S804，在子阵挑选一个阵子作为参考，分析其它阵子的相位和幅度差，在波束码本中补偿，保证幅相一致。
步骤S805，其它7个通道的离线校准流程重复S803到S804的步骤。
方式4：8通道应用实施例的接收在线校准流程的步骤包括：
步骤S901，启动在线校准，需要校正的链路为端面A到端面C。
步骤S902，接收机指定一路通道中DAC发射含校正序列的中频信号，并经开关切换到校准通道。
步骤S903，在校正通道中，中频信号经过TX模块转换成毫米波信号，并经过开关和多路合分模块分成8路毫米波信号。
步骤S904，经过耦合天线将8路毫米波信号耦合到每路接收通道中，经接收RX模块和ADC转换成数字信号。
步骤S905，解调每个通道收到的数字信号得到每个接收通道和各自校正通道的幅相值。
步骤S906，将上一步骤的幅相值减去对应校正通道的幅相值即可算出每个接收链路幅相差。
步骤S907，将8通道相位差反馈给BBU，通过调节各接收通道的信号相位权值从而达到每个通道的相位一致。
步骤S908，8通道的幅值差则通过调节RX模块中的数字衰减器来达到每个通道幅度的一致。
步骤S909，每次重新上电或隔固定一段时间需要重复S902到S908的步骤。
图4至图7是在线校准前每次重新上电后不同时延造成通道合成归一化频谱图，由此可见，当时延在1ns、5ns以及10ns时，在640M带宽内两个通道合成
进一步地，在本具体实施方式还提供了一种基于8通道天线在线检测系统实现方法，该方法的步骤包括：
步骤S1001，在整机生产过程中进行阵子耦合系数在线提取。
步骤S1002，打开1通道，该通道128个阵子依次发射信号，耦合阵 子通过空间耦合分别接收每个阵子的功率。
步骤S1003，记录的功率写入离线参数表格中，作为该阵子相对于该通道耦合阵子的耦合系数，该通道将有128个耦合系数。
步骤S1004，重复执行步骤S1002到S1003，将8个通道的每个阵子耦合系数全部提取出来作为离线参数文件写入整机。
步骤S1005，使用中启动天线阵子检测。
步骤S1006，打开1通道，该通道128个阵子在非业务时隙依次发射信号，耦合阵子通过空间耦合分别接收每个阵子的功率。
步骤S1007，通过上一步骤，将8个通道的每个阵子耦合系数全部提取出来。
步骤S1008，将提取的耦合系数与生产时已经写入的离线参数文件做对比，如果差距在4dB以内则认为是正常，反之则异常。
步骤S1009，间隔固定一段时间重复S1005至S1008，连续三次相同阵子出现异常，则上报该阵子异常告警。
此外，对于大规模的天线在线检测，如果每个通道通过单独的耦合阵子进行检测，那么较远的阵子发射出来的功率耦合阵子接收不到或者接收的非常低，这样难以实现所有阵子检测的效果。图8根据本公开的多通道大规模阵列天线分区在线检测方案的示意图，图8中所示分区中的耦合阵子是通过多路合分模块合成一路后通过耦合链路接收信号，基于此，本申请提供了一种多通道天线分区在线检测方法，其中区域的划分以耦合阵子能接收到区域内功率为好，且划分的区域形状包括正方形、圆形等其它形状，该方法的步骤包括：
步骤S1101，在整机生产过程中进行N通道每个阵子(除耦合阵子)耦合系数的提取。
步骤S1102，将每个通道的I*J个阵子划分为i行j列，共i*j个区域。
步骤S1103，打开1通道，该通道所有阵子(除耦合阵子)依次发射 信号，耦合阵子通过空间耦合分别接收每个阵子的功率。
步骤S1104，记录的功率写入离线参数表格中，作为该阵子相对于该区域耦合阵子的耦合系数。
步骤S1105，重复执行S1102至S1104，将N个通道的每个阵子(除耦合阵子)耦合系数全部提取出来作为离线参数文件写入整机。
步骤S1106，使用中启动天线阵子在线检测。
步骤S1107，打开1通道，该通道所有阵子(除耦合阵子)在非业务时隙依次发射信号，耦合阵子通过空间耦合分别接收每个阵子的功率，该功率作为在线检测到的耦合系数。
步骤S1108，通过上一步骤，将N个通道的每个阵子耦合系数全部提取出来。
步骤S1109，将提取的耦合系数与生产时已经写入的离线参数做对比，如果差距在t以内则认为是正常，反之则异常。
步骤S1110，间隔固定一段时间重复执行S1106至S1109，连续三次相同阵子出现异常，则上报该阵子异常告警。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
实施例2
在本实施例中还提供了一种数模混合波束赋形多通道的校正装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。 如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图9是根据本公开实施例的数模混合波束赋形多通道的校正装置的结构框图，如图9所示，该装置包括：第一校正模块92，设置为在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定参考阵子与其他阵子的相位和幅度差，并基于相位和幅度差进行补偿；其中，m和n为正整数；第二校正模块94，设置为在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。
可选地，在多通道为发送通道且为离线状态下，所述第一校正模块包括：第一处理单元，设置为将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；第一测试单元，设置为测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；第一选择单元，设置为从被测试的子阵的阵子中选一个阵子作为参考阵子；第二处理单元，设置为确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿，直到所有发送通道均被校正。
可选地，在多通道为接收通道且为离线状态下，所述第一校正模块包括：第三处理单元，设置为将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；第二测试单元，设置为测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；第二选择单元，设置为从被测试的子阵的阵子中选一个阵子作为参考阵子；第四处理单元，设置为确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿，直到所有接收通道均被校正。
可选地，在所述多通道为发送通道且为在线状态下，所述第二校正模 块包括：第五处理单元，设置为由发射机的N路通道中DAC同时发射含校正序列的中频信号，并经发射处理模块转换成毫米波信号；第六处理单元，设置为每路毫米波信号经天线耦合到校正通道，经多路合分模块合成一路毫米波信号；转换单元，设置为合成后的毫米波信号经校准模块处理转换成中频信号；第七处理单元，设置为通过开关将校准信号切换回指定一路通道的ADC中，解调汇合后的信号得到每个发射通道和各自校正通道的幅相值；第一计算单元，设置为将所述幅相值减去对应校正通道的幅相值可算出每个发射链路幅相差；第八处理单元，设置为将各通道相位差反馈给BBU，通过调节各通道的基带相位权值相位达到每个通道的相位一致；第一解调单元，设置为各通道的幅值差则通过调节TX模块中的数字衰减器来达到每个通道幅度的一致；第一执行单元，设置为每次重新上电或隔固定一段时间触发所述第二校正模块再次执行校正方法。
可选地，在多通道为接收通道且为在线状态下，所述第二校正模块包括：第九处理单元，设置为由接收机指定一路通道中DAC发射含校正序列的中频信号，并经开关切换到校准通道；第十处理单元，设置为在校正通道中，所述中频信号经过TX模块转换成毫米波信号，并经过开关和多路合分模块分成N路毫米波信号；第十一处理单元，设置为经过耦合天线将N路毫米波信号耦合到每路接收通道中，经接收RX模块和ADC转换成数字信号；解调单元，设置为解调每个通道收到的数字信号得到每个接收通道和各自校正通道的幅相值；第二计算单元，设置为将所述幅相值减去对应校正通道的幅相值计算出每个接收链路幅相差；第十二处理单元，设置为将各通道相位差反馈给BBU，通过调节各接收通道的信号相位权值从而达到每个通道的相位一致；第二调节单元，设置为各通道的幅值差则通过调节RX模块中的数字衰减器来达到每个通道幅度的一致；第二执行单元，设置为每次重新上电或隔固定一段时间触发所述第二校正模块再次执行校正方法。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器 中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定参考阵子与其他阵子的相位和幅度差，并基于相位和幅度差进行补偿；其中，m和n为正整数；
S2，在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：
S1，在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个 阵子作为参考阵子；确定参考阵子与其他阵子的相位和幅度差，并基于相位和幅度差进行补偿；其中，m和n为正整数；
S2，在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (13)

  1. 一种数模混合波束赋形多通道的校正方法，包括：
    在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿；其中，m和n为正整数；
    在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定所述每个通道的幅相值与对应校正通道的幅相值之间的幅相差，基于所述幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。
  2. 根据权利要求1所述的方法，其中，在所述多通道为发送通道且为离线状态下，所述校正方法包括：
    将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；
    测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；
    从被测试的子阵的阵子中选一个阵子作为参考阵子；
    确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿，直到所有发送通道均被校正。
  3. 根据权利要求1所述的方法，其中，在所述多通道为接收通道且为离线状态下，所述校正方法包括：
    将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；
    测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；
    从被测试的子阵的阵子中选一个阵子作为参考阵子；
    确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿，直到所有接收通道均被校正。
  4. 根据权利要求1所述的方法，其中，在所述多通道为发送通道且为在线状态下，所述校正方法包括：
    由发射机的N路通道中DAC同时发射含校正序列的中频信号，并经发射处理模块转换成毫米波信号；
    每路毫米波信号经天线耦合到校正通道，经多路合分模块合成一路毫米波信号；
    合成后的毫米波信号经校准模块处理转换成中频信号；
    通过开关将校准信号切换回指定一路通道的ADC中，解调汇合后的信号得到每个发射通道和各自校正通道的幅相值；
    将所述幅相值减去对应校正通道的幅相值可算出每个发射链路幅相差；
    将各通道相位差反馈给BBU，通过调节各通道的基带相位权值相位达到每个通道的相位一致；
    各通道的幅值差则通过调节TX模块中的数字衰减器来达到每个通道幅度的一致；
