CN116015590B - Signal phase alignment method, device and related equipment - Google Patents
Signal phase alignment method, device and related equipment Download PDFInfo
- Publication number
- CN116015590B CN116015590B CN202211734184.5A CN202211734184A CN116015590B CN 116015590 B CN116015590 B CN 116015590B CN 202211734184 A CN202211734184 A CN 202211734184A CN 116015590 B CN116015590 B CN 116015590B
- Authority
- CN
- China
- Prior art keywords
- phase
- relative
- value
- signal
- approximate
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
The invention provides a method, a device and related equipment for aligning phases of signals, comprising the following steps: obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal; determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal; a phase adjustment factor is determined from the approximate relative phase, the phase adjustment factor being used to phase align the transmit signal with the feedback signal. According to the signal phase alignment method provided by the embodiment of the invention, the real part and the imaginary part of the transmitted signal and the feedback signal are operated, so that the process of angle calculation of the transmitted signal and the feedback signal is avoided, and the alignment efficiency of a transmitter and a receiver is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for phase alignment of a signal, and related devices.
Background
In DFE (Digital Front End ) algorithms of a transmitter, such as DPD (Digital Pre-Distortion), IQ compensation and the like, algorithms typically require that a transmit signal (which may be any of the DFEs) be compared to a receive feedback signal, and therefore alignment between the receive feedback signal and the transmit signal is required so that obtaining accurate values of the receive signal and the transmit signal may ignore the effects of gain, delay, phase rotation, etc. on the analog path on the DFE algorithm. At present, the receiving feedback signal and the transmitting signal are directly operated in a chip in a digital hardware logic mode, but because the receiving feedback signal and the transmitting signal are generally in real complex numbers, the required hardware resources are high, and the problem of low alignment efficiency of the receiving feedback signal and the transmitting signal occurs.
Disclosure of Invention
The method, the device and the related equipment for aligning the phases of the signals solve the problem that hardware resources are needed for aligning the feedback signals and the transmitting signals in the prior art.
In a first aspect, an embodiment of the present invention provides a method for phase alignment of signals, including:
obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal;
determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
a phase adjustment factor is determined from the approximate relative phase, the phase adjustment factor being used to phase align the transmit signal with the feedback signal.
Optionally, before obtaining the product of the transmission signal and the conjugate of the feedback signal corresponding to the transmission signal, the method further includes:
and performing amplitude alignment on the transmitting signal and the feedback signal.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes:
determining a reference relative phase corresponding to the approximate relative phase in a reference quadrant, wherein the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relations:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
determining a reference adjustment factor corresponding to the reference relative phase according to a first mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference regulating factor according to the phase relation satisfied by the approximate relative phase to obtain the phase regulating factor.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes: determining an approximate relative value corresponding to the approximate relative phase according to a second mapping relation, wherein the value range of the approximate relative value is [ -P, P ];
determining a reference relative value corresponding to the approximate relative value in a reference value range, wherein a phase range corresponding to the reference quadrant of the reference value range has the second mapping relation, the reference relative value and the reference relative phase have the second mapping relation, and the approximate relative value satisfies one of the following value relations:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
determining a reference adjustment factor corresponding to the reference relative value according to a third mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference adjusting factor according to the numerical relation satisfied by the approximate relative numerical value to obtain the phase adjusting factor.
In a second aspect, an embodiment of the present invention further provides a phase alignment apparatus for a signal, including:
the acquisition module is used for acquiring the product of the conjugate of the transmitting signal and the feedback signal corresponding to the transmitting signal;
a determining module for determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
an alignment module for determining a phase adjustment factor based on the approximate relative phase, the phase adjustment factor for phase aligning the transmit signal with the feedback signal.
In a third aspect, an embodiment of the present invention further provides an electronic device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory to implement the steps in the phase alignment method of a signal as claimed in any one of the first aspects.
In a fourth aspect, an embodiment of the present invention further provides a readable storage medium storing a program, wherein the program when executed by a processor implements the steps of the phase alignment method of a signal according to any one of the first aspects.
The invention provides a method, a device and related equipment for aligning phases of signals, comprising the following steps: obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal; determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal; a phase adjustment factor is determined from the approximate relative phase, the phase adjustment factor being used to phase align the transmit signal with the feedback signal. According to the signal phase alignment method provided by the embodiment of the invention, the real part and the imaginary part of the transmitted signal and the feedback signal are operated, so that the process of angle calculation of the transmitted signal and the feedback signal is avoided, and the alignment efficiency of a transmitter and a receiver is improved.
Drawings
Fig. 1 is a schematic flow chart of a phase alignment method of a signal according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a transmitting and receiving system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a phase alignment apparatus for signals according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The power alignment method provided by the embodiment of the application is described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a phase alignment method of a signal according to an embodiment of the present invention, including:
step 101, obtaining the product of the transmission signal and the conjugate of the feedback signal corresponding to the transmission signal.
Step 102, determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal.
Step 103, determining a phase adjustment factor according to the approximate relative phase, wherein the phase adjustment factor is used for aligning the phase of the transmitting signal and the feedback signal.
In this embodiment, in the DFE algorithm of the transmitter, it is generally required to compare the transmission signal sent by the transmitter with the feedback signal received by the receiver, and since the gain, phase and delay of the analog circuit are not available in the transmission and reception system, it is required to align the feedback signal with the transmission signal in amplitude, phase and delay. At present, the phase alignment of the transmitting signal and the feedback signal is generally realized by digital hardware logic in a chip, the method needs to perform angle calculation processing on the values of the transmitting signal and the feedback signal through logic, and a CORDIC algorithm is needed to be used under the condition that the transmitting signal and the feedback signal are complex, so that the consumption resources are relatively large.
Referring to fig. 2, fig. 2 is a schematic diagram of a transmitting and feedback system according to an embodiment of the present invention, in fig. 2, LO1 is used to indicate the aforementioned first LOCAL OSCILLATOR (LO), DCI1 is used to indicate a DC offset corresponding to an In-phase component (In-phase) In a transmitter, DCQ1 is used to indicate a DC offset corresponding to a quadrature component (quadrature) In the transmitter, k1 is used to indicate an incomplete quadrature loss In the transmitter, g1 is used to indicate a gain imbalance loss In the transmitter, and DCI1, DCQ1, k1 and g1 are collectively referred to as I/Q mismatch and DC mismatch of the transmitter. Similarly, in fig. 2, LO2 is used to indicate the aforementioned second local oscillator, DCI2 is used to indicate DC offset corresponding to In-phase component (In-phase) In the receiver, DCQ2 is used to indicate DC offset corresponding to quadrature component (quadrature) In the receiver, k2 is used to indicate incomplete quadrature loss In the receiver, g2 is used to indicate gain imbalance loss In the receiver, and DCI2, DCQ2, k2 and g2 are collectively referred to as I/Q mismatch and DC mismatch of the receiver.
In particular, the transmitter transmits a transmission signal and the receiver receives a feedback signal generated from the transmission signal, wherein the transmission signal and the feedback signal may be embodied as complex signals, wherein the complex numbers comprise a real part and an imaginary part, in particular, a certain point on the transmission signal X may be denoted as x=a+jb, and a certain point on the feedback signal Y may be denoted as y=c+jd, wherein a is a first real part, b is a first imaginary part, c is a second real part, and d is a second imaginary part.
Optionally, before obtaining the product of the transmission signal and the conjugate of the feedback signal corresponding to the transmission signal, the method further includes:
and performing amplitude alignment on the transmitting signal and the feedback signal.
In this embodiment, the transmit signal and the feedback signal may also be aligned in amplitude before the product of the transmit signal and the conjugate of the transmit signal's corresponding feedback signal is obtained.
Based on this, in this embodiment, x may also be expressed as x=r·exp (jw), y=r·exp (jw+Δ), where r is the modulus of x and y, and the conjugate multiplication of the transmit signal and the feedback signal may be expressed as x·y=r 2 ·exp(-Δj)＝r 2 ·{cos(Δ)+j·sin(-Δ)}。
Further, it should be appreciated that when the transmit signal is phase aligned with the feedback signal, there is a relative phase Δ approaching 0, where Δ=sin (Δ) is approximated, so that the imaginary part of the conjugate product can be determined as the approximate relative phase of the transmit signal and the feedback signal. For example, for N sampling points, it may be determined that:
thereby, compared with the prior art, the method passes throughFind the phase corresponding to x byThe implementation mode of determining the relative phase by determining the phase corresponding to y and then determining the difference between the two phases can simplify the acquisition mode of the relative phase, further greatly reduce the logic resource realized by the phase alignment hardware, ensure that the performance loss is not great, and even if the loss exists, the loss can be compensated by more averages. In other words, the embodiment obtains the approximate relative phase through the conjugate multiplication operation of the transmitting signal and the feedback signal, avoids the process of angle calculation of the transmitting signal and the feedback signal, and improves the alignment efficiency of the transmitter and the receiver.
