CN107979392A - A kind of compensation circuit of transmission signal, method and apparatus - Google Patents
A kind of compensation circuit of transmission signal, method and apparatus Download PDFInfo
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- CN107979392A CN107979392A CN201711229550.0A CN201711229550A CN107979392A CN 107979392 A CN107979392 A CN 107979392A CN 201711229550 A CN201711229550 A CN 201711229550A CN 107979392 A CN107979392 A CN 107979392A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/32—Reducing cross-talk, e.g. by compensating
Abstract
The invention discloses a kind of compensation circuit of transmission signal, method and apparatus, it is related to electronic technology field, improves the immunity to interference of the transmission signal of 2.5G/5G network interfaces.Concrete scheme is：The compensation circuit of transmission signal includes detection module, control module, first compensating module and the second compensating module, wherein, detection module, for the configured transmission of detection of transmitted signals and the configured transmission of reception signal, and the configured transmission of the configured transmission for sending signal and reception signal is transmitted to control module, control module, for sending first control signal to the first compensating module according to the configured transmission for sending signal, and second control signal is sent to the second compensating module according to the configured transmission for receiving signal, first compensating module, signal is sent for being compensated according to first control signal, second compensating module, signal is received for being compensated according to second control signal.The present invention is used for during improving communication network interface immunity to interference.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of compensation circuit of transmission signal, method and apparatus.
Background technology
With wireless renewal application, the speed that hot spot is accessed in part has been over 1Gbps, and is based on 2.5G/
(Base-T is a kind of LAN (Local Area Network, LAN) standard to be worked with bp rate to 5GBase-T, it is usual
It is referred to as Fast Ethernet) the communication network interface of agreement is (referred to as：2.5G/5G network interfaces) because common hundred meter of five class electricity can be continued to use
Cable bundles carry out transmission signal, have begun to increasingly rise.
But since the transmission range that in traditional five class core of a cable, 2.5G/5GBase-T standards are supported is 100 meters,
And 100 meters of application has been occurred more than in existing environment, therefore, when 2.5G/5G network interfaces are at hundred meters or more than hundred meter five class is electric
In use, transmission signal can be subject to the near-end crosstalk between the insertion loss and core of a cable of five class core of a cable in cable bundles
Disturb and be attenuated with the influence of far-end cross talk etc..
Therefore, how to improve the immunity to interference of the transmission signal of 2.5G/5G network interfaces is current urgent problem to be solved.
The content of the invention
The embodiment of the present invention provides a kind of compensation circuit of transmission signal, method and apparatus, improves 2.5G/5G network interfaces
Transmission signal immunity to interference.
To reach above-mentioned purpose, the embodiment of the present invention adopts the following technical scheme that：
First aspect, there is provided a kind of compensation circuit of transmission signal, the compensation circuit of the transmission signal can include detection
Module, control module, the first compensating module and the second compensating module.Wherein, the output terminal of detection module and control module is defeated
Enter end connection, for the configured transmission of detection of transmitted signals and the configured transmission of reception signal, and the transmission of signal will be sent
Parameter and the configured transmission of reception signal are transmitted to control module.The output terminal of control module respectively with the first compensating module and
Two compensating modules connect, for sending first control signal to the first compensating module according to the configured transmission for sending signal, and
Configured transmission according to signal is received sends second control signal to the second compensating module.First compensating module, for according to
The compensation of one control signal sends signal.Second compensating module, signal is received for being compensated according to second control signal.
In this way, when 2.5G/5G network interfaces continue to use hundred meter of five common class core of a cable and carry out transmission signal, due to of the invention real
The compensation circuit of the transmission signal of example offer is provided, can be according to the configured transmission of current transmission signal, in advance to transmission signal
Compensate, decay caused by compensate transmission signal due to being subject to insertion loss, near-end cross, far-end cross talk etc. to influence, from
And improve the immunity to interference of the transmission signal of 2.5G/5G network interfaces.
With reference to first aspect, in a kind of possible implementation, configured transmission includes impedance, insertion loss, near-end crosstalk
Disturb and far-end cross talk.
With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, first compensates mould
Block can include at least one switch, first voltage compensating module and the first filtering process module.Wherein, the output of control module
End respectively with it is at least one switch connect, for according to send signal impedance, insertion loss, near-end cross and far-end cross talk,
Obtain send signal transmission characteristic numerical value, and according to the numerical value of transmission characteristic, the communication network interface currently supported and in advance
First correspondence of storage, obtains the first gating corresponding with the numerical value of transmission characteristic and the communication network interface currently supported and configures
Information, and first control signal is sent according to each switch of the first gating configuration information at least one switch, with control
The on or off each switched at least one switch.Wherein, the first correspondence includes sending the transmission characteristic of signal
Number range, the communication network interface currently supported and corresponding gating configuration information, which includes at least one
Each switch is conducting state or cut-off state in a switch.At this time, correspondingly, at least one switch, for according to the first control
Signal conduction processed or cut-off.First voltage compensating module, for according at least one switch conduction or cut-off after as a result, to hair
The number of delivering letters carries out voltage compensation.First filtering process module, for according at least one switch conduction or cut-off after as a result, right
Send signal and be filtered processing.
With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, second compensates mould
Block can include at least one switch, second voltage compensating module and the second filtering process module.Wherein, the output of control module
End respectively with it is at least one switch connect, for according to receive signal impedance, insertion loss, near-end cross and far-end cross talk,
Obtain receive signal transmission characteristic numerical value, and according to the numerical value of transmission characteristic, the communication network interface currently supported and in advance
Second correspondence of storage, obtains the second gating corresponding with the numerical value of transmission characteristic and the communication network interface currently supported and configures
Information, and second control signal is sent according to each switch of the second gating configuration information at least one switch, with control
The on or off each switched at least one switch.Wherein, the second correspondence includes receiving the transmission characteristic of signal
Number range, the communication network interface currently supported and corresponding gating configuration information, which includes at least one
Each switch is conducting state or cut-off state in a switch.At this time, correspondingly, at least one switch, for according to the second control
Signal conduction processed or cut-off.Second voltage compensating module, for according at least one switch conduction or cut-off after as a result, docking
The collection of letters number carries out a voltage compensation.Second filtering process module, for according at least one switch conduction or cut-off after as a result, right
Receive signal and be filtered processing.
With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, switch can be
Dual gate FET.The output terminal of control module and the control terminal of dual gate FET connect, for being sent out to dual gate FET
Low level is sent, to control dual gate FET to end；Or, for sending high level to dual gate FET, to control double grid field
Effect pipe turns on.
Second aspect, there is provided a kind of compensation method of transmission signal, is applied in first aspect or the possible reality of first aspect
In the compensation circuit for applying the transmission signal of mode, this method can include：The configured transmission of detection module detection of transmitted signals and
The configured transmission of signal is received, and the configured transmission of the configured transmission for sending signal and reception signal is transmitted to control mould
Block.Control module sends first control signal according to the configured transmission for sending signal to the first compensating module, and believes according to receiving
Number configured transmission to the second compensating module send second control signal.First compensating module is compensated according to first control signal and sent out
The number of delivering letters.Second compensating module compensates according to second control signal and receives signal.
In this way, when 2.5G/5G network interfaces continue to use hundred meter of five common class core of a cable and carry out transmission signal, due to of the invention real
The compensation method of the transmission signal of example offer is provided, can be according to the configured transmission of current transmission signal, in advance to transmission signal
Compensate, decay caused by compensate transmission signal due to being subject to insertion loss, near-end cross, far-end cross talk etc. to influence, from
And improve the immunity to interference of the transmission signal of 2.5G/5G network interfaces.
With reference to second aspect, in a kind of possible implementation, configured transmission includes impedance, insertion loss, near-end crosstalk
Disturb and far-end cross talk.
With reference to second aspect and above-mentioned possible implementation, in alternatively possible implementation, the first compensation mould
Block can include at least one switch, first voltage compensating module and the first filtering process module.At this time, control module is according to hair
The configured transmission for the number of delivering letters sends first control signal to the first compensating module, specifically includes：Control module is according to transmission signal
Impedance, insertion loss, near-end cross and far-end cross talk, obtain sending the numerical value of the transmission characteristic of signal, and according to the transmission
The numerical value of characteristic, the communication network interface currently supported and the first correspondence prestored, obtain the number with the transmission characteristic
Value and the corresponding first gating configuration information of the communication network interface currently supported, are opened according to the first gating configuration information at least one
Each switch in the Central Shanxi Plain sends first control signal, to control the on or off each switched at least one switch.Wherein,
First correspondence includes sending number range, the communication network interface currently supported and the corresponding choosing of the transmission characteristic of signal
Logical configuration information, it is conducting state or cut-off state which, which includes each switch at least one switch,.Accordingly
, the first compensating module compensates according to first control signal and sends signal, specifically includes：First voltage compensating module is according at least
One switch conduction or cut-off after as a result, to send signal carry out voltage compensation, the first filtering process module is according at least one
A switch conduction or cut-off after as a result, to send signal be filtered processing.
With reference to second aspect and above-mentioned possible implementation, in alternatively possible implementation, the second compensation mould
Block can include at least one switch, second voltage compensating module and the second filtering process module.At this time, control module is according to connecing
The configured transmission of the collection of letters number sends second control signal to the second compensating module, specifically includes：Control module is according to reception signal
Impedance, insertion loss, near-end cross and far-end cross talk, obtain receiving the numerical value of the transmission characteristic of signal, and special according to transmission
Property numerical value, the communication network interface currently supported and the second correspondence prestored, obtain with the numerical value of transmission characteristic and
The corresponding second gating configuration information of communication network interface currently supported, according to the second gating configuration information at least one switch
Each switch send second control signal, to control the on or off each switched at least one switch.Wherein, second
Number range, the communication network interface currently supported and the corresponding gating that correspondence includes the transmission characteristic of reception signal are matched somebody with somebody
Confidence ceases, and it is conducting state or cut-off state which, which includes each switch at least one switch,.Correspondingly, the
Two compensating modules compensate according to second control signal and receive signal, specifically include：Second voltage compensating module is according at least one
A number progress voltage compensation, the second filtering process module after switch conduction or cut-off as a result, docking is collected mail are opened according at least one
Close after on or off as a result, the docking collection of letters number is filtered processing.
The third aspect, there is provided a kind of interchanger, the interchanger can include：It is possible such as first aspect or first aspect
The compensation circuit of transmission signal in implementation.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of schematic diagram of the compensation circuit of transmission signal provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the compensation circuit of another transmission signal provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the compensation circuit of another transmission signal provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the compensation circuit of another transmission signal provided in an embodiment of the present invention；
Fig. 5 is a kind of equivalent circuit provided in an embodiment of the present invention；
Fig. 6 is a kind of equivalent circuit provided in an embodiment of the present invention；
Fig. 7 is a kind of flow chart of the compensation method of transmission signal provided in an embodiment of the present invention；
Fig. 8 is a kind of interchanger provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution 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, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of compensation circuit of transmission signal provided in an embodiment of the present invention.As shown in Figure 1, the transmission signal
Compensation circuit can include detection module 101, control module 102, the first compensating module 103 and the second compensating module 104.
Wherein, the output terminal of detection module 101 is connected with the input terminal of control module 102, for detection of transmitted signals
Configured transmission and the configured transmission for receiving signal, and the configured transmission for sending signal and the configured transmission for receiving signal are transmitted
To control module 102.
The output terminal of control module 102 is connected with the first compensating module 103 and the second compensating module 104 respectively, for root
First control signal is sent to the first compensating module 103 according to the configured transmission for sending signal, and according to the transmission for receiving signal
Parameter sends second control signal to the second compensating module 104.
First compensating module 103, signal is sent for being compensated according to first control signal, the transmission letter after output compensation
Number.
Second compensating module 104, signal is received for being compensated according to second control signal, the reception letter after output compensation
Number.
In this way, when 2.5G/5G network interfaces continue to use hundred meter of five common class core of a cable come transmission signal (signal include send
Signal and reception signal) when, can be according to current transmission due to the compensation circuit of transmission signal provided in an embodiment of the present invention
The configured transmission of signal, in advance compensates transmission signal, to compensate transmission signal due to being subject to insertion loss, near-end crosstalk
Disturb, decay caused by far-end cross talk etc. influences, so as to improve the immunity to interference of the transmission signal of 2.5G/5G network interfaces.
In embodiments of the present invention, further, configured transmission can include impedance, insertion loss, near-end cross and remote
Crosstalk is held, and impedance and insertion loss are used for the signal quality of indication signal, near-end cross and far-end cross talk are used for indication signal
Alien crosstalk.Wherein, insertion loss refers to the load in the somewhere of Transmission system, occurred due to the insertion of element or device
The loss of power, it is expressed as after the upper received power of load before the element or device insertion and insertion institute in same load
Ratio of the power received in units of decibel；Near-end cross refers to be coupled to another adjacent lines in the signal of transmitting terminal transmission
To receiving terminal caused by interference；Far-end cross talk refer to as core of a cable link near-end to other line to caused by upper signal do
Disturb.
In embodiments of the present invention, further, impedance, insertion loss, near-end cross and distal end are included in configured transmission
On the basis of crosstalk, as shown in Fig. 2, the first compensating module 103 can include at least one switch 1031, first voltage compensation mould
1032 and first filtering process module 1033 of block.
Wherein, the output terminal of control module 102 is connected with least one switch 1031 respectively, for according to transmission signal
Impedance, insertion loss, near-end cross and far-end cross talk, using equation below：
The numerical value for the transmission characteristic for sending signal is calculated, wherein, m is transmission characteristic, Ka, Kb、Kc、KdRespectively hinder
Anti- weighted factor, insertion loss weighted factor, near-end cross weighted factor and far-end cross talk weighted factor, Rn, In, Nn, Fn points
Not Wei detection module detect impedance, insertion loss, near-end cross, far-end cross talk, R0、I0、N0、F0When respectively unloaded
Impedance, insertion loss, near-end cross, far-end cross talk, Rh、Ih、Nh、FhRespectively the impedance of hundred meter of five class core of a cable of standard, insert
Enter loss, near-end cross, far-end cross talk.Then according to the numerical value for the transmission characteristic being calculated, the communication network currently supported
Mouth and the number range, present communications network interface and the corresponding gating that include the transmission characteristic for sending signal prestored
First correspondence of configuration information, obtains the first choosing corresponding with the numerical value of the transmission characteristic and the communication network interface currently supported
Lead to configuration information, it be conducting state or cut-off that each switch at least one switch 1031 can be included in the gating configuration information
State.Further according to the first gating configuration information of acquisition the first control letter is sent at least one each switch switched in 1031
Number, to control the on or off each switched at least one switch 1031.
At this time, correspondingly, at least one switch 1031, for according to first control signal on or off.
First voltage compensating module 1032, for according to it is at least one switch 1031 on or off after as a result, to hair
The number of delivering letters carries out voltage compensation, decay caused by sending signal due to being influenced be subject to insertion loss with compensated in advance.
First filtering process module 1033, for according to it is at least one switch 1031 on or off after as a result, to hair
The number of delivering letters is filtered processing, to eliminate the interference that sends signal and can be subject in advance.
In embodiments of the present invention, further, impedance, insertion loss, near-end cross and distal end are included in configured transmission
On the basis of crosstalk, as shown in figure 3, the second compensating module 104 can include at least one switch 1041, second voltage compensation mould
1042 and second filtering process module 1043 of block.
Wherein, the output terminal of control module 102 is connected with least one switch 1041 respectively, for according to reception signal
Impedance, insertion loss, near-end cross and far-end cross talk, using above-mentioned formula (1), are calculated the transmission characteristic of reception signal
Numerical value, and according to the numerical value for the transmission characteristic being calculated, the communication network interface currently supported and what is prestored include
The communication network interface for receive the number range of the transmission characteristic of signal, currently supporting and the second couple of corresponding gating configuration information
It should be related to, obtain the second gating configuration information corresponding with the numerical value of the transmission characteristic and the communication network interface currently supported, the choosing
It is conducting state or cut-off state that can include each switch at least one switch 1041 in logical configuration information.Further according to acquisition
Each switch of the second gating configuration information at least one switch 1041 send second control signal, with control at least one
The on or off each switched in a switch 1041.
At this time, correspondingly, at least one switch 1041, for according to second control signal on or off.
Second voltage compensating module 1042, for according to it is at least one switch 1041 on or off after as a result, docking
The collection of letters number carries out a voltage compensation, decay caused by sending signal due to being influenced be subject to insertion loss with compensated in advance.
Second filtering process module 1043, for according to it is at least one switch 1041 on or off after as a result, docking
The collection of letters number is filtered processing, to eliminate the interference that receives signal and can be subject in advance.
In embodiments of the present invention, further, switch can be dual gate FET.The output terminal of control module 102
It is connected with the control terminal of dual gate FET, for sending low level to dual gate FET, to control dual gate FET to cut
Only；Or, for sending high level to dual gate FET, to control dual gate FET to turn on.
In embodiments of the present invention, further, in order to protect dual gate FET, at least one switch 1031 and at least
One switch 1041 can also include at least one resistance respectively, and one end of each resistance and the source electrode of dual gate FET connect
Connect, other end ground connection.
In embodiments of the present invention, further, first voltage compensating module 1032 and second voltage compensating module 1042
It can include at least one resistance respectively, alternatively, at least one resistance and power supply can be included respectively, alternatively, can wrap respectively
Include power supply.
In embodiments of the present invention, further, the first filtering process module 1033 and the second filtering process module 1043
It can include at least one capacitance respectively, alternatively, at least one inductance and at least one capacitance can be included respectively, alternatively, can
To include at least one inductance respectively.
It should be noted that in embodiments of the present invention, the first correspondence and the second correspondence can be according to reality
Situation is pre-configured in control module 102.
For the ease of the understanding of those skilled in the art, compensation circuit of the present invention by following embodiments to transmission signal
It is illustrated.
Exemplary, detection module 101 is analog-digital converter (Analog to Digital Converter, ADC).Control
Molding block 102 is Complex Programmable Logic Devices (Complex Programmable Logic Device, CPLD).First mends
At least one switch 1031 that repaying module 103 includes includes 6 dual gate FETs, respectively dual gate FET M1, M2,
M3, M4, M5 and M6, and resistance R4, R5 and R7.First voltage compensating module 1032 includes power supply P1, and resistance R1, R6 and
R8.First filtering process module 1033 includes inductance L1, L2 and L4, and capacitance C1.Second compensating module 104 is included at least
One switch 1041 includes 6 dual gate FETs, respectively dual gate FET M7, M8, M9, M10, M11 and M12, and
Resistance R10, R13 and R15.Second voltage compensating module 1042 includes power supply P2, and resistance R2, R3, R9, R11, R12 and
R14.Second filtering process module 1043 includes inductance L3 and L5, and capacitance C2 and C3.Specific circuit diagram is as shown in Figure 4.
Signal is sent since the first compensating module 103 compensates, the principle phase for receiving signal is compensated with the second compensating module 104
Together, therefore the embodiment of the present invention is illustrated by the first compensating module 103 to sending exemplified by signal compensates herein.
For example, it is assumed that the first correspondence prestored in CPLD is as shown in table 1.
Table 1
Wherein, as shown in table 1, when the number range for sending the transmission characteristic of signal is (0,1), show to send the biography of signal
The defeated voltage compensation within hundred meters, sending signal at this time is 0.When scope is (1,3), the transmission for showing to send signal is 100
Rice is between 110 meters.When scope is (3,7), the transmission for showing to send signal is between 110 meters to 130 meters.For sending signal
The number range of transmission characteristic may be referred to calculation of the prior art with sending the relation of transmission range of signal, this
Details are not described herein for inventive embodiments.
So, CPLD can according to detect transmission signal impedance, insertion loss, near-end cross and far-end cross talk,
The numerical value for the transmission characteristic for sending signal is calculated, it is assumed that the numerical value of the transmission characteristic is 2.5, and assumes currently to support logical
Letter network interface is 2.5G, then CPLD can be (1,3) according to the scope where the numerical value of transmission characteristic, the communication network interface currently supported
2.5G, obtains corresponding first apolegamy configuration information, and according to the first gating configuration information, is sent out respectively to M1, M2, M3, M5, M6
High level is sent, to control M1, M2, M3, M5, M6 to turn on, and low level is sent to M4, to control M4 to end.
At this time, turn in M1, M2, M3, M5, M6, after M4 cut-offs, M1, M2, M3, M5, M6 of conducting can be considered as short
Road, the M4 of cut-off are considered as open circuit, and the equivalent circuit diagram of Fig. 4 is as shown in Figure 5 at this time., can be first by the first compensating module based on Fig. 5
Inductance and capacitance in 103 remove, and obtain M1, M2, M3, M5, M6 conducting, first voltage compensating module 1032 after M4 cut-offs
Equivalent circuit diagram, as shown in Figure 6.At this time, if the input voltage for sending signal is V1, first voltage compensating module 1032 is right
The output voltage sent after signal progress voltage compensation is V1+P1.
And turned in M1, M2, M3, M5, M6, after M4 cut-offs, L1, L2 and L4 star-like connection, therefore total inductance L=
(L1+L2) * L4/ (L1+L2+L4), then the first filtering process module 1033 is f=1/2 π * to the filtering process for sending signal
(2*L* ω2*C)1/2.Wherein, ω is the angular frequency value that 2.5G is operated in 100MHz, and L is the value of total inductance, and C is C1's
Value.
It should be noted that in embodiments of the present invention, since the scope of the working frequency of the communication network interface of 2.5G is
[0MHZ, 100MHZ], the scope of the working frequency of the communication network interface of 5G is [0MHZ, 200MHZ], therefore can be according to formula：f
=1/2 π * (2*L* ω2* C)1/2, in the case of the scope of the f of known communication network interface and ω, calculate the numerical value model of LC
Enclose, and the value of a LC is determined from the scope, so as to set the first filtering process mould that disclosure satisfy that requirement according to the value of LC
Block 1033.
And first voltage compensating module 1032 is required to compensate the corresponding voltage for sending signal.Specifically, when transmission
When the number range of the transmission characteristic of signal is (1,3), the transmission for showing to send signal is between 100 meters to 110 meters, due to mark
The scope of the resistance requirements of accurate hundred meter of five class core of a cable is：22 ohm -25 ohm, i.e. every meter of impedance is 0.22 ohm -0.25
Ohm, calculates, 0.22 ohm and 0.25 ohm is multiplied by respectively by 110 meters in proportion, obtains scope as the transmission signal of (1,3)
The impedance ranges of the corresponding core of a cable of transmission characteristic are 22 ohm -27.5 ohm, and at this time, first voltage compensating module 1032 needs
It can compensate for 22 ohm -27.5 ohm of voltage.Similar, scope is corresponding for the transmission characteristic of the transmission signal of (3,7)
The impedance ranges of core of a cable are 27.5 ohm -32.5 ohm, and at this time, first voltage compensating module 1032 is required to compensate
27.5 ohm -32.5 ohm of voltage.In embodiments of the present invention, using send signal transmission characteristic number range as (1,
3) when, first voltage compensating module 1032 illustrates exemplified by the setting to the voltage compensation value P1 for sending signal.
For example, it is assumed that present impedance and insertion loss that CPLD is detected are 26.5 ohm, due to sending the input of signal
The corresponding impedances of voltage V1 are 22 ohm -25 ohm, therefore can be according to formula：V1/22=(V1+P1min)/26.5, V1/25
=(V1+P1max)/26.5, calculate the scope (P1 for the voltage P1 for needing to compensatemin, P1max).Similarly, according to right with scope (1,3)
The scope of a P1, and the scope of all P1 can be calculated in each resistance in the range of 22 ohm -27.5 ohm answered
Intersection is had, at this time, by taking any one P1 in intersection, to cause P1 to disclosure satisfy that to every in 22 ohm -27.5 ohm
The voltage compensation of a resistance.
Fig. 7 is a kind of compensation method of transmission signal provided in an embodiment of the present invention, applied to any institute in such as Fig. 1-Fig. 4
The compensation circuit for the transmission signal stated, as shown in fig. 7, this method includes：
201st, the configured transmission of detection module detection of transmitted signals and the configured transmission of reception signal, and signal will be sent
Configured transmission and receive signal configured transmission be transmitted to control module.
202nd, control module sends first control signal, and root according to the configured transmission for sending signal to the first compensating module
According to the configured transmission for receiving signal second control signal is sent to the second compensating module.
203rd, the first compensating module is compensated according to first control signal sends signal, and the second compensating module is according to the second control
Signal compensation receives signal.
In this way, when 2.5G/5G network interfaces continue to use hundred meter of five common class core of a cable and carry out transmission signal, due to of the invention real
The compensation method of the transmission signal of example offer is provided, can be according to the configured transmission of current transmission signal, in advance to transmission signal
Compensate, decay caused by compensate transmission signal due to being subject to insertion loss, near-end cross, far-end cross talk etc. to influence, from
And improve the immunity to interference of the transmission signal of 2.5G/5G network interfaces.
Fig. 8 is a kind of interchanger provided in an embodiment of the present invention, as shown in figure 8, the interchanger can include：Such as Fig. 1-figure
The compensation circuit of any transmission signal in 4.
Interchanger provided in an embodiment of the present invention includes the compensation circuit of said transmission signal, thus can reach with it is above-mentioned
The identical effect of the compensation circuit of transmission signal.
In several embodiments provided herein, it should be understood that disclosed terminal and method, can pass through it
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical by some interfaces, device or unit
Letter connection, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
In network unit.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That the independent physics of unit includes, can also two or more units integrate in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the portion of each embodiment the method for the present invention
Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, ROM), with
Machine access memory (Random Access Memory, RAM), magnetic disc or CD etc. are various can be with Jie of store program codes
Matter.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical solution spirit and
Scope.
Claims (10)
- A kind of 1. compensation circuit of transmission signal, it is characterised in that including detection module, control module, the first compensating module and Second compensating module, wherein：The output terminal of the detection module is connected with the input terminal of the control module, the configured transmission for detection of transmitted signals With the configured transmission for receiving signal, and the configured transmission transmission by the configured transmission of the transmission signal and the reception signal To the control module；The output terminal of the control module is connected with first compensating module and second compensating module respectively, for basis The configured transmission for sending signal sends first control signal to first compensating module, and according to the reception signal Configured transmission to second compensating module send second control signal；First compensating module, for compensating the transmission signal according to the first control signal；Second compensating module, for compensating the reception signal according to the second control signal.
- 2. compensation circuit according to claim 1, it is characterised in that the configured transmission includes impedance, insertion loss, near Hold crosstalk and far-end cross talk.
- 3. compensation circuit according to claim 2, it is characterised in that first compensating module includes at least one open Pass, first voltage compensating module and the first filtering process module, wherein：The output terminal of the control module is connected with least one switch respectively, for the resistance according to the transmission signal Anti-, insertion loss, near-end cross and far-end cross talk, obtain the numerical value of the transmission characteristic of the transmission signal, and according to the biography The numerical value of defeated characteristic, the communication network interface currently supported and the first correspondence prestored, obtain and the transmission characteristic Numerical value and the corresponding first gating configuration information of the communication network interface currently supported, according to the described first gating configuration information Each switch at least one switch sends the first control signal, every at least one switch to control The on or off of a switch；First correspondence includes sending the number range of the transmission characteristic of signal, current branch The communication network interface and corresponding gating configuration information held, the gating configuration information include each at least one switch Switch as conducting state or cut-off state；At least one switch, for according to the first control signal on or off；The first voltage compensating module, for according at least one switch conduction or cut-off after as a result, to the hair The number of delivering letters carries out voltage compensation；The first filtering process module, for according at least one switch conduction or cut-off after as a result, to the hair The number of delivering letters is filtered processing.
- 4. compensation circuit according to claim 2, it is characterised in that second compensating module includes at least one open Pass, second voltage compensating module and the second filtering process module, wherein：The output terminal of the control module is connected with least one switch respectively, for the resistance according to the reception signal Anti-, insertion loss, near-end cross and far-end cross talk, obtain the numerical value of the transmission characteristic of the reception signal, and according to the biography The numerical value of defeated characteristic, the communication network interface currently supported and the second correspondence prestored, obtain and the transmission characteristic Numerical value and the corresponding second gating configuration information of the communication network interface currently supported, according to the described second gating configuration information Each switch at least one switch sends the second control signal, every at least one switch to control The on or off of a switch；Second correspondence includes receiving the number range of the transmission characteristic of signal, current branch The communication network interface and corresponding gating configuration information held, the gating configuration information include each at least one switch Switch as conducting state or cut-off state；At least one switch, for according to the second control signal on or off；The second voltage compensating module, for according at least one switch conduction or cut-off after as a result, being connect to described The collection of letters number carries out a voltage compensation；The second filtering process module, for according at least one switch conduction or cut-off after as a result, being connect to described The collection of letters number is filtered processing.
- 5. the compensation circuit according to claim 3 or 4, it is characterised in that the switch is dual gate FET, the control The output terminal of molding block is connected with the control terminal of the dual gate FET, for sending low electricity to the dual gate FET It is flat, to control the dual gate FET to end；Or, for sending high level to the dual gate FET, with described in control Dual gate FET turns on.
- 6. a kind of compensation method of transmission signal, it is characterised in that apply in any transmission signals of claim 1-5 In compensation circuit, the described method includes：The configured transmission of detection module detection of transmitted signals and the configured transmission for receiving signal, and the biography by the transmission signal Defeated parameter and the configured transmission for receiving signal are transmitted to control module；The control module sends first control signal, and root according to the configured transmission of the transmission signal to the first compensating module According to the configured transmission of the reception signal second control signal is sent to the second compensating module；First compensating module compensates the transmission signal according to the first control signal；Second compensating module compensates the reception signal according to the second control signal.
- 7. according to the method described in claim 6, it is characterized in that, the configured transmission includes impedance, insertion loss, near-end crosstalk Disturb and far-end cross talk.
- 8. the method according to the description of claim 7 is characterized in that first compensating module includes at least one switch, the One voltage compensation module and the first filtering process module；The control module sends first control signal according to the configured transmission of the transmission signal to the first compensating module, specifically Including：The control module obtains the hair according to impedance, insertion loss, near-end cross and the far-end cross talk of the transmission signal The numerical value of the transmission characteristic for the number of delivering letters, and deposit according to the numerical value of the transmission characteristic, the communication network interface currently supported and in advance First correspondence of storage, obtains and is selected with the numerical value of the transmission characteristic and the communication network interface corresponding first currently supported Logical configuration information, described first is sent according to each switch of the described first gating configuration information at least one switch Control signal, to control the on or off each switched at least one switch；First correspondence includes Send number range, the communication network interface currently supported and the corresponding gating configuration information of the transmission characteristic of signal, the choosing It is conducting state or cut-off state that logical configuration information, which includes each switch at least one switch,；Correspondingly, first compensating module compensates the transmission signal according to the first control signal, specifically include：The first voltage compensating module according at least one switch conduction or cut-off after as a result, to the transmission signal Carry out voltage compensation；The first filtering process module according at least one switch conduction or cut-off after as a result, to institute State transmission signal and be filtered processing.
- 9. the method according to the description of claim 7 is characterized in that second compensating module includes at least one switch, the Two voltage compensation modules and the second filtering process module；The control module sends second control signal according to the configured transmission of the reception signal to the second compensating module, specifically Including：The control module obtains described connect according to impedance, insertion loss, near-end cross and the far-end cross talk of the reception signal The numerical value of the transmission characteristic of the collection of letters number, and deposit according to the numerical value of the transmission characteristic, the communication network interface currently supported and in advance Second correspondence of storage, obtains and is selected with the numerical value of the transmission characteristic and the communication network interface corresponding second currently supported Logical configuration information, described second is sent according to each switch of the described second gating configuration information at least one switch Control signal, to control the on or off each switched at least one switch；Second correspondence includes Receive number range, the communication network interface currently supported and the corresponding gating configuration information of the transmission characteristic of signal, the choosing It is conducting state or cut-off state that logical configuration information, which includes each switch at least one switch,；Correspondingly, second compensating module compensates the reception signal according to the second control signal, specifically include：The second voltage compensating module according at least one switch conduction or cut-off after as a result, to the reception signal Carry out voltage compensation；The second filtering process module according at least one switch conduction or cut-off after as a result, to institute State reception signal and be filtered processing.
- 10. a kind of interchanger, it is characterised in that include the compensation circuit of the transmission signal any one of claim 1-5.
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| CN112019237A (en) * | 2020-07-29 | 2020-12-01 | 苏州浪潮智能科技有限公司 | Transmission line crosstalk calibration device and method based on electronic equipment |
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| CN107979392B (en) | 2021-11-16 |
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