    其中，在每次重新上电或隔固定一段时间后重复执行所述校正方法的步骤。
  5. 根据权利要求1所述的方法，其中，在所述多通道为接收通道且为在线状态下，所述校正方法包括：
    由接收机指定一路通道中DAC发射含校正序列的中频信号，并经开关切换到校准通道；
    在校正通道中，所述中频信号经过TX模块转换成毫米波信号，并经过开关和多路合分模块分成N路毫米波信号；
    经过耦合天线将N路毫米波信号耦合到每路接收通道中，经接收RX模块和ADC转换成数字信号；
    解调每个通道收到的数字信号得到每个接收通道和各自校正通道的幅相值；
    将所述幅相值减去对应校正通道的幅相值计算出每个接收链路幅相差；
    将各通道相位差反馈给BBU，通过调节各接收通道的信号相位权值从而达到每个通道的相位一致；
    各通道的幅值差则通过调节RX模块中的数字衰减器来达到每个通道幅度的一致；
    其中，每次重新上电或隔固定一段时间后重复所述校正方法的步骤。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：
    获取每一个通道的耦合系数；
    每隔固定时间比较当前获取到的耦合系数与之前获取的耦合系数。
  7. 一种数模混合波束赋形多通道的校正装置，包括：
    第一校正模块，设置为在多通道为离线状态下，执行下述校正方法：测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；从被测试的子阵的阵子中选一个阵子作为参考阵子；确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿；其中，m和n为正整数；
    第二校正模块，设置为在多通道为在线状态下，执行下述校正方法：获取每个通道的幅相值和各自校正通道的幅相值，确定所述每个 通道的幅相值与对应校正通道的幅相值之间的幅相差，基于所述幅相差调节各个通道的相位权值以使每个通道的相位和幅度一致。
  8. 根据权利要求7所述的装置，其中，在所述多通道为发送通道且为离线状态下，所述第一校正模块包括：
    第一处理单元，设置为将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；
    第一测试单元，设置为测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；
    第一选择单元，设置为从被测试的子阵的阵子中选一个阵子作为参考阵子；
    第二处理单元，设置为确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿，直到所有发送通道均被校正。
  9. 根据权利要求7所述的装置，其中，在所述多通道为接收通道且为离线状态下，所述第一校正模块包括：
    第三处理单元，设置为将发射机所有子阵中的阵子对应的初始相位和幅度参数设置一致并固定通道的其它参数配置；
    第二测试单元，设置为测试与每一个通道对应的子阵中的m*n个阵子的幅相参数；
    第二选择单元，设置为从被测试的子阵的阵子中选一个阵子作为参考阵子；
    第四处理单元，设置为确定所述参考阵子与其他阵子的相位和幅度差，并基于所述相位和幅度差进行补偿，直到所有接收通道均被校 正。
  10. 根据权利要求7所述的装置，其中，在所述多通道为发送通道且为在线状态下，所述第二校正模块包括：
    第五处理单元，设置为由发射机的N路通道中DAC同时发射含校正序列的中频信号，并经发射处理模块转换成毫米波信号；
    第六处理单元，设置为每路毫米波信号经天线耦合到校正通道，经多路合分模块合成一路毫米波信号；
    转换单元，设置为合成后的毫米波信号经校准模块处理转换成中频信号；
    第七处理单元，设置为通过开关将校准信号切换回指定一路通道的ADC中，解调汇合后的信号得到每个发射通道和各自校正通道的幅相值；
    第一计算单元，设置为将所述幅相值减去对应校正通道的幅相值可算出每个发射链路幅相差；
    第八处理单元，设置为将各通道相位差反馈给BBU，通过调节各通道的基带相位权值相位达到每个通道的相位一致；
    第一解调单元，设置为各通道的幅值差则通过调节TX模块中的数字衰减器来达到每个通道幅度的一致；
    第一执行单元，设置为每次重新上电或隔固定一段时间触发所述第二校正模块再次执行校正方法。
  11. 根据权利要求7所述的装置，其中，在所述多通道为接收通道且为在线状态下，所述第二校正模块包括：
    第九处理单元，设置为由接收机指定一路通道中DAC发射含校 正序列的中频信号，并经开关切换到校准通道；
    第十处理单元，设置为在校正通道中，所述中频信号经过TX模块转换成毫米波信号，并经过开关和多路合分模块分成N路毫米波信号；
    第十一处理单元，设置为经过耦合天线将N路毫米波信号耦合到每路接收通道中，经接收RX模块和ADC转换成数字信号；
    解调单元，设置为解调每个通道收到的数字信号得到每个接收通道和各自校正通道的幅相值；
    第二计算单元，设置为将所述幅相值减去对应校正通道的幅相值计算出每个接收链路幅相差；
    第十二处理单元，设置为将各通道相位差反馈给BBU，通过调节各接收通道的信号相位权值从而达到每个通道的相位一致；
    第二调节单元，设置为各通道的幅值差则通过调节RX模块中的数字衰减器来达到每个通道幅度的一致；
    第二执行单元，设置为每次重新上电或隔固定一段时间触发所述第二校正模块再次执行校正方法。
  12. 一种计算机可读的存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至6任一项中所述的方法。
  13. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至6任一项中所述的方法。
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