In this embodiment, the phase adjustment factor may be determined successively based on the above approximation until phase alignment is achieved, or may be determined successively based on the prior art until the relative phase is less than a preset threshold, and then the above approximation is adopted until phase alignment is achieved.
Further, it should be appreciated that the sign of Δ may also be determined by determining the imaginary part of the conjugate product, i.e., the phase magnitude relationship between the transmit signal and the feedback signal, e.g., when Δ is positive (e.g., the imaginary part of the conjugate product falls in the fourth quadrant), the phase of the feedback signal is greater than the phase of the transmit signal, and when Δ is negative (e.g., the imaginary part of the conjugate product falls in the first quadrant), the phase of the feedback signal is less than the phase of the transmit signal, such that the rotation of the phases may be adjusted based on the determination to achieve phase alignment of the transmit signal and the feedback signal.
Further, in this embodiment, only the cos value and the sin value corresponding to the reference quadrant (e.g., the first quadrant) may be stored, and the cos value and the sin value corresponding to the approximate relative phase may be determined by combining the mathematical relationships between the different quadrants, so as to obtain the phase adjustment factor, so as to reduce the requirement on the storage resource.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes:
determining a reference relative phase corresponding to the approximate relative phase in a reference quadrant, wherein the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relations:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
determining a reference adjustment factor corresponding to the reference relative phase according to a first mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference regulating factor according to the phase relation satisfied by the approximate relative phase to obtain the phase regulating factor.
Specifically, when the reference quadrant is the first quadrant, the range of the reference relative phase is [0, pi/2 ], if the approximate relative phase is pi/4, the reference phase pi/4 is present, the reference adjustment factor cos beta+isiin beta corresponding to the reference phase pi/4 is determined according to the preset first mapping relation, and the approximate relative phase is equal to the reference phase and is located in the first quadrant, so that the phase adjustment factor cos beta+isiin beta is present; for another example, if the approximate relative phase takes a value of 3 pi/4, there is a reference phase pi/4, and a reference adjustment factor cos β+isiin β corresponding to the reference phase pi/4 is determined according to a preset first mapping relationship, and since the approximate relative phase is located in the second quadrant and the reference phase is located in the first quadrant (the sum of the two is pi), there is a phase adjustment factor cos β+isiin β; for another example, if the approximate relative phase takes a value of-pi/4, there is a reference phase pi/4, and a reference adjustment factor cos β+isiin β corresponding to the reference phase pi/4 is determined according to a preset first mapping relationship, and since the approximate relative phase is located in the fourth quadrant and the reference phase is located in the first quadrant (the difference between the two is 0), there is a phase adjustment factor cos β -isiin β; for another example, if the approximate relative phase takes a value of-3 pi/4, there is a reference phase pi/4, and the reference adjustment factor cos β+isiin β corresponding to the reference phase pi/4 is determined according to the preset first mapping relation, and since the approximate relative phase is located in the third quadrant and the reference phase is located in the first quadrant (the difference between the two is-pi), there is a phase adjustment factor cos β -isiin β. The first mapping relationship may be implemented as a preset lookup table, so that a corresponding reference adjustment factor may be found based on the determined reference phase, and specifically, the lookup table may be implemented as a sin value lookup table and a cos lookup table, respectively, so that a real part and an imaginary part of the corresponding reference adjustment factor may be found based on the determined reference phase. Furthermore, it should be understood that approximating the range of values of relative phase [ -pi, pi ] is only an example, and that other variations are possible based on mathematical relationships, such as, for example, [0,2 pi ] etc.
Further, considering that the steps of determining the reference phase based on the approximate relative phase involve pi operation, in order to further reduce complexity of operation hardware and requirement on storage resources, linear or nonlinear monotonic mapping can be performed on the approximate relative phase to realize angle-to-numerical mapping, so as to avoid pi operation.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes: determining an approximate relative value corresponding to the approximate relative phase according to a second mapping relation, wherein the value range of the approximate relative value is [ -P, P ];
determining a reference relative value corresponding to the approximate relative value in a reference value range, wherein a phase range corresponding to the reference quadrant of the reference value range has the second mapping relation, the reference relative value and the reference relative phase have the second mapping relation, and the approximate relative value satisfies one of the following value relations:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
determining a reference adjustment factor corresponding to the reference relative value according to a third mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference adjusting factor according to the numerical relation satisfied by the approximate relative numerical value to obtain the phase adjusting factor.
For example, the second mapping relationship may be implemented as 2/pi-fold amplification, so that the value range of the approximate relative phase in the above example is [ -pi, pi ] may be converted into the reference value range [ -2,2], where p=2, when the reference quadrant is the first quadrant, there is the reference value range [0,1], if the value of the approximate relative phase is pi/4, there is the approximate relative value 1/2, the reference value 1/2, and the reference adjustment factor cos β+isin β corresponding to the reference value 1/2 is determined according to the preset third mapping relationship, and since the approximate relative value is equal to the reference value, there is the phase adjustment factor cos β+isin β; for another example, if the approximate relative phase value is 3pi/4, the approximate relative value is 3/2, the reference value is 1/2, the reference adjustment factor cos beta+isinβ corresponding to the reference value 1/2 is determined according to the preset third mapping relation, and the sum of the approximate relative value and the reference value is 2, so that the phase adjustment factor cos beta+isinβ is obtained; for another example, if the approximate relative phase value is-pi/4, the approximate relative value is-1/2, the reference value is 1/2, the reference adjustment factor cos beta+isinβ corresponding to the reference value 1/2 is determined according to the preset third mapping relation, and the sum of the approximate relative value and the reference phase is 0, so that the phase adjustment factor cos beta-isinβ is present; for another example, if the approximate relative phase value is-3pi/4, there is an approximate relative value-3/2, a reference value 1/2, and the reference adjustment factor cos β+isinβ corresponding to the reference value 1/2 is determined according to the preset third mapping relation, and the difference between the approximate relative value and the reference value is-2, so that there is the phase adjustment factor cos β -isinβ. The third mapping relationship may be implemented as a preset lookup table, so that a corresponding reference adjustment factor may be found based on the determined reference value, and specifically, the lookup table may be implemented as a sin value lookup table and a cos lookup table, respectively, so that a real part and an imaginary part of the corresponding reference adjustment factor may be found based on the determined reference phase. It should be appreciated that the lookup table corresponding to the third mapping relationship may be determined based on the second mapping relationship and the lookup table corresponding to the first mapping relationship, and specifically, the second mapping relationship exists between indexes of the two lookup tables or is determined based on the second mapping relationship.
The invention provides a phase alignment method of signals, which comprises the following steps: obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal; determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal; a phase adjustment factor is determined from the approximate relative phase, the phase adjustment factor being used to phase align the transmit signal with the feedback signal. According to the signal phase alignment method provided by the embodiment of the invention, the real part and the imaginary part of the transmitted signal and the feedback signal are operated, so that the process of angle calculation of the transmitted signal and the feedback signal is avoided, and the alignment efficiency of a transmitter and a receiver is improved.
Referring to fig. 3, fig. 3 is a block diagram of a phase alignment apparatus for signals according to an embodiment of the present invention. As shown in fig. 3, an apparatus for phase alignment of signals, comprising:
an obtaining module 310, configured to obtain a product of a transmission signal and a conjugate of a feedback signal corresponding to the transmission signal;
a determining module 320 for determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
an alignment module 330 for determining a phase adjustment factor based on the approximate relative phase, the phase adjustment factor for phase aligning the transmit signal with the feedback signal.
Optionally, the method further comprises:
and the amplitude alignment module is used for carrying out amplitude alignment on the transmitting signal and the feedback signal.
Optionally, the alignment module 330 further includes:
a first determining submodule, configured to determine a reference relative phase corresponding to the approximate relative phase in a reference quadrant, where the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relationships:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
the second determining submodule is used for determining a reference regulating factor corresponding to the reference relative phase according to the first mapping relation;
and the adjustment submodule is used for adjusting the signs of the real part and the imaginary part of the reference adjustment factor according to the phase relation satisfied by the approximate relative phase to obtain the phase adjustment factor.
Optionally, the first determining submodule is specifically configured to determine an approximate relative value corresponding to the approximate relative phase according to a second mapping relationship, where a value range of the approximate relative value is [ -P, P ];
determining a reference relative value corresponding to the approximate relative value in a reference value range, wherein a phase range corresponding to the reference quadrant of the reference value range has the second mapping relation, the reference relative value and the reference relative phase have the second mapping relation, and the approximate relative value satisfies one of the following value relations:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
the second determining submodule is specifically configured to determine a reference adjustment factor corresponding to the reference relative value according to a third mapping relationship;
the adjusting submodule is specifically configured to adjust symbols of the real part and the imaginary part of the reference adjustment factor according to the numerical relation satisfied by the approximate relative numerical value, so as to obtain the phase adjustment factor.
The invention provides a phase alignment device of a signal, comprising: the acquisition module is used for acquiring the product of the conjugate of the transmitting signal and the feedback signal corresponding to the transmitting signal; a determining module for determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal; an alignment module for determining a phase adjustment factor based on the approximate relative phase, the phase adjustment factor for phase aligning the transmit signal with the feedback signal. According to the signal phase alignment method provided by the embodiment of the invention, the real part and the imaginary part of the transmitted signal and the feedback signal are operated, so that the process of angle calculation of the transmitted signal and the feedback signal is avoided, and the alignment efficiency of a transmitter and a receiver is improved.
The embodiment of the invention also provides communication equipment. Referring to fig. 4, a communication device may include a processor 401, a memory 402, and a program 4021 stored on the memory 402 and executable on the processor 401.
The program 4021, when executed by the processor 401, may implement any of the steps in the method embodiment corresponding to fig. 1:
obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal;
determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
a phase adjustment factor is determined from the approximate relative phase, the phase adjustment factor being used to phase align the transmit signal with the feedback signal.
Optionally, before obtaining the product of the transmission signal and the conjugate of the feedback signal corresponding to the transmission signal, the method further includes:
and performing amplitude alignment on the transmitting signal and the feedback signal.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes:
determining a reference relative phase corresponding to the approximate relative phase in a reference quadrant, wherein the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relations:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
determining a reference adjustment factor corresponding to the reference relative phase according to a first mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference regulating factor according to the phase relation satisfied by the approximate relative phase to obtain the phase regulating factor.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes: determining an approximate relative value corresponding to the approximate relative phase according to a second mapping relation, wherein the value range of the approximate relative value is [ -P, P ];
determining a reference relative value corresponding to the approximate relative value in a reference value range, wherein a phase range corresponding to the reference quadrant of the reference value range has the second mapping relation, the reference relative value and the reference relative phase have the second mapping relation, and the approximate relative value satisfies one of the following value relations:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
determining a reference adjustment factor corresponding to the reference relative value according to a third mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference adjusting factor according to the numerical relation satisfied by the approximate relative numerical value to obtain the phase adjusting factor.
According to the signal phase alignment method provided by the embodiment of the invention, the real part and the imaginary part of the transmitted signal and the feedback signal are operated, so that the process of angle calculation of the transmitted signal and the feedback signal is avoided, and the alignment efficiency of a transmitter and a receiver is improved. Those of ordinary skill in the art will appreciate that all or a portion of the steps of implementing the methods of the embodiments described above may be implemented by hardware associated with program instructions, where the program may be stored on a readable medium.
The embodiment of the present invention further provides a readable storage medium, where a computer program is stored, where the computer program when executed by a processor may implement the steps in the method embodiment corresponding to fig. 1, as described above:
obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal;
determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
a phase adjustment factor is determined from the approximate relative phase, the phase adjustment factor being used to phase align the transmit signal with the feedback signal.
Optionally, before obtaining the product of the transmission signal and the conjugate of the feedback signal corresponding to the transmission signal, the method further includes:
and performing amplitude alignment on the transmitting signal and the feedback signal.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes:
determining a reference relative phase corresponding to the approximate relative phase in a reference quadrant, wherein the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relations:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
determining a reference adjustment factor corresponding to the reference relative phase according to a first mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference regulating factor according to the phase relation satisfied by the approximate relative phase to obtain the phase regulating factor.
Optionally, the determining the phase adjustment factor according to the approximate relative phase includes: determining an approximate relative value corresponding to the approximate relative phase according to a second mapping relation, wherein the value range of the approximate relative value is [ -P, P ];
determining a reference relative value corresponding to the approximate relative value in a reference value range, wherein a phase range corresponding to the reference quadrant of the reference value range has the second mapping relation, the reference relative value and the reference relative phase have the second mapping relation, and the approximate relative value satisfies one of the following value relations:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
determining a reference adjustment factor corresponding to the reference relative value according to a third mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference adjusting factor according to the numerical relation satisfied by the approximate relative numerical value to obtain the phase adjusting factor.
According to the signal phase alignment method provided by the embodiment of the invention, the real part and the imaginary part of the transmitted signal and the feedback signal are operated, so that the process of angle calculation of the transmitted signal and the feedback signal is avoided, and the alignment efficiency of a transmitter and a receiver is improved.
Any combination of one or more computer readable media may be employed in the computer readable storage media of the embodiments herein. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present application may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A method of phase alignment of a signal, the method comprising:
obtaining the product of the conjugate of a transmitting signal and a feedback signal corresponding to the transmitting signal;
determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
determining a phase adjustment factor based on the approximate relative phase, the phase adjustment factor for phase aligning the transmit signal with the feedback signal, the determining a phase adjustment factor based on the approximate relative phase comprising:
determining a reference relative phase corresponding to the approximate relative phase in a reference quadrant, wherein the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relations:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
determining a reference adjustment factor corresponding to the reference relative phase according to a first mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference regulating factor according to the phase relation satisfied by the approximate relative phase to obtain the phase regulating factor.
2. The method of claim 1, wherein prior to obtaining the product of the transmit signal and the conjugate of the transmit signal corresponding feedback signal, further comprising:
and performing amplitude alignment on the transmitting signal and the feedback signal.
3. The method of claim 1, wherein said determining a phase adjustment factor from said approximate relative phase comprises:
determining an approximate relative value corresponding to the approximate relative phase according to a second mapping relation, wherein the value range of the approximate relative value is [ -P, P ];
determining a reference relative value corresponding to the approximate relative value in a reference value range, wherein a phase range corresponding to the reference quadrant of the reference value range has the second mapping relation, the reference relative value and the reference relative phase have the second mapping relation, and the approximate relative value satisfies one of the following value relations:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
determining a reference adjustment factor corresponding to the reference relative value according to a third mapping relation;
and adjusting the signs of the real part and the imaginary part of the reference adjusting factor according to the numerical relation satisfied by the approximate relative numerical value to obtain the phase adjusting factor.
4. A phase alignment apparatus for signals, comprising:
the acquisition module is used for acquiring the product of the conjugate of the transmitting signal and the feedback signal corresponding to the transmitting signal;
a determining module for determining an imaginary part of the product as an approximate relative phase of the transmit signal and the feedback signal;
an alignment module for determining a phase adjustment factor based on the approximate relative phase, the phase adjustment factor for phase aligning the transmit signal with the feedback signal, the alignment module further comprising:
a first determining submodule, configured to determine a reference relative phase corresponding to the approximate relative phase in a reference quadrant, where the value range of the approximate relative phase is [ -pi, pi ], and the approximate relative phase satisfies one of the following phase relationships:
equal to the reference relative phase;
the sum of the relative phases to the reference is 0;
the sum of the relative phases to the reference is pi;
the difference from the reference relative phase is-pi;
the second determining submodule is used for determining a reference regulating factor corresponding to the reference relative phase according to the first mapping relation;
and the adjustment submodule is used for adjusting the signs of the real part and the imaginary part of the reference adjustment factor according to the phase relation satisfied by the approximate relative phase to obtain the phase adjustment factor.
5. The apparatus as recited in claim 4, further comprising:
and the amplitude alignment module is used for carrying out amplitude alignment on the transmitting signal and the feedback signal.
6. The apparatus of claim 4, wherein the device comprises a plurality of sensors,
the first determining submodule is specifically configured to determine an approximate relative value corresponding to the approximate relative phase according to a second mapping relationship, where a value range of the approximate relative value is [ -P, P ];
the first determining submodule is specifically further configured to determine a reference relative value corresponding to the approximate relative value in a reference value range, where a phase range corresponding to the reference value range and the reference quadrant has the second mapping relationship, and the reference relative value and the reference relative phase have the second mapping relationship, and the approximate relative value satisfies one of the following numerical relationships:
equal to the reference relative value;
the sum of the relative values to the reference is 0;
the sum of the relative values to the reference is P;
the difference from the reference relative value is-P;
the second determining submodule is specifically configured to determine a reference adjustment factor corresponding to the reference relative value according to a third mapping relationship;
the adjusting submodule is specifically configured to adjust symbols of the real part and the imaginary part of the reference adjustment factor according to the numerical relation satisfied by the approximate relative numerical value, so as to obtain the phase adjustment factor.
7. An electronic device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; a processor for reading a program in a memory to implement the steps of the phase alignment method of a signal as claimed in any one of claims 1 to 3.
8. A readable storage medium storing a program, wherein the program when executed by a processor performs the steps in the phase alignment method of a signal as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211734184.5A CN116015590B (en) | 2022-12-30 | 2022-12-30 | Signal phase alignment method, device and related equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211734184.5A CN116015590B (en) | 2022-12-30 | 2022-12-30 | Signal phase alignment method, device and related equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116015590A CN116015590A (en) | 2023-04-25 |
| CN116015590B true CN116015590B (en) | 2023-07-21 |
Family
ID=86031405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211734184.5A Active CN116015590B (en) | 2022-12-30 | 2022-12-30 | Signal phase alignment method, device and related equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116015590B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115987729B (en) * | 2022-06-24 | 2023-09-29 | 上海星思半导体有限责任公司 | Phase alignment method, phase alignment apparatus, and computer-readable storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4723247A (en) * | 1987-01-30 | 1988-02-02 | Rockwell International Corporation | Phase conjugating plasma mirror free electron laser |
| CN102710393A (en) * | 2012-05-25 | 2012-10-03 | 中国科学技术大学 | Interference alignment precoding method based on Stiefel manifold |
| WO2014023727A1 (en) * | 2012-08-06 | 2014-02-13 | Nokia Siemens Networks Oy | Method and apparatus providing inter-transmission point phase relationship feedback for joint transmission comp |
| CN105471784A (en) * | 2016-01-13 | 2016-04-06 | 中国人民解放军国防科学技术大学 | Digital predistortion method of jointly compensating for IQ imbalance and PA non-linearity |
| CN106850495A (en) * | 2017-01-11 | 2017-06-13 | 深圳市极致汇仪科技有限公司 | IQ based on initial phase compensation is uneven to be estimated and compensation method and device |
| CN112073351A (en) * | 2020-11-16 | 2020-12-11 | 湖南国科锐承电子科技有限公司 | Novel carrier frequency offset estimation method for MPSK system |
| WO2022134995A1 (en) * | 2020-12-21 | 2022-06-30 | 中兴通讯股份有限公司 | Time delay adjustment method and apparatus, and storage medium and electronic apparatus |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7724840B2 (en) * | 2006-12-19 | 2010-05-25 | Crestcom, Inc. | RF transmitter with predistortion and method therefor |
| US20120033566A1 (en) * | 2008-08-28 | 2012-02-09 | Wi-Lan, Inc. | Hybrid feedback for closed loop multiple-input multiple- output |
| US8072380B2 (en) * | 2009-04-10 | 2011-12-06 | Raytheon Company | Wireless power transmission system and method |
| WO2011085082A2 (en) * | 2010-01-08 | 2011-07-14 | Interdigital Patent Holdings, Inc. | Augmented wireless feedback |
| CN103900682B (en) * | 2012-12-26 | 2016-02-03 | 中国科学院声学研究所 | A kind of time-frequency combination formula signal fluctuation alignment detection method and system |
| CN104023418A (en) * | 2014-06-27 | 2014-09-03 | 绵阳师范学院 | Rapid phase position alignment method for decentralized wireless sensor network cooperative communication |
| CN105187348B (en) * | 2015-05-31 | 2018-04-13 | 中国电子科技集团公司第十研究所 | Arbitrary velocity CPFSK signal timing synchronous method |
| US9564913B1 (en) * | 2016-03-09 | 2017-02-07 | Analog Devices, Inc. | Synchronization of outputs from multiple digital-to-analog converters |
| CN109565482B (en) * | 2017-02-28 | 2021-01-29 | 华为技术有限公司 | Transmitter and digital predistortion calibration method |
| CN111800090A (en) * | 2019-11-07 | 2020-10-20 | 中科威发半导体（苏州）有限公司 | Amplitude mismatch calibration circuit |
| CN112838995B (en) * | 2020-12-31 | 2023-02-03 | 北京新岸线移动多媒体技术有限公司 | Broadband digital predistortion method and digital predistorter |
| CN115987729B (en) * | 2022-06-24 | 2023-09-29 | 上海星思半导体有限责任公司 | Phase alignment method, phase alignment apparatus, and computer-readable storage medium |
-
2022
- 2022-12-30 CN CN202211734184.5A patent/CN116015590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4723247A (en) * | 1987-01-30 | 1988-02-02 | Rockwell International Corporation | Phase conjugating plasma mirror free electron laser |
| CN102710393A (en) * | 2012-05-25 | 2012-10-03 | 中国科学技术大学 | Interference alignment precoding method based on Stiefel manifold |
| WO2014023727A1 (en) * | 2012-08-06 | 2014-02-13 | Nokia Siemens Networks Oy | Method and apparatus providing inter-transmission point phase relationship feedback for joint transmission comp |
| CN105471784A (en) * | 2016-01-13 | 2016-04-06 | 中国人民解放军国防科学技术大学 | Digital predistortion method of jointly compensating for IQ imbalance and PA non-linearity |
| CN106850495A (en) * | 2017-01-11 | 2017-06-13 | 深圳市极致汇仪科技有限公司 | IQ based on initial phase compensation is uneven to be estimated and compensation method and device |
| CN112073351A (en) * | 2020-11-16 | 2020-12-11 | 湖南国科锐承电子科技有限公司 | Novel carrier frequency offset estimation method for MPSK system |
| WO2022134995A1 (en) * | 2020-12-21 | 2022-06-30 | 中兴通讯股份有限公司 | Time delay adjustment method and apparatus, and storage medium and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116015590A (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9712369B2 (en) | Method and apparatus for low-complexity frequency dependent IQ imbalance compensation | |
| CN116015590B (en) | Signal phase alignment method, device and related equipment | |
| US5748680A (en) | Coarse frequency burst detector for a wireline communications system | |
| CN109076040B (en) | Phase compensation device, phase compensation method, and communication device | |
| CN114726702B (en) | Method and device for estimating and compensating channel frequency offset | |
| JP5068109B2 (en) | Method and apparatus for compensating mismatch in digital quadrature transmitter / receiver with direct conversion structure | |
| Liu et al. | Demonstration of a carrier frequency offset estimator for 16-/32-QAM coherent receivers: A hardware perspective | |
| AU764136B2 (en) | Amplitude calculation circuit | |
| WO2013105538A1 (en) | Method for iq mismatch compensation, and rf transceiver device | |
| CN111917672B (en) | IQ path orthogonal estimation and calibration method for carrier wireless dual-mode communication | |
| US5504453A (en) | Method and device for estimating phase error | |
| Liu et al. | Investigation of the low-complexity Hilbert FIR filter enhanced 112-Gbit/s SSB 16-QAM transmission with parallelized Kramers-Kronig reception over 1440-km SSMF | |
| CN107733832B (en) | APSK receiver and method for extracting local carrier phase error thereof | |
| EP2995052B1 (en) | Correction of quadrature phase and gain mismatch in receiver down-conversion using a dual cordic architecture | |
| CN113765838B (en) | DPSK signal demodulation method, device, equipment and storage medium | |
| Reddy | Experimental validation of timing, frequency and phase correction of received signals using software defined radio testbed | |
| JPH10210093A (en) | Signal offset eliminating method | |
| CN115002582A (en) | Universal multiplication-free clock phase error detection method and module | |
| CN101795252A (en) | Direct variable frequency modulation method and modulation device thereof | |
| US9712198B1 (en) | Apparatus and method for providing background real-time second order input intercept point calibration | |
| WO2023061213A1 (en) | Optical signal skew extraction method and apparatus, electronic device, and storage medium | |
| CN113395229B (en) | Coherent demodulation method and device suitable for pi/4-DQPSK and readable storage medium | |
| US20200304171A1 (en) | Dispersive waveguide crosstalk mitigation | |
| CN110212997A (en) | A kind of acquisition methods and device for modulating the bit error rate | |
| JP6009953B2 (en) | Optical receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |