CN104469925B - A kind of frequency domain auto gain control method and device - Google Patents
A kind of frequency domain auto gain control method and device Download PDFInfo
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- CN104469925B CN104469925B CN201410708847.5A CN201410708847A CN104469925B CN 104469925 B CN104469925 B CN 104469925B CN 201410708847 A CN201410708847 A CN 201410708847A CN 104469925 B CN104469925 B CN 104469925B
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- frequency domain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
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Abstract
The embodiment of the invention discloses a kind of frequency domain auto gain control method, including：Determine the resource particle RE that the N kind frequency domain OFDM signals of present sub-frame carrying each account for；N is the integer more than 1；Calculate the N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame；Power according to the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated is adjusted.The embodiment of the invention also discloses a kind of frequency domain automatic gain control equipment.Using the present invention, the quantization bit wide of signal can be reduced.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of frequency domain auto gain control method and device.
Background technology
In wireless communications, due to by channel fading, load, base station power control strategy and remote apart from base station location
The influence of the factor such as near, receiver need to support very big reception dynamic range.In order to reduce the bit wide of numeric field, it is necessary to according to
The power for receiving signal uses AGC (Automatic Gain Control, automatic growth control, abbreviation AGC) mode, adjusts
The gain of whole radio-frequency devices and the gain of digital baseband, by reception signal adjustment to a suitable scope.Receiver pair at present
Frequency-region signal after FFT (Fast Fourier Transformation, Fast Fourier Transform (FFT), abbreviation FFT) processing
DAGCF (Frequency Domain DigitalAutomatic Gain Control, frequency domain automatic growth control) method is：
The mean power of the mixed signal of frequency-region signal of the statistics containing a variety of different capacities, calculates mean power and the difference of target power
DAGCF gains are worth to, on each RE that the DAGCF gain effects being calculated to mixed signal are taken, to reach certainly
The effect of dynamic adjustment receiver gain.
Above-mentioned DAGCF deficiency is：Each RE (Resource Element, resource particle, abbreviation RE) uses identical
DAGCF gains, when each frequency-region signal power difference is larger in mixed signal, DAGCF processing after signal need to use
Very big bit wide is quantified.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is, there is provided a kind of frequency domain auto gain control method and dress
Put.Can solve the problems, such as to quantify bit wide demand in the prior art big.
In order to solve the above-mentioned technical problem, the embodiments of the invention provide a kind of frequency domain auto gain control method, including：
Determine the resource particle RE that the N kind frequency domain OFDM signals of present sub-frame carrying each account for；N is
Integer more than 1；
Calculate the N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame；
Power according to the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated is adjusted.
With reference in a first aspect, in the first possible implementation, the N kinds frequency-domain OFDM of the present sub-frame carrying is believed
Number include reference signal and/or physical channel signal.
With reference to the first possible implementation of first aspect, in second of possible implementation, the N kinds frequency
Domain ofdm signal includes reference signal and physical channel signal, and target frequency domain ofdm signal is in the N kinds frequency domain ofdm signal
Physical channel signal,
Calculating N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame is specifically wrapped
Include：
Inquire about the reference signal of the target frequency domain ofdm signal association under current transmission mode；
It is the integer more than 1 to determine the M RE that the reference signal of the association takes in the present sub-frame, M；
The mean power of the M RE is counted, according to being calculated the mean power and default target power
Frequency domain gain of the reference signal of association in the present sub-frame；
Using the frequency domain that frequency domain gain is calculated as the target frequency domain ofdm signal in the present sub-frame
Gain.
With reference to second of possible implementation of first aspect, in the third possible implementation, the calculating
The N kinds frequency domain ofdm signal in the present sub-frame before each self-corresponding frequency domain gain, in addition to：
If the current transmission mode is any one in transmission mode 1 to transmission mode 6, the physics that base station is sent
Down control channel PDCCH signals and Physical Downlink Shared Channel PDSCH signals are associated with public reference signal CRS；Its
Middle N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is any one in transmission mode 7 to transmission mode 9, base station is sent
PDCCH signals and CRS are associated, and the PDSCH signals and demodulated reference signal DMRS that the base station is sent are associated；
Wherein N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is transmission mode 10, PDCCH signals that each base station in P base station is sent and
CRS is associated, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and
For integer, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
With reference to any one in first aspect to the third possible implementation, in the 4th kind of possible implementation
In, the resource particle RE that each accounts for of N kind frequency domain ofdm signals for determining present sub-frame carrying；N be integer more than 1 it
Before, in addition to：
Analog baseband signal is obtained after the analog radio-frequency signal that the base station is sent is carried out into radio frequency processing；
Digital base stations signal is obtained after the analog baseband signal is carried out into patten transformation；
Processing is filtered to the digital baseband signal；
Signal after filtering process is subjected to time-domain digital automatic growth control DAGCT；
Cyclic prefix CP is gone to handle the signal after progress DAGCT；
The N kinds frequency domain ofdm signal is obtained after signal after going CP to handle is carried out into Fast Fourier Transform (FFT) FFT.
With reference to first aspect second to the 4th kind of possible implementation in any one, in the 5th kind of possible reality
In existing mode, the mean power of the statistics M RE specifically includes：
The general power on the M RE is measured, the general power divided by M are obtained into the mean power of the M RE.
Second aspect of the embodiment of the present invention provides a kind of frequency domain automatic gain control equipment, including：
Determining module, what the N kind frequency domain OFDM signals for determining present sub-frame carrying each accounted for
Resource particle RE；N is the integer more than 1；
Computing module, increase for calculating the N kinds frequency domain ofdm signal each self-corresponding frequency domain in the present sub-frame
Benefit；
Adjusting module, for being entered according to the power that the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated
Row adjustment.
With reference to second aspect, in the first possible implementation, the N kinds frequency domain ofdm signal includes reference signal
And/or physical channel signal.
With reference to the first possible implementation of second aspect, in second of possible implementation, the N kinds frequency
Domain ofdm signal includes reference signal and physical channel signal,
The computing module is specifically used for the reference of the target frequency domain ofdm signal association under inquiry current transmission mode
Signal；It is the integer more than 1 to determine the M RE that the reference signal of the association takes in the present sub-frame, M；Statistics institute
M RE mean power is stated, the reference signal of the association is calculated according to the mean power and default target power
Frequency domain gain in the present sub-frame；Frequency domain gain is calculated as the target frequency domain ofdm signal in institute using described
State the frequency domain gain in present sub-frame.
With reference to second of possible implementation of second aspect, in the third possible implementation, in addition to：
Relating module, it is used for
If the current transmission mode is any one in transmission mode 1 to transmission mode 6, the physics that base station is sent
Down control channel PDCCH signals and Physical Downlink Shared Channel PDSCH signals are associated with public reference signal CRS；Its
Middle N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is any one in transmission mode 7 to transmission mode 9, base station is sent
PDCCH signals and CRS are associated, and the PDSCH signals and demodulated reference signal DMRS that the base station is sent are associated；
Wherein N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is transmission mode 10, PDCCH signals that each base station in P base station is sent and
CRS is associated, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and
For integer, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
With reference to any one in second aspect to the third possible implementation, in the 4th kind of possible implementation
In, in addition to：
Radio frequency processing module, the analog radio-frequency signal for the base station to be sent obtain simulating base after carrying out radio frequency processing
Band signal；
Analog-to-digital conversion module, for obtaining digital base stations signal after the analog baseband signal is carried out into patten transformation；
Digital filtering module, for being filtered processing to the digital baseband signal；
DAGCT modules, for the signal after filtering process to be carried out into time-domain digital automatic growth control DAGCT；
CP modules are gone, for going cyclic prefix CP to handle the signal after progress DAGCT；
FFT module, for by go CP handle after signal carry out Fast Fourier Transform (FFT) FFT after obtain the N kinds frequency domain
Ofdm signal.
With reference to second aspect second to the 4th kind of possible implementation in any one, in the 5th kind of possible reality
In existing mode, the computing module is used to measure the general power on the M RE, and the general power divided by M are obtained into the M
RE mean power.
Implement the embodiment of the present invention, have the advantages that：
Respective frequency domain gain, and profit are counted by the different types of frequency domain ofdm signal carried to present sub-frame respectively
With respective frequency domain gain, to frequency domain ofdm signal, the corresponding RE power in present sub-frame is adjusted, and can overcome difference
The influence of the frequency domain ofdm signal difference power of type, the power of signal is adjusted to suitable scope, reduces and quantifies bit wide.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet for frequency domain auto gain control method that the embodiment of the present invention one provides；
Fig. 2 is the distributing position figure of the RE in the present sub-frame that the embodiment of the present invention one provides；
Fig. 3 is a kind of structural representation for frequency domain automatic gain control equipment that first embodiment of the invention provides；
Fig. 4 is a kind of structural representation for frequency domain automatic gain control equipment that second embodiment of the invention provides；
Fig. 5 is a kind of structural representation for frequency domain automatic gain control equipment that third embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The term " part " that uses in this manual, " module ", " system " etc. be used to representing the related entity of computer,
Hardware, firmware, the combination of hardware and software, software or executory software.For example, part can be but not limited to, handling
Process, processor, object, executable file, execution thread, program and/or the computer run on device.By diagram, counting
It can be part to calculate the application run in equipment and computing device.One or more parts can reside in process and/or execution
In thread, part can be located on a computer and/or be distributed between 2 or more computers.In addition, these parts can
Performed from the various computer-readable mediums that various data structures are stored with above.Part can be for example according to one or more
Individual packet (such as from two parts interacted with local system, distributed system and/or internetwork another part
Data, such as the internet by signal with other system interactions) signal communicated by locally and/or remotely process.
In addition, various aspects of the invention or feature can be implemented as method, apparatus or use standard program and/or engineering
The product of technology.Term " product " used herein is covered can be from any computer-readable device, carrier or medium access
Computer program.For example, computer-readable medium can include, but are not limited to:Magnetic memory device (for example, hard disk, floppy disk or
Tape etc.), CD is (for example, CD (Compact Disk, compact disk), DVD (Digital Versatile Disk, digital universal
Disk) etc.), smart card and flush memory device are (for example, (Erasable Programmable Read-Only Memory, can by EPROM
Erasable programmable read only memory), card, rod or Keyed actuator etc.).In addition, various storage media described herein can represent
One or more equipment and/or other machine readable medias for storage information.Term " machine readable media " may include but
It is not limited to, wireless channel and the various other media that can store, include and/or carry instruction and/or data.Referring to Fig. 1, it is
A kind of schematic flow sheet for auto gain control method that first embodiment of the invention provides, in embodiments of the present invention, perform
Main body is user equipment, and methods described includes：
S101, determine the resource particle that the N kind frequency domain OFDM signals of present sub-frame carrying each account for
RE；N is the integer more than 1.
Specifically, present sub-frame includes multiple resource particles for being used to represent the running time-frequency resource that frequency domain ofdm signal takes
RE, the RE frequency domain ofdm signal after FFT being mapped in present sub-frame, present sub-frame can carry a variety of frequency domain ofdm signals,
Every kind of frequency domain ofdm signal takes multiple RE in present sub-frame, and user equipment can be according to the carrying configuration information that base station is sent
Signaling determines the RE taken in each comfortable present sub-frame of a variety of frequency domain ofdm signals of present sub-frame carrying.Wherein, frequency-domain OFDM
Signal includes reference signal or physical channel signal.
S102, calculate N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame.
Specifically, user equipment calculates a variety of frequency-domain OFDMs (Orthogonal Frequency Division respectively
Multiplexing, OFDM, abbreviation OFDM) frequency domain gain of the signal in present sub-frame, for a variety of frequency domains
The computational methods of frequency domain gain of any one frequency domain ofdm signal in present sub-frame can be in ofdm signal：According to frequency domain
The ratio of mean power and target power of the ofdm signal in present sub-frame is worth to frequency domain gain.
The power that the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated in S103, basis is adjusted.
Specifically, user equipment is increased using the N number of frequency domain being calculated respectively according to the N number of frequency domain gain being calculated
The power for the RE that benefit takes to frequency domain ofdm signal is adjusted.
Implement embodiments of the invention, counted respectively by the different types of frequency domain ofdm signal carried to present sub-frame
Respective frequency domain gain, and to frequency domain ofdm signal, the corresponding RE power in present sub-frame enters using respective frequency domain gain
Row adjustment, can overcome the influence of different types of frequency domain ofdm signal difference power, the power of signal is adjusted into suitable model
Enclose, reduce and quantify bit wide.
Optionally, the N kinds frequency domain ofdm signal includes reference signal and physical channel signal, target frequency domain ofdm signal
For the physical channel signal in the N kinds frequency domain ofdm signal,
Calculating N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame is specifically wrapped
Include：
Inquire about the reference signal of the target frequency domain ofdm signal association under current transmission mode；
It is the integer more than 1 to determine the M RE that the reference signal of the association takes in the present sub-frame, M；
The mean power of the M RE is counted, according to being calculated the mean power and default target power
Frequency domain gain of the reference signal of association in the present sub-frame；
Using the frequency domain that frequency domain gain is calculated as the target frequency domain ofdm signal in the present sub-frame
Gain.
Specifically, if present sub-frame carrying N kinds frequency domain ofdm signal includes physical channel signal and reference signal, target
Frequency domain ofdm signal is the physical channel signal in N kind frequency domain ofdm signals, and user equipment obtains the current transmission mode of base station,
The reference signal that target frequency domain ofdm signal associates in present sub-frame under user equipment inquiry current transmission mode, wherein, it is more
Individual physical channel signal can associate with same reference signal, physical channel signal and the transmission power of the reference signal associated
Identical or proportional relation, user equipment determine the RE that the reference signal of association takes in present sub-frame, the ginseng of statistical correlation
The RE of signal occupancy mean power is examined, obtains the target power for the RE that the reference signal of association takes in present sub-frame, should
Target power is pre-set, and can be notified to remove mean power to user equipment, user equipment by the target power by base station
Frequency domain gain of the reference signal associated with target power in present sub-frame, using the frequency domain gain being calculated as mesh
Frequency domain gain of the frequency domain ofdm signal in present sub-frame is marked, such user equipment can use the frequency domain of the reference signal of association
The power for the RE that gain takes to itself and target frequency domain ofdm signal in present sub-frame is adjusted, and reduces calculating mesh
Mark the expense of the frequency domain gain of frequency domain ofdm signal.
Exemplary, current transmission mode is transmission mode 1, and target frequency domain ofdm signal is PDCCH (Physical
Downlink Control Channel, Physical Downlink Control Channel, abbreviation PDCCH) signal, preset set PDCCH signals with
Reference signal associates for CRS (Common Reference Signal, public reference signal, abbreviation CRS), and user equipment is true
Determine after present sub-frame carries PDCCH signals and CRS, to start to calculate frequency domain gains of the CRS in present sub-frame.The process of calculating
Can be：User equipment determines that the quantity for the RE that CRS takes in present sub-frame is 8, and user equipment is calculated in present sub-frame
Above-mentioned 8 RE mean power, obtain CRS default target powers in present sub-frame, user equipment calculate mean power and
The ratio of target power is worth to frequency domain gains of the CRS in present sub-frame, using the frequency domain gain being calculated as PDCCH signals
Frequency domain gain in present sub-frame, user equipment can take according to CRS frequency domain gain to PDCCH signals in present sub-frame
RE power be adjusted, so reduce the calculating process of the frequency domain gain of PDCCH signals, save processing expense.
Optionally, in some embodiments of the invention, it is described to calculate the N kinds frequency domain ofdm signal in the current son
In frame before each self-corresponding frequency domain gain, in addition to：
If the current transmission mode is any one in transmission mode 1 to transmission mode 6, the physics that base station is sent
Down control channel PDCCH signals and Physical Downlink Shared Channel PDSCH (Physical Downlink Shared
Channel, Physical Downlink Shared Channel, abbreviation PDSCH) signal is associated with public reference signal CRS；Wherein N is equal to institute
State the number of species of the frequency domain ofdm signal of base station transmission；
If the current transmission mode is any one in transmission mode 7 to transmission mode 9, base station is sent
PDCCH signals and CRS are associated, and the PDSCH signals and demodulated reference signal DMRS (De that the base station is sent
Modulation Reference Signal, demodulated reference signal, abbreviation DMRS) it is associated；Wherein N is equal to the base station
The number of species of the frequency domain ofdm signal of transmission；
If the current transmission mode is transmission mode 10, PDCCH signals that each base station in P base station is sent and
CRS is associated, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and
For integer, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
Specifically, in LTE communication system, transmission mode, respectively transmission mode 1 during LTE transmission mode includes 10
To transmission mode 10, wherein, transmission mode 1 to transmission mode 9 is that single cell accesses scene, and transmission mode 10 passes for multipoint cooperative
Defeated scene.The reference signal and the type of physical channel signal sent for different transmission modes, base station to user equipment is not
It is identical.Under some transmission modes, physical channel signal and reference signal that base station is sent have correlation on power, related
Property refers to that the two power is equal or proportional relation.User equipment is according to different transmission modes, by the physics with correlation
Channel signal and reference signal are associated, and the specific method of association is：User equipment obtains the current transmission mode of base station, base
Stand and current transmission mode is determined according to the measurement report of user equipment to report, and by transmission mode notifying user equipment, user
Equipment learns the current transmission mode of base station, if the current transmission mode that uses of base station is transmission mode 1 into transmission mode 6
Any one, the physical channel signal such as PDCCH signals and PDSCH signals comes from same base station, PDCCH signals (PCFICH
Signal PHICH signals) and PDSCH signals and CRS send simultaneously, single precoding is not present on PDSCH, it is above-mentioned
The power of physical channel signal and CRS in RE has correlation, and the physical downlink control channel PDCCH that the base station is sent is believed
Number and Physical Downlink Shared Channel PDSCH signals be associated with public reference signal CRS, and by incidence relation keep to this
Ground, the frequency domain gain that user equipment only needs to be calculated according to CRS are adjusted to the power of all RE in present sub-frame.
If the current transmission mode that base station uses is any one in transmission mode 7 to transmission mode 9, PDCCH signals
(PCFICH signals PHICH signals) and PDSCH signals and CRS, DMRS are sent simultaneously.PDSCH signals are identical with DMRS
Precoding, the two power are identical；PDCCH signals and CRS signals have identical precoding, and both power are identical, user equipment
The PDCCH signals and CRS that base station is sent are associated, and the PDSCH signals and demodulated reference signal DMRS that base station is sent
It is associated.When carrying out power adjustment, user equipment can be according to the frequency domain gain that CRS is calculated in present sub-frame
The power for the RE that CRS and PDCCH signals take jointly is adjusted, and the frequency domain gain being calculated according to DMRS is to current
The power for the RE that PDSCH and DMRS in subframe take jointly is adjusted.
Optionally, in some embodiments of the invention, if the current transmission mode that base station uses is transmission mode 10, i.e.,
Coordinated multipoint transmission CoMP scenes, RE corresponding to different physical channel signals may be from different base stations, different base stations pair
Difference power may be larger between the RE answered, and the embodiment of the present invention is adjusted the power of RE corresponding to unlike signal type respectively
It is whole, while the power of RE corresponding to different base station is adjusted respectively, the method for adjustment is specially：
PDCCH signals (PCFICH signals PHICH signals) and PBCH signals and CRS are that binding is sent, above-mentioned physics
Channel signal is identical with CRS power, and the frequency domain gain that user equipment is calculated according to CRS is to CRS, PDCCH signal
RE carries out power adjustment corresponding to (PCFICH signals PHICH signals) and PBCH signals.
PDSCH signals and DMRS are that binding is sent, and both power are identical, the frequency that user equipment is calculated according to DMRS
Domain gain is adjusted to the power of RE corresponding to PDSCH signals and DMRS.
User equipment sends CSIR S (Channel State Information Reference to different base station respectively
Signal, channel state information reference signals) or CSIIMR Channel State Information Interference
Measurement Resource, channel condition information interferometry resource) corresponding to RE power be adjusted.
Exemplary, current transmission mode is transmission mode 10, and P=3 indicates that 3 base stations participate in cooperation transmission, respectively
The RE of present sub-frame, the frequency domain that base station 1 is sent in down direction are used in conjunction with for base station 1, base station 2 and the base station of base station 3,3
The number of species of ofdm signal has 4, respectively PDCCH signals, CRS, CSIR S and CSIIMR；Base station 2 is sent in down direction
The number of species of frequency domain ofdm signal is 4, respectively PDSCH signals, DMRS, CSIR S and CSIIMR；Base station 3 is in down direction
The number of species of the frequency domain ofdm signal of transmission is 4, respectively PDCCH signals, CRS, CSIR S and CSIIMR, according to 3 bases
Total number of species 4+4+4=12 of OFDM frequency-region signals corresponding to standing, present sub-frame is divided into 12 groups, calculated in each group
RE frequency domain gain, the power of the RE in corresponding group is adjusted respectively according to the frequency domain gain being calculated.
Preferably, in multiple frequency domain ofdm signals that each base station is sent, if inquiring the physics with incidence relation
Channel signal and reference signal, using reference signal in this set corresponding RE frequency domain gain as physical signalling signal frequency domain
Gain.For example, in 4 frequency domain ofdm signals sent for base station 1, PDCCH signals and CRS have incidence relation, calculate CRS
The RE frequency domain gain in the group, the frequency domain gain using the frequency domain gain being calculated as PDCCH signals RE in the group.
Optionally, in some embodiments of the invention, the mean power of the statistics M RE specifically includes：
The general power on the M RE is measured, the general power divided by M are obtained into the mean power of the M RE.
Specifically, user equipment measures power of the frequency domain ofdm signal in present sub-frame on corresponding M RE, by M
Power on RE is summed to obtain general power, and general power divided by M are obtained into the mean power on each RE.
It is a kind of schematic diagram that automatic gain adjustment is carried out in present sub-frame provided in an embodiment of the present invention referring to Fig. 2,
Fig. 2 is the location map of the RE that each physical channel signal and reference signal take in present sub-frame 0.According to the color of square from
The shallow order to depth is respectively that PDSCH RE, PDCCH RE, DMRS RE, CSIR S RE and CRS RE, wherein XXX RE represent certain
The RE that individual physical channel signal or reference signal take in present sub-frame 0.Power adjustment method be：
Present sub-frame 0 carry 5 kinds of frequency domain ofdm signals, respectively PDCCH signals, PDSCH signals, DMRS, CISRS and
CRS, user equipment determines the RE numbers of every kind of frequency domain ofdm signal occupancy in present sub-frame 0 as shown in Fig. 2 user equipment is distinguished
Count mean power and target power of every kind of frequency domain ofdm signal in present sub-frame 0 and obtain frequency domain gain, using calculating
To the RE power that is taken to frequency domain ofdm signal of frequency domain gain be adjusted.
For example, DMRS takes 12 RE in the present sub-frame 0, user equipment counts this 12 RE mean power and each
RE target power, DMRS frequency domain gain is obtained according to mean power and target power, existed according to frequency domain Gain tuning DMRS
12 RE power corresponding in present sub-frame 0.The power regulating method of other 4 frequency domain ofdm signals is referred to above-mentioned mistake
Journey, do not repeating herein.
Preferably, in present sub-frame 0 there is the reference signal of association, the physical channel signal in the physical channel signal of carrying
The frequency domain gain of the reference signal of association can be utilized to simplify calculation procedure.Using the transmission mode of base station as transmission mode 1 to biography
Exemplified by any one in defeated pattern 6, user equipment learns CRS according to incidence relation, PDCCH RE in present sub-frame 0,
PDSCH RE and CRS RE power relations are, it is known that user equipment is worth to according to the mean power that CRS is counted and target power ratio
Frequency domain gain, CRS in fig. 2 corresponding RE quantity be 8, user equipment calculates this 8 RE general power, is removed with general power
Mean power is obtained with 8, frequency domain gains of the CRS in present sub-frame 0 is worth to according to the ratio of mean power and target power.
Assuming that each RE of CRS RE statistics mean power is PCRS, each RE target power is PTarget, then for
Each RE frequency domain gain ADAGCF=PCRS/PTarget, will be each current sub when using transmission mode 1 to transmission mode 6 in base station
The power of CRS RE, PDCCH RE and PDSCH RE in frame 0 are multiplied by ADAGCF, to reach adjustment power.
Referring to Fig. 3, a kind of structural representation of the frequency domain automatic gain control equipment provided for the embodiment of the present invention one,
In the embodiment of the present invention, described device includes：Determining module 10, computing module 11 and adjusting module 12.
Determining module 10, for determining that the N kind frequency domain OFDM signals of present sub-frame carrying each account for using
Resource particle RE；N is the integer more than 1；
Computing module 11, for calculating the N kinds frequency domain ofdm signal each self-corresponding frequency domain in the present sub-frame
Gain；
Adjusting module 12, for according to the power that the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated
It is adjusted.
The embodiment of the present invention and embodiment of the method are based on same design, and the technique effect that it brings is also identical, please specifically join
According to the description of embodiment of the method, here is omitted.
Further, Fig. 4 is participated in, a kind of structure of the frequency domain automatic gain control equipment provided for the embodiment of the present invention two
Schematic diagram, in embodiments of the present invention, described device in addition to including determining module 10, computing module 11 and adjusting module 12,
Also include：Relating module 14, radio frequency processing module 15, mode conversion module 16, digital filtering module 17, DAGCT modules 18, go
CP modules 19 and FFT module 20.
Relating module 14, is used for
If the current transmission mode is any one in transmission mode 1 to transmission mode 6, the physics that base station is sent
Down control channel PDCCH signals and Physical Downlink Shared Channel PDSCH signals are associated with public reference signal CRS；Its
Middle N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is any one in transmission mode 7 to transmission mode 9, base station is sent
PDCCH signals and CRS are associated, and the PDSCH signals and demodulated reference signal DMRS that the base station is sent are associated；
Wherein N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is transmission mode 10, PDCCH signals that each base station in P base station is sent and
CRS is associated, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and
For integer, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
Radio frequency processing module 15, the analog radio-frequency signal for the base station to be sent are simulated after carrying out radio frequency processing
Baseband signal.
Analog-to-digital conversion module 16, for obtaining digital base stations signal after the analog baseband signal is carried out into patten transformation.
Digital filtering module 17, for being filtered processing to the digital baseband signal.
DAGCT modules 18, for the signal after filtering process to be carried out into time-domain digital automatic growth control DAGCT.
CP modules 19 are gone, for going cyclic prefix CP to handle the signal after progress DAGCT.
FFT module 20, for by go CP handle after signal carry out Fast Fourier Transform (FFT) FFT after obtain the N kinds frequency
Domain ofdm signal.
Optionally, computing module 11 is specifically used for the target frequency domain ofdm signal association under inquiry current transmission mode
Reference signal；It is the integer more than 1 to determine the M RE that the reference signal of the association takes in the present sub-frame, M；System
The mean power of the M RE is counted, the reference of the association is calculated according to the mean power and default target power
Frequency domain gain of the signal in the present sub-frame；Frequency domain gain is calculated as the target frequency domain ofdm signal using described
Frequency domain gain in the present sub-frame.
Optionally, computing module 11 is used to measure the general power on the M RE, and the general power divided by M are obtained into institute
State M RE mean power.
The embodiment of the present invention and embodiment of the method are based on same design, and the technique effect that it brings is also identical, please specifically join
According to the description of embodiment of the method, here is omitted.
Referring to Fig. 5, a kind of structural representation of the frequency domain automatic gain control equipment provided for the embodiment of the present invention three,
In this implementation, device 1 includes processor 61, memory 62 and communication interface 63, and the quantity of the processor 61 in device 1 can be
One or more, Fig. 5 is by taking a processor as an example.In some embodiments of the present invention, processor 61, memory 62 and communication connect
Mouth 63 can be connected by bus or other modes, in Fig. 5 so that bus connects as an example.
Wherein, batch processing code is stored in memory 62, and processor 61 is used to call the journey stored in memory 62
Sequence code, for performing following operation：
Determine the resource particle RE that the N kind frequency domain OFDM signals of present sub-frame carrying each account for；N is
Integer more than 1；
Calculate the N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame；
Power according to the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated is adjusted.
In some embodiments of the invention, the N kinds frequency domain ofdm signal of the present sub-frame carrying includes reference signal
And/or physical channel signal.
In some embodiments of the invention, the N kinds frequency domain ofdm signal includes reference signal and physical channel signal,
Target frequency domain ofdm signal is the physical channel signal in the N kinds frequency domain ofdm signal,
It is each self-corresponding in the present sub-frame that the processor 61 performs the calculating N kinds frequency domain ofdm signal
Frequency domain gain specifically includes：
Inquire about the reference signal of the target frequency domain ofdm signal association under current transmission mode；
It is the integer more than 1 to determine the M RE that the reference signal of the association takes in the present sub-frame, M；
The mean power of the M RE is counted, according to being calculated the mean power and default target power
Frequency domain gain of the reference signal of association in the present sub-frame；
Using the frequency domain that frequency domain gain is calculated as the target frequency domain ofdm signal in the present sub-frame
Gain.
In some embodiments of the invention, the N kinds frequency domain ofdm signal is calculated described in the computing device in institute
State in present sub-frame before each self-corresponding frequency domain gain, be additionally operable to perform：
If the current transmission mode is any one in transmission mode 1 to transmission mode 6, the physics that base station is sent
Down control channel PDCCH signals and Physical Downlink Shared Channel PDSCH signals are associated with public reference signal CRS；Its
Middle N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is any one in transmission mode 7 to transmission mode 9, base station is sent
PDCCH signals and CRS are associated, and the PDSCH signals and demodulated reference signal DMRS that the base station is sent are associated；
Wherein N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；
If the current transmission mode is transmission mode 10, PDCCH signals that each base station in P base station is sent and
CRS is associated, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and
For integer, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
In some embodiments of the invention, the processor 61 performs the N kind frequency domains of the determination present sub-frame carrying
The resource particle RE that ofdm signal each accounts for；Before N is the integer more than 1, it is additionally operable to perform：
Analog baseband signal is obtained after the analog radio-frequency signal that the base station is sent is carried out into front-end processing radio frequency processing；
Digital base stations signal is obtained after the analog baseband signal is carried out into patten transformation；
Processing is filtered to the digital baseband signal；
Signal after filtering process is subjected to time-domain digital automatic growth control DAGCT；
Cyclic prefix CP is gone to handle the signal after progress DAGCT；
The N kinds frequency domain ofdm signal is obtained after signal after going CP to handle is carried out into Fast Fourier Transform (FFT) FFT.
In some embodiments of the invention, the processor 61 performs the mean power tool of the statistics M RE
Body includes：
The general power on the M RE is measured, the general power divided by M are obtained into the mean power of the M RE.
Implement embodiments of the invention, counted respectively by the different types of frequency domain ofdm signal carried to present sub-frame
Respective frequency domain gain, and to frequency domain ofdm signal, the corresponding RE power in present sub-frame enters using respective frequency domain gain
Row adjustment, can overcome the influence of different types of frequency domain ofdm signal difference power, signal power is adjusted into suitable scope,
Reduce and quantify bit wide.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (ReadOnly Memory, ROM) or random access memory (RandomAccess
Memory, RAM) etc..
The above disclosed power for being only a kind of preferred embodiment of the present invention, the present invention can not being limited with this certainly
Sharp scope, one of ordinary skill in the art will appreciate that realizing all or part of flow of above-described embodiment, and weighed according to the present invention
Profit requires made equivalent variations, still falls within and invents covered scope.
Claims (12)
- A kind of 1. frequency domain auto gain control method, it is characterised in that including：Determine the resource particle RE that the N kind frequency domain OFDM signals of present sub-frame carrying each account for；N be more than 1 integer；Calculate the N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame；Power according to the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated is adjusted.
- 2. the method as described in claim 1, it is characterised in that the N kind frequency domain ofdm signals of the present sub-frame carrying include Reference signal and/or physical channel signal.
- 3. method as claimed in claim 2, it is characterised in that the N kinds frequency domain ofdm signal includes reference signal and physics Channel signal, target frequency domain ofdm signal are the physical channel signal in the N kinds frequency domain ofdm signal,Calculating N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame specifically includes：If inquire the reference signal of the target frequency domain ofdm signal association under current transmission mode；It is the integer more than 1 to determine the M RE that the reference signal of the association takes in the present sub-frame, M；The mean power of the M RE is counted, the association is calculated according to the mean power and default target power Frequency domain gain of the reference signal in the present sub-frame；Using the frequency domain gain that frequency domain gain is calculated as the target frequency domain ofdm signal in the present sub-frame.
- 4. method as claimed in claim 3, it is characterised in that described to calculate the N kinds frequency domain ofdm signal described current In subframe before each self-corresponding frequency domain gain, in addition to：If the current transmission mode is any one in transmission mode 1 to transmission mode 6, the physical down that base station is sent Control channel PDCCH signals and Physical Downlink Shared Channel PDSCH signals are associated with public reference signal CRS；Wherein N etc. In the number of species for the frequency domain ofdm signal that the base station is sent；If the current transmission mode is any one in transmission mode 7 to transmission mode 9, the PDCCH that base station is sent believes Number and CRS be associated, and the PDSCH signals and demodulated reference signal DMRS that the base station is sent are associated；Wherein N etc. In the number of species for the frequency domain ofdm signal that the base station is sent；If the current transmission mode is transmission mode 10, each base station is sent in P base station PDCCH signals and CRS are entered Row association, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and to be whole Number, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
- 5. the method as described in Claims 1-4 any one, it is characterised in that the N kinds frequency for determining present sub-frame carrying The resource particle RE that domain ofdm signal each accounts for；Before N is the integer more than 1, in addition to：The analog radio-frequency signal that base station is sent obtains analog baseband signal after carrying out radio frequency processing；Digital baseband signal is obtained after the analog baseband signal is carried out into patten transformation；Processing is filtered to the digital baseband signal；Signal after filtering process is subjected to time-domain digital automatic growth control DAGCT；Cyclic prefix CP is gone to handle the signal after progress DAGCT；The N kinds frequency domain ofdm signal is obtained after signal after going CP to handle is carried out into Fast Fourier Transform (FFT) FFT.
- 6. the method as described in claim 3 or 4, it is characterised in that the mean power of the statistics M RE is specifically wrapped Include：The general power on the M RE is measured, the general power divided by M are obtained into the mean power of the M RE.
- A kind of 7. frequency domain automatic gain control equipment, it is characterised in that including：Determining module, the resource that the N kind frequency domain OFDM signals for determining present sub-frame carrying each account for Particle RE；N is the integer more than 1；Computing module, for calculating the N kinds frequency domain ofdm signal each self-corresponding frequency domain gain in the present sub-frame；Adjusting module, for being adjusted according to the power that the RE that frequency domain gain takes corresponding frequency domain ofdm signal is calculated It is whole.
- 8. device as claimed in claim 7, it is characterised in that the N kinds frequency domain ofdm signal includes reference signal and/or thing Manage channel signal.
- 9. device as claimed in claim 8, it is characterised in that the N kinds frequency domain ofdm signal includes reference signal and physics Channel signal,The computing module is specifically used for the reference signal that target frequency domain ofdm signal associates under inquiry current transmission mode；It is determined that The M RE that the reference signal of the association takes in the present sub-frame, M are the integer more than 1；Count the M RE's Mean power, the reference signal of the association is calculated described current according to the mean power and default target power Frequency domain gain in subframe；Frequency domain gain is calculated as the target frequency domain ofdm signal in the present sub-frame using described Interior frequency domain gain.
- 10. device as claimed in claim 9, it is characterised in that also include：Relating module, if being any one in transmission mode 1 to transmission mode 6 for the current transmission mode, by base station Physical downlink control channel PDCCH signal and Physical Downlink Shared Channel PDSCH signals and the public reference signal CRS of transmission enter Row association；Wherein N is equal to the number of species for the frequency domain ofdm signal that the base station is sent；If the current transmission mode is any one in transmission mode 7 to transmission mode 9, the PDCCH that base station is sent believes Number and CRS be associated, and the PDSCH signals and demodulated reference signal DMRS that the base station is sent are associated；Wherein N etc. In the number of species for the frequency domain ofdm signal that the base station is sent；If the current transmission mode is transmission mode 10, each base station is sent in P base station PDCCH signals and CRS are entered Row association, and the PDSCH signals and demodulated reference signal DMRS that each base station is sent are associated；Wherein, P >=2 and to be whole Number, N=A1+A2+…+Ai…+AP, 1≤i≤P, AiThe number of species of the frequency domain ofdm signal sent for i-th of base station.
- 11. the device as described in claim 7 to 10 any one, it is characterised in that also include：Radio frequency processing module, the analog radio-frequency signal for base station to be sent obtain analog baseband signal after carrying out radio frequency processing；Analog-to-digital conversion module, for obtaining digital baseband signal after the analog baseband signal is carried out into patten transformation；Digital filtering module, for being filtered processing to the digital baseband signal；DAGCT modules, for the signal after filtering process to be carried out into time-domain digital automatic growth control DAGCT；CP modules are gone, for going cyclic prefix CP to handle the signal after progress DAGCT；FFT module, for by go CP handle after signal carry out Fast Fourier Transform (FFT) FFT after obtain the N kinds frequency-domain OFDM Signal.
- 12. the device as described in claim 9 or 10, it is characterised in that the computing module is used to measure on the M RE General power, the general power divided by M are obtained into the mean power of the M RE.
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| CN113810166B (en) * | 2016-06-09 | 2024-04-26 | Lg电子株式会社 | Method for transmitting and receiving phase noise compensation reference signal and apparatus therefor |
| CN110535795B (en) * | 2018-05-24 | 2021-11-05 | 中兴通讯股份有限公司 | Signal processing method and device |
| CN112187300B (en) * | 2019-07-05 | 2023-06-06 | 中兴通讯股份有限公司 | Gain adjustment control method, device, equipment and computer readable storage medium |
| CN112866162B (en) * | 2021-01-05 | 2022-05-31 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Automatic gain control method, system and medium based on time domain and frequency domain power |
| CN112996096B (en) * | 2021-02-08 | 2023-06-20 | 展讯通信（上海）有限公司 | Automatic gain control method, device, chip and equipment |
| CN116233992A (en) * | 2023-05-08 | 2023-06-06 | 杰创智能科技股份有限公司 | Digital automatic gain control method, digital automatic gain control device, electronic equipment and storage medium |
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| CN1600008A (en) * | 2001-11-30 | 2005-03-23 | 飞思卡尔半导体公司 | Power amplifier transient compensation in OFDM systems |
| WO2008137837A1 (en) * | 2007-05-04 | 2008-11-13 | Amicus Wireless Technology Ltd. | Automatic gain control circuit for mimo ofdm receiver |
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