CN108512612B - Transmitting and receiving calibration device, system and method - Google Patents
Transmitting and receiving calibration device, system and method Download PDFInfo
- Publication number
- CN108512612B CN108512612B CN201710112332.2A CN201710112332A CN108512612B CN 108512612 B CN108512612 B CN 108512612B CN 201710112332 A CN201710112332 A CN 201710112332A CN 108512612 B CN108512612 B CN 108512612B
- Authority
- CN
- China
- Prior art keywords
- receiving
- digital
- transmitting
- analog
- channel
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The invention provides a transmitting calibration device, which comprises: the digital processing master control module is used for generating a transmitting calibration signal, processing a feedback signal, generating a configuration value and generating a control signal; the orthogonal modulation correction module is used for receiving the control signal and performing orthogonal modulation unbalance correction; the digital transmitting channel attenuator is used for receiving the control signal and carrying out integral transmitting gain control on all analog transmitting channels controlled by the digital transmitting channel attenuator; the analog transmitting gain phase adjuster is used for receiving the control signal and adjusting the amplitude and the phase of a single analog transmitting channel; the radio frequency coupling network is used for coupling the emission calibration signal into a feedback signal and feeding the feedback signal back to the digital master control module.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a transmit and receive calibration apparatus, system, and method.
Background
The common wireless communication system has few radio frequency channels, serial processing is adopted to carry out channel-by-channel calibration, compensation is carried out by adopting a first-stage numerical control attenuator to carry out power correction, and the correction of the amplitude and phase imbalance degree of the zero intermediate frequency architecture quadrature modulation transmitter is only carried out in a factory state, and dynamic quadrature modulation correction is not supported.
The conventional radio frequency calibration method cannot adapt to the rapid calibration of the radio frequency channel of the large-scale phased array antenna, and the communication service is generally interrupted in the calibration process; the gain and phase compensation values cannot be timely corrected by triggering according to the change of the environment such as temperature and the like. In addition, for a digital analog cascade multi-beam forming system, the traditional method only carries out analog compensation, and the hierarchical compensation of a digital analog amplitude phase regulator needs to be considered actually.
Disclosure of Invention
In order to solve the problems of the background art, the present invention provides a transmission calibration apparatus, including:
the digital transmission system comprises a digital processing master control module, N orthogonal modulation correction modules, N digital transmission channel attenuators, M multiplied by N analog transmission gain phase regulators, M multiplied by N transmission antenna ports and a radio frequency coupling network, wherein N is the total number of transmission channels, each transmission channel consists of a digital transmission channel and a plurality of analog transmission channels controlled by the digital transmission channel, and M is the total number of analog transmission channels controlled by each digital transmission channel;
the digital processing master control module is used for generating a transmitting calibration signal and transmitting the transmitting calibration signal to the N orthogonal modulation correction modules, processing a feedback signal transmitted by the radio frequency coupling network through a feedback radio frequency channel, generating a configuration value and generating a corresponding control signal, wherein the configuration value comprises an orthogonal modulation correction value, a digital transmitting channel amplitude attenuation value, an amplitude attenuation value of an analog transmitting channel and a phase configuration value;
the orthogonal modulation correction module is used for receiving the emission calibration signal sent by the digital processing master control module, receiving a control signal of an orthogonal modulation correction value of the digital processing master control module, carrying out orthogonal modulation unbalance correction, and sending the emission calibration signal to a corresponding digital emission channel attenuator;
the digital transmitting channel attenuator is used for receiving the transmitting calibration signal sent by the quadrature modulation correction module, receiving the control signal of the digital transmitting channel amplitude attenuation value of the digital processing master control module, carrying out integral transmitting gain control on all analog transmitting channels controlled by the digital processing master control module, and sending the transmitting calibration signal to the corresponding M analog transmitting gain phase regulators;
the analog transmitting gain phase adjuster is used for receiving the transmitting calibration signal sent by the digital transmitting channel attenuator, receiving the control signal of the amplitude attenuation value and the phase configuration value of the analog transmitting channel of the digital processing master control module, adjusting the amplitude and the phase of the single analog transmitting channel and sending the transmitting calibration signal to the corresponding transmitting antenna port;
the radio frequency coupling network is used for coupling the transmitting calibration signals of all the transmitting antenna ports into a feedback signal and feeding the feedback signal back to the digital master control module.
The invention also proposes a receiving calibration device, comprising:
the digital receiving system comprises a digital processing master control module, N digital receiving channel attenuators, M multiplied by N analog receiving gain phase regulators, M multiplied by N receiving antenna ports and a radio frequency coupling network, wherein N is the total number of receiving channels, each receiving channel consists of a digital receiving channel and a plurality of analog receiving channels controlled by the digital receiving channel, and M is the total number of analog receiving channels controlled by each digital receiving channel;
the digital processing master control module is used for generating an excitation source for receiving calibration signals and directly sending the excitation source to the radio frequency coupling network, processing the receiving calibration signals sent by all the digital receiving channel attenuators, generating configuration values and generating corresponding control signals, wherein the configuration values comprise digital receiving channel amplitude attenuation values, amplitude attenuation values of analog receiving channels and phase configuration values;
the radio frequency coupling network is used for directly receiving a receiving calibration signal excitation source sent by the digital processing master control module and coupling the receiving calibration signal to each receiving antenna port;
the analog receiving gain phase adjuster is used for receiving a receiving calibration signal sent by a corresponding receiving antenna port, receiving a control signal of an amplitude attenuation value and a phase configuration value of an analog receiving channel of the digital processing master control module, adjusting the amplitude and the phase of a single analog receiving channel, and sending the receiving calibration signal to a corresponding digital receiving channel attenuator;
the digital receiving channel attenuator is used for receiving all the receiving calibration signals sent by the corresponding analog receiving gain phase regulators, receiving the control signals of the digital receiving channel amplitude attenuation values of the digital processing master control module, carrying out integral receiving gain control on all the receiving transmitting channels controlled by the digital processing master control module, and sending the receiving calibration signals to the digital processing master control module.
The invention also provides a calibration system, which comprises the transmitting calibration device and the receiving calibration device. Preferably, the digital processing master control module of the transmitting calibration device and the digital processing master control module of the receiving calibration device can adopt the same physical entity; the radio frequency coupling network of the transmitting calibration device and the radio frequency coupling network of the receiving calibration device can adopt the same physical entity; the transmitting antenna port of the transmitting calibration device and the receiving antenna port of the receiving calibration device can adopt the same physical entity; the excitation source of the receiving calibration signal of the receiving calibration device can be directly transmitted to the radio frequency coupling network through the feedback radio frequency channel.
The invention also provides a transmission calibration method for the transmission calibration device, which comprises the following steps: firstly, the quadrature modulation imbalance correction of the digital transmitting channels is carried out through a quadrature modulation correction module, then the amplitude and the phase of a single analog transmitting channel are regulated through an analog transmitting gain phase regulator, and the integral transmitting gain control is carried out on all analog transmitting channels controlled by each digital transmitting channel through a digital transmitting channel attenuator. Further preferably, when transmitting the service signal, phase consistency compensation can be performed on each digital transmission channel in the digital baseband.
The emission calibration method may specifically include the following steps:
1, a digital processing master control module sends N paths of single audio signals with different frequency points to N digital transmitting channels in parallel, and a coupling network feeds back a transmitting antenna port signal to the digital processing master control module;
2, the digital processing master control module calculates the amplitude and phase unbalance parameters of the N digital transmitting channels to generate orthogonal modulation correction values, including the gain and phase correction values and the direct current offset values of the I path and the Q path;
3, the digital processing master control module sends the quadrature modulation correction value to the quadrature modulation correction module through the control signal to carry out quadrature modulation unbalance correction;
4, the digital processing master control module serially sends broadband OFDM signals to the MXN analog transmitting channels, and the coupling network feeds back the port signals of the transmitting antennas to the digital processing master control module;
5, the digital processing master control module calculates errors of power and phase of all the MXN analog transmitting channels and a target value to generate an amplitude attenuation value and a phase configuration value of the analog transmitting channels, then divides the calculation result into N groups according to the digital transmitting channels, respectively calculates a mean power error compensation value of each group, and generates an amplitude attenuation value of the digital transmitting channels;
the digital processing master control module sends corresponding configuration values to the digital transmitting channel attenuators and the analog transmitting gain phase regulators through control signals, the digital transmitting channel attenuators perform overall transmitting gain control on all analog transmitting channels controlled by each digital transmitting channel, and the analog transmitting gain phase regulators perform amplitude and phase regulation on single analog transmitting channels;
and 7, after entering a normal service transmitting flow, the digital processing master control module compensates the common phase error for the N digital transmitting channels by multiplying the digital forming weight by the weight corresponding to the error phase in the digital baseband.
The present invention further provides a receiving calibration method for the receiving calibration apparatus, including: amplitude and phase adjustment of a single analog receiving channel are carried out through an analog receiving gain phase adjuster, and overall receiving gain control is carried out on all analog transmitting channels controlled by each digital transmitting channel through a digital receiving channel attenuator. Further preferably, when receiving the service signal, phase consistency compensation is performed on each digital receiving channel in the digital baseband.
Preferably, the reception calibration method may include the steps of:
1, a digital processing master control module generates broadband OFDM signals for receiving calibration and directly sends the broadband OFDM signals to a coupling network;
all receiving antenna ports are divided into N groups according to digital transmitting channels, a coupling network selects one receiving antenna port from each group of receiving antenna ports, broadband OFDM signals are simultaneously coupled to the selected N antenna feed source ports, the N receiving channels are processed in parallel, a digital processing master control module receives receiving calibration signals sent by attenuators of all digital receiving channels, and errors of power and phase of analog receiving channels corresponding to all receiving antenna ports and target values are calculated;
repeating the above process for M times to calculate the errors of the power and phase of all the MxN analog receiving channels and the target value, generating the amplitude attenuation value and the phase configuration value of the analog receiving channels, dividing the calculation result into N groups according to the digital receiving channels, respectively calculating the mean power error compensation value of each group, and generating the amplitude attenuation value of the digital receiving channels;
4, the digital processing master control module sends corresponding configuration values to the digital receiving channel attenuators and the analog receiving gain phase regulators through control signals, the digital receiving channel attenuators perform overall receiving gain control on all analog receiving channels controlled by each digital receiving channel, and the analog receiving gain phase regulators perform amplitude and phase regulation on single analog receiving channels;
and 5, after entering a normal service receiving flow, the digital processing master control module compensates the common phase error for the N digital receiving channels by multiplying the digital forming weight by the weight corresponding to the error phase in the digital baseband.
Preferably, in the transmitting and calibrating method, the transceiving calibration signal only occupies part of the time slot of the physical frame, and the receiving end performs the zero setting operation on the sampling digital signal on the occupied time slot, which is equivalent to the punching, so that the influence on the normal communication service of the phased array system can be reduced as much as possible, and the interruption of the normal communication service can not be caused.
The invention can realize the amplitude and phase calibration of the radio frequency transceiving channel of the large-scale phased array antenna, ensure the maximization of the beamforming gain, and has the advantages that: 1, adopting self-adaptive calibration, namely triggering a real-time and rapid calibration process according to external environment change so as to dynamically compensate the change of radio frequency amplitude and phase characteristics; 2, the receiving and sending calibration signals only occupy a short part of time slots of a communication physical frame in the calibration process, so that the non-interruption of normal service receiving and sending can be ensured; considering the step compensation of the digital-to-analog amplitude-phase regulator, a single digital channel of the receiving-transmitting channel corresponds to a group of analog channels, the small amplitude-phase inconsistency in the group can be corrected through the gain-phase regulator in the calibration process, the large-range amplitude inconsistency among the groups can be corrected through the digital channel attenuator, and the large-range phase consistency among the channel groups can be compensated through the digital baseband weight multiplier; and 4, the same physical frame time can process the calibration process of the multiple channels in parallel, so that the time for calibrating the large-scale channels is greatly shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a block diagram of a transmission calibration apparatus according to embodiment 1 of the present invention;
fig. 2 is a block diagram of a reception calibration apparatus according to embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
This embodiment will explain the implementation of the emission calibration in detail. The structure of the emission calibration device of the present invention is shown in fig. 1, and includes: the digital transmission system comprises a digital processing total control module, N quadrature modulation correction modules (QMC), N digital transmission channel attenuators, M multiplied by N analog transmission gain phase adjusters, M multiplied by N transmission antenna ports and a radio frequency coupling network, wherein N is the total number of transmission channels, each transmission channel consists of a digital transmission channel and a plurality of analog transmission channels controlled by the digital transmission channel, and M is the total number of analog transmission channels controlled by each digital transmission channel.
The digital processing master control module is used for generating a transmitting calibration signal and transmitting the transmitting calibration signal to the N orthogonal modulation correction modules, processing a feedback signal transmitted by the radio frequency coupling network through a feedback radio frequency channel, generating a configuration value and generating a corresponding control signal, wherein the configuration value comprises an orthogonal modulation correction value, a digital transmitting channel amplitude attenuation value, an amplitude attenuation value of an analog transmitting channel and a phase configuration value.
The orthogonal modulation correction module is used for receiving the emission calibration signal sent by the digital processing master control module, receiving the control signal of the orthogonal modulation correction value of the digital processing master control module, carrying out orthogonal modulation unbalance correction, and sending the emission calibration signal to the corresponding digital emission channel attenuator.
The digital transmitting channel attenuator is used for receiving the transmitting calibration signal sent by the quadrature modulation correction module, receiving the control signal of the digital transmitting channel amplitude attenuation value of the digital processing master control module, carrying out integral transmitting gain control on all analog transmitting channels controlled by the digital processing master control module, and sending the transmitting calibration signal to the corresponding M analog transmitting gain phase regulators.
The analog transmitting gain phase adjuster is used for receiving the transmitting calibration signal sent by the digital transmitting channel attenuator, receiving the control signal of the amplitude attenuation value and the phase configuration value of the analog transmitting channel of the digital processing master control module, adjusting the amplitude and the phase of the single analog transmitting channel, and sending the transmitting calibration signal to the corresponding transmitting antenna port.
The radio frequency coupling network is used for coupling the transmitting calibration signals of all the transmitting antenna ports into a feedback signal and feeding the feedback signal back to the digital master control module.
In the transmission calibration process of this embodiment, the quadrature modulation imbalance of the digital channel is first corrected, and then the amplitude-phase inconsistency of the transmission channel is calibrated. The method specifically comprises the following steps:
1, a digital processing master control module sends N paths of single audio signals with different frequency points to N digital transmitting channels in parallel, the N digital transmitting channels are excited in parallel, and a coupling network feeds back a transmitting antenna port signal to the digital processing master control module;
2, the digital processing master control module calculates the amplitude and phase unbalance parameters of the N digital transmitting channels to generate orthogonal modulation correction values, including the gain and phase correction values and the direct current offset values of the I path and the Q path;
3, the digital processing master control module sends the quadrature modulation correction value to the quadrature modulation correction module through the control signal to carry out quadrature modulation unbalance correction;
4, the digital processing master control module sends broadband OFDM (orthogonal frequency division multiplexing) signals to the MXN analog transmitting channels in series, the MXN analog transmitting channels are excited one by one, and the coupling network feeds back the transmitting antenna port signals to the digital processing master control module;
5, the digital processing master control module calculates the errors of the power and the phase of all the MXN analog transmitting channels and the target value to generate the amplitude attenuation value and the phase configuration value of the analog transmitting channels, then divides the calculation result into N groups according to the digital transmitting channels, respectively calculates the mean (public) power error compensation value of each group to generate the amplitude attenuation value of the digital transmitting channels;
the digital processing master control module sends corresponding configuration values to the digital transmitting channel attenuator and the analog transmitting gain phase adjuster according to strict time sequence through control signals, the digital transmitting channel attenuator performs integral transmitting gain control on all analog transmitting channels controlled by each digital transmitting channel, and the analog transmitting gain phase adjuster performs amplitude and phase adjustment on a single analog transmitting channel;
and 7, after entering a normal service transmitting flow, the digital processing master control module compensates the common phase error for the N digital transmitting channels by multiplying the digital forming weight by the weight corresponding to the error phase in the digital baseband.
Example 2
The embodiment will explain the specific implementation process of the receive calibration in detail. The structure of the receiving calibration device of the present invention is shown in fig. 2, and includes:
the digital receiving system comprises a digital processing master control module, N digital receiving channel attenuators, M multiplied by N analog receiving gain phase regulators, M multiplied by N receiving antenna ports and a radio frequency coupling network, wherein N is the total number of receiving channels, each receiving channel consists of a digital receiving channel and a plurality of analog receiving channels controlled by the digital receiving channel, and M is the total number of analog receiving channels controlled by each digital receiving channel.
The digital processing master control module is used for generating an excitation source for receiving calibration signals and directly sending the excitation source to the radio frequency coupling network, processing the receiving calibration signals sent by all the digital receiving channel attenuators, generating configuration values and generating corresponding control signals, wherein the configuration values comprise digital receiving channel amplitude attenuation values, amplitude attenuation values of analog receiving channels and phase configuration values.
The radio frequency coupling network is used for directly receiving a receiving calibration signal excitation source sent by the digital processing master control module and coupling the receiving calibration signal to each receiving antenna port.
The analog receiving gain phase adjuster is used for receiving a receiving calibration signal sent by a corresponding receiving antenna port, receiving a control signal of an amplitude attenuation value and a phase configuration value of an analog receiving channel of the digital processing master control module, adjusting the amplitude and the phase of a single analog receiving channel, and sending the receiving calibration signal to a corresponding digital receiving channel attenuator.
The digital receiving channel attenuator is used for receiving all the receiving calibration signals sent by the corresponding analog receiving gain phase regulators, receiving the control signals of the digital receiving channel amplitude attenuation values of the digital processing master control module, carrying out integral receiving gain control on all the receiving transmitting channels controlled by the digital processing master control module, and sending the receiving calibration signals to the digital processing master control module.
The digital processing master control module, the radio frequency coupling network and the receiving antenna port of the receiving calibration device in this embodiment may be respectively multiplexed with the digital processing master control module, the radio frequency coupling network and the transmitting antenna port of the transmitting calibration device in embodiment 1 by the same physical entity.
The receiving calibration process of this embodiment is similar to the transmitting calibration process of embodiment 1, except that there is no quadrature modulation calibration process, and after the receiving calibration signal is shunted to each receiving antenna port through the rf coupling network, the digital processing total control module processes the receiving calibration signal sent by all the receiving channels, generates a digital channel amplitude attenuation value, an analog amplitude attenuation value, and a phase configuration value, and generates a control signal of corresponding configuration. The specific embodiment comprises the following steps:
10.1, the digital processing master control module generates broadband OFDM signals for receiving calibration, and the broadband OFDM signals can be directly sent to a coupling network through a feedback radio frequency channel;
10.2, dividing all receiving antenna ports into N groups according to digital transmitting channels, selecting one receiving antenna port from each group of receiving antenna ports by a coupling network, simultaneously coupling broadband OFDM signals to the selected N antenna feed source ports, carrying out parallel processing on the N receiving channels, receiving calibration signals sent by attenuators of all digital receiving channels by a digital processing master control module, and calculating the errors of the power and the phase of a simulated receiving channel corresponding to each receiving antenna port and a target value;
10.3, repeating the above process for M times, namely calculating the errors of the power and phase of all the MxN analog receiving channels and the target value, generating the amplitude attenuation value and the phase configuration value of the analog receiving channels, dividing the calculation result into N groups according to the digital receiving channels, respectively calculating the mean (common) power error compensation value of each group, and generating the amplitude attenuation value of the digital receiving channels;
10.4, the digital processing master control module sends corresponding configuration values to the digital receiving channel attenuators and the analog receiving gain phase regulators through control signals, the digital receiving channel attenuators perform integral receiving gain control on all analog receiving channels controlled by each digital receiving channel, and the analog receiving gain phase regulators perform amplitude and phase regulation on single analog receiving channels;
and 10.5, after entering a normal service receiving flow, the digital processing master control module compensates the common phase error for the N digital receiving channels by multiplying the digital forming weight by the weight corresponding to the error phase in the digital baseband.
Through practical tests, the following criteria can be achieved with the transmitting and receiving calibration devices of examples 1 and 2: after the calibration is finished, the error between the gain of the radio frequency channel to be transmitted and received and the target gain is less than +/-1 dB, and the error between the phase of the radio frequency to be transmitted and received and the target phase of the channel is less than +/-5 degrees; the time required by the calibration process is less than 2s, and the control and signals of the calibration process do not cause obvious influence on normal communication service; through quadrature modulation unbalance correction, direct current and image rejection which need to be considered by transmitting the zero intermediate frequency scheme quadrature modulation are better than 40 dB.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A launch calibration apparatus, characterized in that the apparatus comprises:
the digital transmission system comprises a digital processing master control module, N orthogonal modulation correction modules, N digital transmission channel attenuators, M multiplied by N analog transmission gain phase regulators, M multiplied by N transmission antenna ports and a radio frequency coupling network, wherein N is the total number of transmission channels, each transmission channel consists of a digital transmission channel and a plurality of analog transmission channels controlled by the digital transmission channel, and M is the total number of analog transmission channels controlled by each digital transmission channel;
the digital processing master control module is used for generating a transmitting calibration signal and transmitting the transmitting calibration signal to the N orthogonal modulation correction modules, processing a feedback signal transmitted by the radio frequency coupling network through a feedback radio frequency channel, generating a configuration value and generating a corresponding control signal, wherein the configuration value comprises an orthogonal modulation correction value, a digital transmitting channel amplitude attenuation value, an amplitude attenuation value of an analog transmitting channel and a phase configuration value;
the orthogonal modulation correction module is used for receiving the emission calibration signal sent by the digital processing master control module, receiving a control signal of an orthogonal modulation correction value of the digital processing master control module, carrying out orthogonal modulation unbalance correction, and sending the emission calibration signal to a corresponding digital emission channel attenuator;
the digital transmitting channel attenuator is used for receiving the transmitting calibration signal sent by the quadrature modulation correction module, receiving the control signal of the digital transmitting channel amplitude attenuation value of the digital processing master control module, carrying out integral transmitting gain control on all analog transmitting channels controlled by the digital processing master control module, and sending the transmitting calibration signal to the corresponding M analog transmitting gain phase regulators;
the analog transmitting gain phase adjuster is used for receiving the transmitting calibration signal sent by the digital transmitting channel attenuator, receiving the control signal of the amplitude attenuation value and the phase configuration value of the analog transmitting channel of the digital processing master control module, adjusting the amplitude and the phase of the single analog transmitting channel and sending the transmitting calibration signal to the corresponding transmitting antenna port;
the radio frequency coupling network is used for coupling the transmitting calibration signals of all the transmitting antenna ports into a feedback signal and feeding the feedback signal back to the digital master control module.
2. A receive calibration apparatus, the apparatus comprising:
the digital receiving system comprises a digital processing master control module, N digital receiving channel attenuators, M multiplied by N analog receiving gain phase regulators, M multiplied by N receiving antenna ports and a radio frequency coupling network, wherein N is the total number of receiving channels, each receiving channel consists of a digital receiving channel and a plurality of analog receiving channels controlled by the digital receiving channel, and M is the total number of analog receiving channels controlled by each digital receiving channel;
the digital processing master control module is used for generating an excitation source for receiving calibration signals and directly sending the excitation source to the radio frequency coupling network, processing the receiving calibration signals sent by all the digital receiving channel attenuators, generating configuration values and generating corresponding control signals, wherein the configuration values comprise digital receiving channel amplitude attenuation values, amplitude attenuation values of analog receiving channels and phase configuration values;
the radio frequency coupling network is used for directly receiving a receiving calibration signal excitation source sent by the digital processing master control module and coupling the receiving calibration signal to each receiving antenna port;
the analog receiving gain phase adjuster is used for receiving a receiving calibration signal sent by a corresponding receiving antenna port, receiving a control signal of an amplitude attenuation value and a phase configuration value of an analog receiving channel of the digital processing master control module, adjusting the amplitude and the phase of a single analog receiving channel, and sending the receiving calibration signal to a corresponding digital receiving channel attenuator;
the digital receiving channel attenuator is used for receiving all the receiving calibration signals sent by the corresponding analog receiving gain phase regulators, receiving the control signals of the digital receiving channel amplitude attenuation values of the digital processing master control module, carrying out integral receiving gain control on all the receiving transmitting channels controlled by the digital processing master control module, and sending the receiving calibration signals to the digital processing master control module.
3. A calibration system, characterized by:
the system comprises the transmit calibration apparatus of claim 1 and the receive calibration apparatus of claim 2.
4. The system of claim 3, wherein:
the digital processing general control module of claim 1 and the digital processing general control module of claim 2 are the same physical entity; the rf coupling network of claim 1 and the rf coupling network of claim 2 are implemented as the same physical entity; the transmit antenna port of claim 1 and the receive antenna port of claim 2 are in the same physical entity; the excitation source for receiving calibration signals as claimed in claim 2 is sent directly to the rf coupling network via the feedback rf channel as claimed in claim 1.
5. A method of transmit calibration for use with the apparatus of claim 1, the method comprising:
the quadrature modulation imbalance correction of the digital transmitting channels is carried out through the quadrature modulation correction module, the integral transmitting gain control is carried out on all analog transmitting channels controlled by each digital transmitting channel through the digital transmitting channel attenuator, and the amplitude and the phase of a single analog transmitting channel are adjusted through the analog transmitting gain phase adjuster.
6. The method of claim 5, further comprising:
when transmitting service signals, phase consistency compensation is carried out on each digital transmitting channel in the digital baseband.
7. The method according to claim 6, characterized in that it comprises the steps of:
7.1, the digital processing master control module sends N paths of single audio signals with different frequency points to N digital transmitting channels in parallel, and the coupling network feeds back the port signals of the transmitting antenna to the digital processing master control module;
7.2, the digital processing master control module calculates the amplitude and phase unbalance parameters of the N digital transmitting channels to generate orthogonal modulation correction values, wherein the orthogonal modulation correction values comprise gain and phase correction values and direct current offset values of the path I and the path Q;
7.3, the digital processing master control module sends the quadrature modulation correction value to the quadrature modulation correction module through the control signal to carry out quadrature modulation unbalance correction;
7.4, the digital processing master control module serially sends broadband OFDM signals to the MXN analog transmitting channels, and the coupling network feeds back the port signals of the transmitting antenna to the digital processing master control module;
7.5, the digital processing master control module calculates the errors of the power and the phase of all the MXN analog transmitting channels and the target value to generate the amplitude attenuation value and the phase configuration value of the analog transmitting channels, then divides the calculation result into N groups according to the digital transmitting channels, respectively calculates the mean power error compensation value of each group, and generates the amplitude attenuation value of the digital transmitting channels;
7.6, the digital processing master control module sends the corresponding configuration values to the digital transmitting channel attenuator and the analog transmitting gain phase adjuster through the control signals, the digital transmitting channel attenuator performs integral transmitting gain control on all the analog transmitting channels controlled by each digital transmitting channel, and the analog transmitting gain phase adjuster performs amplitude and phase adjustment on a single analog transmitting channel;
7.7, after entering the normal service transmitting flow, the digital processing master control module compensates the public phase error for the N digital transmitting channels by multiplying the digital forming weight by the weight corresponding to the error phase in the digital baseband.
8. A receive calibration method for the apparatus of claim 2, the method comprising:
amplitude and phase adjustment of a single analog receiving channel are carried out through an analog receiving gain phase adjuster, and overall receiving gain control is carried out on all analog transmitting channels controlled by each digital transmitting channel through a digital receiving channel attenuator.
9. The method of claim 8, further comprising:
and when receiving the service signal, carrying out phase consistency compensation on each digital receiving channel in the digital baseband.
10. Method according to claim 9, characterized in that it comprises the following steps:
10.1, the digital processing master control module generates broadband OFDM signals for receiving calibration and directly sends the broadband OFDM signals to a coupling network;
10.2, dividing all receiving antenna ports into N groups according to digital transmitting channels, selecting one receiving antenna port from each group of receiving antenna ports by a coupling network, simultaneously coupling broadband OFDM signals to the selected N antenna feed source ports, carrying out parallel processing on the N receiving channels, receiving calibration signals sent by attenuators of all digital receiving channels by a digital processing master control module, and calculating the errors of the power and the phase of a simulated receiving channel corresponding to each receiving antenna port and a target value;
10.3, repeating the above process for M times, calculating the errors of the power and phase of all the MxN analog receiving channels and the target value, generating the amplitude attenuation value and the phase configuration value of the analog receiving channels, dividing the calculation result into N groups according to the digital receiving channels, respectively calculating the mean power error compensation value of each group, and generating the amplitude attenuation value of the digital receiving channels;
10.4, the digital processing master control module sends corresponding configuration values to the digital receiving channel attenuators and the analog receiving gain phase regulators through control signals, the digital receiving channel attenuators perform integral receiving gain control on all analog receiving channels controlled by each digital receiving channel, and the analog receiving gain phase regulators perform amplitude and phase regulation on single analog receiving channels;
and 10.5, after entering a normal service receiving flow, the digital processing master control module compensates the common phase error for the N digital receiving channels by multiplying the digital forming weight by the weight corresponding to the error phase in the digital baseband.
11. The method according to any one of claims 5 to 10, further comprising:
the receiving and transmitting calibration signals only occupy partial time slots of the physical frame, and the receiving end carries out zero setting operation on the sampling digital signals occupying the time slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112332.2A CN108512612B (en) | 2017-02-28 | 2017-02-28 | Transmitting and receiving calibration device, system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710112332.2A CN108512612B (en) | 2017-02-28 | 2017-02-28 | Transmitting and receiving calibration device, system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108512612A CN108512612A (en) | 2018-09-07 |
| CN108512612B true CN108512612B (en) | 2021-06-29 |
Family
ID=63374091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710112332.2A Active CN108512612B (en) | 2017-02-28 | 2017-02-28 | Transmitting and receiving calibration device, system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108512612B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743094B (en) * | 2018-12-04 | 2021-05-28 | 京信通信系统（中国）有限公司 | Digital repeater gain control method, device, digital repeater and storage medium |
| CN110346756B (en) * | 2019-07-10 | 2023-06-06 | 四川中电昆辰科技有限公司 | Signal envelope detection device and method and arrival time correction method thereof |
| CN110471013B (en) * | 2019-08-23 | 2022-01-11 | 武汉中科牛津波谱技术有限公司 | Transmitting power linearity calibration system and method of nuclear magnetic resonance instrument |
| CN113395047A (en) * | 2020-03-13 | 2021-09-14 | 瑞昱半导体股份有限公司 | Calibration system, radio frequency system and output power linearization method thereof |
| CN112003654B (en) * | 2020-08-25 | 2021-07-30 | 成都天锐星通科技有限公司 | Phased array antenna self-calibration method and device and phased array antenna |
| CN112291173B (en) * | 2020-10-21 | 2024-05-14 | 锐迪科创微电子（北京）有限公司 | IQ imbalance coefficient acquisition method and device and readable storage medium |
| CN113644990B (en) * | 2021-08-16 | 2024-01-16 | 恒玄科技(上海)股份有限公司 | Calibration method and device for wireless transmitting signals and wireless signal transmitting system |
| CN115097497B (en) * | 2022-06-21 | 2023-04-18 | 成都美数科技有限公司 | Amplitude and phase correction method and system of multi-channel receiver |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335966A (en) * | 2008-06-30 | 2008-12-31 | 华为技术有限公司 | Multi-antenna correcting method, multi-antenna transceiving device and base station system |
| CN102413082A (en) * | 2011-07-29 | 2012-04-11 | 西安空间无线电技术研究所 | Calibration method and calibration system for amplitude phase error of satellite-borne DBF (Digit Beam Forming) transmitting channel |
| CN102426300A (en) * | 2011-08-31 | 2012-04-25 | 西安空间无线电技术研究所 | Calibration system of amplitude and phase errors of satellite-borne wave beam formation reception channels and method thereof |
| WO2013123753A1 (en) * | 2012-02-21 | 2013-08-29 | 中兴通讯股份有限公司 | Device and method for synchronously calibrating multi-transmitting/receiving channel of active antenna |
-
2017
- 2017-02-28 CN CN201710112332.2A patent/CN108512612B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335966A (en) * | 2008-06-30 | 2008-12-31 | 华为技术有限公司 | Multi-antenna correcting method, multi-antenna transceiving device and base station system |
| CN102413082A (en) * | 2011-07-29 | 2012-04-11 | 西安空间无线电技术研究所 | Calibration method and calibration system for amplitude phase error of satellite-borne DBF (Digit Beam Forming) transmitting channel |
| CN102426300A (en) * | 2011-08-31 | 2012-04-25 | 西安空间无线电技术研究所 | Calibration system of amplitude and phase errors of satellite-borne wave beam formation reception channels and method thereof |
| WO2013123753A1 (en) * | 2012-02-21 | 2013-08-29 | 中兴通讯股份有限公司 | Device and method for synchronously calibrating multi-transmitting/receiving channel of active antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108512612A (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108512612B (en) | Transmitting and receiving calibration device, system and method | |
| US10396845B2 (en) | Split microwave backhaul transceiver architecture with coaxial interconnect | |
| EP2396851B1 (en) | Communication system, apparatus and methods for calibrating an antenna array | |
| US11469498B2 (en) | Systems and methods for self-calibration of an analog beamforming transceiver | |
| EP2396854B1 (en) | Communication system, network element and method for antenna array calibration | |
| JP5958944B2 (en) | Uplink training for implicit beamforming at MIMO | |
| JP5869682B2 (en) | Method, processing device, computer program, and antenna device for calibration of antenna device in antenna array system | |
| US9356809B2 (en) | Method and apparatus for performing communication in multi-stage beam forming system | |
| US9948407B2 (en) | Method and apparatus for beamforming calibration in point to multipoint communication systems | |
| EP2533360B1 (en) | Method and device for antenna calibration | |
| CN109075840B (en) | Method and apparatus for channel sounding for MU-MIMO wireless communication networks | |
| US9774357B2 (en) | Multi-channel array distortion compensation apparatus and method | |
| JP2009188546A (en) | Radio communication device, antenna calibration method, and program | |
| US20220338025A1 (en) | Methods and apparatuses for receiving and sending reference signal | |
| KR20120088619A (en) | Method and apparatus for antenna mapping selection in mimo-ofdm wireless networks | |
| JP2016195331A (en) | Array antenna transmitter receiver and calibration value calculation method | |
| EP3343792B1 (en) | Data transmission method, apparatus and antenna array | |
| CN109150323B (en) | Antenna calibration method, wireless remote unit to be calibrated and base station | |
| US11990963B2 (en) | Radio communication apparatus and radio transmission method | |
| EP4391418A1 (en) | Signal transmission apparatus and signal transmission method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190306 Address after: 100097 No. 308, Block C, 51 Hunan Road, Kunming, Haidian District, Beijing Applicant after: Beijing Jiutian Microstar Communication Technology Co., Ltd. Address before: 100193 Xinwei Building, Building 7, Zhongguancun Software Park, 8 Wangxi Road, Haidian District, Beijing Applicant before: Xinwei Communications Technological Co., Ltd., Beijing |
|
| TA01 | Transfer of patent application right | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |