CN107979392B - Compensation circuit, method and equipment for transmission signal - Google Patents
Compensation circuit, method and equipment for transmission signal Download PDFInfo
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- CN107979392B CN107979392B CN201711229550.0A CN201711229550A CN107979392B CN 107979392 B CN107979392 B CN 107979392B CN 201711229550 A CN201711229550 A CN 201711229550A CN 107979392 B CN107979392 B CN 107979392B
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Abstract
The invention discloses a compensation circuit, a method and equipment for transmission signals, relates to the technical field of electronics, and improves the noise immunity of the transmission signals of a 2.5G/5G network port. The specific scheme is as follows: the compensation circuit of the transmission signal comprises a detection module, a control module, a first compensation module and a second compensation module, wherein the detection module is used for detecting the transmission parameter of the transmission signal and the transmission parameter of the receiving signal and transmitting the transmission parameter of the transmission signal and the transmission parameter of the receiving signal to the control module, the control module is used for transmitting a first control signal to the first compensation module according to the transmission parameter of the transmission signal and transmitting a second control signal to the second compensation module according to the transmission parameter of the receiving signal, the first compensation module is used for compensating the transmission signal according to the first control signal, and the second compensation module is used for compensating the receiving signal according to the second control signal. The method and the device are used for improving the noise immunity of the communication network port.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a compensation circuit, a method, and an apparatus for transmitting a signal.
Background
With the wireless update application, the rate of partial access hot spots has exceeded 1Gbps, and a communication Network port (abbreviated as 2.5G/5G Network port) based on 2.5G/5GBase-T (Base-T is a Local Area Network (LAN) standard operating at bps, which is commonly referred to as fast ethernet) protocol has started to be increasingly popular because it can transmit signals along the ordinary cable harness of the five-category-hundreds-meters.
However, since the transmission distance supported by the 2.5G/5GBase-T standard is 100 meters in the conventional five-type cable harness, and applications exceeding 100 meters have appeared in the existing environment, when the 2.5G/5G portal is used in the five-type cable harness of hundreds of meters or more, the transmission signal is attenuated by the insertion loss of the five-type cable harness, the near-end crosstalk and the far-end crosstalk between the cable harnesses, and the like.
Therefore, how to improve the immunity of the transmission signal of the 2.5G/5G network port is an urgent problem to be solved at present.
Disclosure of Invention
Embodiments of the present invention provide a compensation circuit, a method, and an apparatus for a transmission signal, which improve the immunity to interference of a transmission signal of a 2.5G/5G network port.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, a compensation circuit for a transmission signal is provided, which may include a detection module, a control module, a first compensation module, and a second compensation module. The output end of the detection module is connected with the input end of the control module and used for detecting the transmission parameters of the sending signals and the transmission parameters of the receiving signals and transmitting the transmission parameters of the sending signals and the transmission parameters of the receiving signals to the control module. The output end of the control module is respectively connected with the first compensation module and the second compensation module, and is used for sending a first control signal to the first compensation module according to the transmission parameter of the sending signal and sending a second control signal to the second compensation module according to the transmission parameter of the receiving signal. And the first compensation module is used for compensating the sending signal according to the first control signal. And the second compensation module is used for compensating the received signal according to the second control signal.
Therefore, when the 2.5G/5G network port transmits signals along with the common hundredth-meter five-type cable harness, the compensation circuit for the transmission signals provided by the embodiment of the invention can compensate the transmission signals in advance according to the transmission parameters of the current transmission signals so as to compensate the attenuation of the transmission signals caused by the influences of insertion loss, near-end crosstalk, far-end crosstalk and the like, thereby improving the immunity of the transmission signals of the 2.5G/5G network port.
With reference to the first aspect, in one possible implementation manner, the transmission parameters include impedance, insertion loss, near-end crosstalk, and far-end crosstalk.
With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the first compensation module may include at least one switch, a first voltage compensation module, and a first filtering processing module. The output end of the control module is connected with the at least one switch respectively, and is used for obtaining a numerical value of transmission characteristics of a transmission signal according to impedance, insertion loss, near-end crosstalk and far-end crosstalk of the transmission signal, obtaining first gating configuration information corresponding to the numerical value of the transmission characteristics and a currently-supported communication network port according to the numerical value of the transmission characteristics, the currently-supported communication network port and a first pre-stored corresponding relation, and sending a first control signal to each switch of the at least one switch according to the first gating configuration information so as to control on or off of each switch of the at least one switch. The first corresponding relation comprises a numerical range of transmission characteristics of the sending signal, a currently supported communication port and corresponding gating configuration information, wherein the gating configuration information comprises that each switch in at least one switch is in an on state or an off state. At this time, correspondingly, at least one switch is used for switching on or switching off according to the first control signal. And the first voltage compensation module is used for performing voltage compensation on the sending signal according to the result of the on or off of at least one switch. And the first filtering processing module is used for carrying out filtering processing on the sending signal according to the result of the on or off of at least one switch.
With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the second compensation module may include at least one switch, a second voltage compensation module, and a second filtering processing module. The output end of the control module is connected with the at least one switch respectively, and is configured to obtain a value of a transmission characteristic of the received signal according to impedance, insertion loss, near-end crosstalk and far-end crosstalk of the received signal, obtain second gating configuration information corresponding to the value of the transmission characteristic and the currently-supported communication network port according to the value of the transmission characteristic, the currently-supported communication network port and a second correspondence stored in advance, and send a second control signal to each switch of the at least one switch according to the second gating configuration information to control on or off of each switch of the at least one switch. The second corresponding relationship includes a value range of transmission characteristics of the received signal, a currently supported communication port, and corresponding gating configuration information, where the gating configuration information includes whether each switch in at least one switch is in an on state or an off state. At this time, correspondingly, at least one switch is used for switching on or switching off according to the second control signal. And the second voltage compensation module is used for performing voltage compensation on the received signal according to the result after the at least one switch is turned on or off. And the second filtering processing module is used for carrying out filtering processing on the received signal according to the result after the at least one switch is turned on or off.
With reference to the first aspect and the possible implementations described above, in another possible implementation, the switch may be a dual gate fet. The output end of the control module is connected with the control end of the double-grid field effect transistor and used for sending low level to the double-grid field effect transistor so as to control the double-grid field effect transistor to be cut off; or the high-level voltage is used for sending high level to the double-grid field effect transistor so as to control the double-grid field effect transistor to be conducted.
In a second aspect, there is provided a compensation method for a transmission signal, which is applied in a compensation circuit for a transmission signal in the first aspect or a possible implementation manner of the first aspect, and the method may include: the detection module detects the transmission parameters of the sending signals and the transmission parameters of the receiving signals, and transmits the transmission parameters of the sending signals and the transmission parameters of the receiving signals to the control module. The control module sends a first control signal to the first compensation module according to the transmission parameter of the sending signal, and sends a second control signal to the second compensation module according to the transmission parameter of the receiving signal. The first compensation module compensates the transmission signal according to the first control signal. The second compensation module compensates the received signal according to the second control signal.
Therefore, when the 2.5G/5G network port transmits signals along with the common hundredth-meter five-type cable harness, the compensation method of the transmission signals provided by the embodiment of the invention can compensate the transmission signals in advance according to the transmission parameters of the current transmission signals so as to compensate the attenuation of the transmission signals caused by the influences of insertion loss, near-end crosstalk, far-end crosstalk and the like, thereby improving the immunity of the transmission signals of the 2.5G/5G network port.
With reference to the second aspect, in one possible implementation manner, the transmission parameters include impedance, insertion loss, near-end crosstalk, and far-end crosstalk.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the first compensation module may include at least one switch, a first voltage compensation module, and a first filtering processing module. At this time, the control module sends the first control signal to the first compensation module according to the transmission parameter of the sending signal, and specifically includes: the control module obtains a numerical value of transmission characteristics of a transmission signal according to impedance, insertion loss, near-end crosstalk and far-end crosstalk of the transmission signal, obtains first gating configuration information corresponding to the numerical value of the transmission characteristics and a currently-supported communication network port according to the numerical value of the transmission characteristics, the currently-supported communication network port and a first pre-stored corresponding relation, and sends a first control signal to each switch of at least one switch according to the first gating configuration information so as to control on or off of each switch of the at least one switch. The first corresponding relation comprises a numerical range of transmission characteristics of the sending signal, a currently supported communication port and corresponding gating configuration information, wherein the gating configuration information comprises that each switch in at least one switch is in an on state or an off state. Correspondingly, the first compensation module compensates the transmission signal according to the first control signal, and specifically includes: the first voltage compensation module performs voltage compensation on the sending signal according to a result after the at least one switch is turned on or off, and the first filtering processing module performs filtering processing on the sending signal according to a result after the at least one switch is turned on or off.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the second compensation module may include at least one switch, a second voltage compensation module, and a second filtering processing module. At this time, the control module sends a second control signal to the second compensation module according to the transmission parameter of the received signal, which specifically includes: the control module obtains a numerical value of the transmission characteristic of the received signal according to the impedance, the insertion loss, the near-end crosstalk and the far-end crosstalk of the received signal, obtains second gating configuration information corresponding to the numerical value of the transmission characteristic and the currently-supported communication network port according to the numerical value of the transmission characteristic, the currently-supported communication network port and a pre-stored second corresponding relation, and sends a second control signal to each switch of the at least one switch according to the second gating configuration information so as to control the on or off of each switch of the at least one switch. The second corresponding relationship includes a value range of transmission characteristics of the received signal, a currently supported communication port, and corresponding gating configuration information, where the gating configuration information includes whether each switch in at least one switch is in an on state or an off state. Correspondingly, the second compensation module compensates the received signal according to the second control signal, and specifically includes: the second voltage compensation module performs voltage compensation on the received signal according to a result after the at least one switch is turned on or off, and the second filtering processing module performs filtering processing on the received signal according to a result after the at least one switch is turned on or off.
In a third aspect, a switch is provided, which may include: such as the compensation circuit of the transmission signal in the first aspect or a possible implementation manner of the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a compensation circuit for a transmission signal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another compensation circuit for transmission signals according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another compensation circuit for a transmission signal according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another compensation circuit for a transmission signal according to an embodiment of the present invention;
FIG. 5 is an equivalent circuit according to an embodiment of the present invention;
FIG. 6 is an equivalent circuit according to an embodiment of the present invention;
fig. 7 is a flowchart of a compensation method for a transmission signal according to an embodiment of the present invention;
fig. 8 is a switch according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a compensation circuit for a transmission signal according to an embodiment of the present invention. As shown in fig. 1, the compensation circuit of the transmission signal may include a detection module 101, a control module 102, a first compensation module 103, and a second compensation module 104.
The output end of the detection module 101 is connected to the input end of the control module 102, and is configured to detect a transmission parameter of a transmission signal and a transmission parameter of a reception signal, and transmit the transmission parameter of the transmission signal and the transmission parameter of the reception signal to the control module 102.
The output end of the control module 102 is connected to the first compensation module 103 and the second compensation module 104, respectively, and is configured to send a first control signal to the first compensation module 103 according to the transmission parameter of the sending signal, and send a second control signal to the second compensation module 104 according to the transmission parameter of the receiving signal.
The first compensation module 103 is configured to compensate the transmission signal according to the first control signal and output the compensated transmission signal.
The second compensation module 104 is configured to compensate the received signal according to the second control signal and output the compensated received signal.
Thus, when the 2.5G/5G network port transmits a signal (the signal includes a transmission signal and a reception signal) along a normal hundredth-meter five-type cable harness, the compensation circuit for the transmission signal provided by the embodiment of the invention can compensate the transmission signal in advance according to the transmission parameter of the current transmission signal so as to compensate the attenuation of the transmission signal caused by the influence of insertion loss, near-end crosstalk, far-end crosstalk and the like, thereby improving the immunity of the transmission signal of the 2.5G/5G network port.
In the embodiment of the present invention, further, the transmission parameters may include impedance, insertion loss, near-end crosstalk and far-end crosstalk, where the impedance and the insertion loss are used to indicate signal quality of the signal, and the near-end crosstalk and the far-end crosstalk are used to indicate alien crosstalk of the signal. The insertion loss refers to the loss of load power caused by the insertion of an element or a device at a certain position of a transmission system, and is expressed by the ratio of the power received by the load before the element or the device is inserted to the power received by the same load after the element or the device is inserted in decibels; near-end crosstalk refers to interference caused by coupling of a signal transmitted at a transmitting end to a receiving end of another adjacent pair; far-end crosstalk refers to interference caused by signals on the near-end opposite pairs of a cable harness link.
In an embodiment of the present invention, further, on the basis that the transmission parameters include impedance, insertion loss, near-end crosstalk and far-end crosstalk, as shown in fig. 2, the first compensation module 103 may include at least one switch 1031, a first voltage compensation module 1032 and a first filtering processing module 1033.
The output end of the control module 102 is connected to at least one switch 1031, respectively, and is configured to use the following formula according to the impedance, insertion loss, near-end crosstalk, and far-end crosstalk of the transmission signal:
calculating to obtain the transmission characteristic value of the transmitted signal, wherein m is the transmission characteristic, Ka and Kb、Kc、KdRespectively, an impedance weighting factor, an insertion loss weighting factor, a near-end crosstalk weighting factor and a far-end crosstalk weighting factor, where Rn, In, Nn, Fn are respectively impedance, insertion loss, near-end crosstalk and far-end crosstalk detected by the detection module, and R is0、I0、N0、F0Respectively, impedance, insertion loss, near-end crosstalk, far-end crosstalk, R during no-loadh、Ih、Nh、FhThe impedance, insertion loss, near-end crosstalk and far-end crosstalk of the standard hundredth-meter five-type cable harness are respectively. Then, according to the calculated value of the transmission characteristic, the currently supported communication network port, the prestored first corresponding relation including the value range of the transmission characteristic of the sending signal, the current communication network port and the corresponding gating configuration information, the first gating configuration information corresponding to the value of the transmission characteristic and the currently supported communication network port is obtainedThe gating configuration information may include at least one switch 1031, each of which is in an on state or an off state. And then sends a first control signal to each of the at least one switch 1031 according to the acquired first gating configuration information to control on or off of each of the at least one switch 1031.
At this time, correspondingly, at least one switch 1031 is configured to be turned on or off according to the first control signal.
A first voltage compensation module 1032, configured to perform voltage compensation on the transmission signal according to a result after the at least one switch 1031 is turned on or off, so as to compensate attenuation of the transmission signal due to the influence of the insertion loss in advance.
A first filtering processing module 1033, configured to perform filtering processing on the transmission signal according to a result after the at least one switch 1031 is turned on or off, so as to eliminate interference that the transmission signal may receive in advance.
In an embodiment of the present invention, further, on the basis that the transmission parameters include impedance, insertion loss, near-end crosstalk and far-end crosstalk, as shown in fig. 3, the second compensation module 104 may include at least one switch 1041, a second voltage compensation module 1042 and a second filtering processing module 1043.
The output end of the control module 102 is connected to the at least one switch 1041, and is configured to calculate, according to the impedance, the insertion loss, the near-end crosstalk, and the far-end crosstalk of the received signal, by using the above formula (1), a value of a transmission characteristic of the received signal, and obtain, according to the calculated value of the transmission characteristic, a currently supported communication port, and a second correspondence stored in advance and including a value range of the transmission characteristic of the received signal, the currently supported communication port, and corresponding gating configuration information, second gating configuration information corresponding to the value of the transmission characteristic and the currently supported communication port, where the gating configuration information may include an on state or an off state of each switch of the at least one switch 1041. And then, according to the obtained second gating configuration information, a second control signal is sent to each switch of the at least one switch 1041 to control the on/off of each switch of the at least one switch 1041.
At this time, correspondingly, at least one switch 1041 is used for being turned on or off according to the second control signal.
The second voltage compensation module 1042 is configured to perform voltage compensation on the received signal according to a result after the at least one switch 1041 is turned on or off, so as to compensate for attenuation of the transmitted signal due to the influence of insertion loss in advance.
The second filtering module 1043 is configured to perform filtering processing on the received signal according to a result after the at least one switch 1041 is turned on or off, so as to eliminate interference that the received signal may receive in advance.
In the embodiment of the invention, further, the switch can be a double-gate field effect transistor. The output end of the control module 102 is connected with the control end of the double-gate field effect transistor and is used for sending low level to the double-gate field effect transistor so as to control the double-gate field effect transistor to be cut off; or the high-level voltage is used for sending high level to the double-grid field effect transistor so as to control the double-grid field effect transistor to be conducted.
In the embodiment of the present invention, further, in order to protect the dual-gate fet, the at least one switch 1031 and the at least one switch 1041 may further include at least one resistor, respectively, where one end of each resistor is connected to the source of the dual-gate fet, and the other end is grounded.
In the embodiment of the present invention, further, the first voltage compensation module 1032 and the second voltage compensation module 1042 may respectively include at least one resistor, or may respectively include at least one resistor and a power supply, or may respectively include a power supply.
In this embodiment of the present invention, further, the first filtering processing module 1033 and the second filtering processing module 1043 may respectively include at least one capacitor, or may respectively include at least one inductor and at least one capacitor, or may respectively include at least one inductor.
It should be noted that, in the embodiment of the present invention, the first corresponding relationship and the second corresponding relationship may be configured in the control module 102 in advance according to actual situations.
To facilitate understanding by those skilled in the art, the present invention is illustrated by the following embodiments of a compensation circuit for a transmission signal.
Illustratively, the detection module 101 is an Analog to Digital Converter (ADC). The control module 102 is a Complex Programmable Logic Device (CPLD). The at least one switch 1031 included in the first compensation module 103 includes 6 dual-gate fets M1, M2, M3, M4, M5, and M6, and resistors R4, R5, and R7. The first voltage compensation module 1032 includes a power supply P1, and resistors R1, R6, and R8. The first filtering processing module 1033 includes inductors L1, L2, and L4, and a capacitor C1. The at least one switch 1041 included in the second compensation module 104 includes 6 dual gate fets M7, M8, M9, M10, M11, and M12, respectively, and resistors R10, R13, and R15. The second voltage compensation module 1042 includes a power source P2, and resistors R2, R3, R9, R11, R12, and R14. The second filtering processing module 1043 includes inductors L3 and L5, and capacitors C2 and C3. The specific circuit diagram is shown in fig. 4.
Since the first compensation module 103 compensates the transmission signal and has the same principle as the second compensation module 104 compensates the reception signal, the first compensation module 103 compensates the transmission signal in the embodiment of the present invention.
For example, assume that the first correspondence pre-stored in the CPLD is as shown in table 1.
TABLE 1
As shown in table 1, when the transmission characteristic of the transmission signal is in the numerical range of (0, 1), it indicates that the transmission of the transmission signal is within one hundred meters, and the voltage offset of the transmission signal is 0. A range of (1,3) indicates a transmission of the transmitted signal of between 100 meters and 110 meters. A range of (3, 7) indicates a transmission of the transmitted signal of between 110 and 130 meters. For the relationship between the value range of the transmission characteristic of the transmission signal and the transmission distance of the transmission signal, reference may be made to a calculation method in the prior art, and details of the embodiment of the present invention are not described herein again.
Then, the CPLD may calculate a value of the transmission characteristic of the transmission signal according to the detected impedance, insertion loss, near-end crosstalk and far-end crosstalk of the transmission signal, assuming that the value of the transmission characteristic is 2.5, and assuming that the currently supported communication port is 2.5G, the CPLD may obtain corresponding first gating configuration information according to a range in which the value of the transmission characteristic is located is (1,3), and according to the currently supported communication port 2.5G, transmit high levels to M1, M2, M3, M5, and M6 respectively to control M1, M2, M3, M5, and M6 to be turned on, and transmit low levels to M4 to control M4 to be turned off.
At this time, after M1, M2, M3, M5 and M6 are turned on and M4 is turned off, M1, M2, M3, M5 and M6 which are turned on can be regarded as a short circuit, and M4 which is turned off can be regarded as an open circuit, and the equivalent circuit diagram of fig. 4 is as shown in fig. 5. Based on fig. 5, the inductance and the capacitance in the first compensation module 103 may be removed to obtain an equivalent circuit diagram of the first voltage compensation module 1032 after the M1, the M2, the M3, the M5, and the M6 are turned on and the M4 is turned off, as shown in fig. 6. At this time, if the input voltage of the transmission signal is V1, the output voltage of the first voltage compensation module 1032 after voltage compensation of the transmission signal is V1+ P1.
After M1, M2, M3, M5, and M6 are turned on and M4 is turned off, L1, L2, and L4 are star-connected, so that the total inductance L ═ L1+ L2 ═ L4/(L1+ L2+ L4), and the first filtering processing module 1033 filters the transmission signal to f ═ 1/2 pi (2 ═ L ═ ω — (2 × L — + L4)2*C)1/2. Where ω is the angular frequency value of 2.5G operating at 100MHz, L is the value of the total inductance, and C is the value of C1.
It should be noted that, in the embodiment of the present invention, the range of the operating frequency of the 2.5G communication network port is [0MHZ, 100MHZ]The working frequency range of the communication network port of 5G is [0MHZ, 200MHZ]Thus, it is possible to follow the formula: f 1/2 pi (2L ω)2*C)1/2In the case where the range f and ω of the communication network port are known, the numerical range of LC is calculated, and a value of LC is determined from the range, thereby setting a first filter processing mode that can satisfy the requirement according to the value of LCBlock 1033.
Also, the first voltage compensation module 1032 needs to be able to compensate the voltage of the corresponding transmission signal. Specifically, when the transmission characteristic of the transmission signal is in the numerical range of (1,3), which indicates that the transmission of the transmission signal is between 100 meters and 110 meters, the impedance requirement range of the five-type cable harness of the standard hectometers is as follows: 22 ohm-25 ohm, namely, the impedance per meter is 0.22 ohm-0.25 ohm, and the impedance range of the cable harness corresponding to the transmission characteristic of the transmission signal with the range (1,3) is 22 ohm-27.5 ohm by multiplying 110 meters by 0.22 ohm and 0.25 ohm respectively according to the proportion, at this time, the first voltage compensation module 1032 needs to be capable of compensating the voltage of 22 ohm-27.5 ohm. Similarly, the impedance range of the cable harness corresponding to the transmission characteristic of the transmission signal in the range of (3, 7) is 27.5 ohm to 32.5 ohm, and at this time, the first voltage compensation module 1032 needs to be able to compensate the voltage in the range of 27.5 ohm to 32.5 ohm. In the embodiment of the present invention, when the numerical range of the transmission characteristic of the transmission signal is (1,3), the first voltage compensation module 1032 exemplifies the setting of the voltage compensation value P1 of the transmission signal.
For example, assuming that the current impedance and insertion loss detected by the CPLD are 26.5 ohms, since the impedance corresponding to the input voltage V1 of the transmission signal is 22 ohms-25 ohms, the following formula can be used: v1/22 ═ (V1+ P1)min)/26.5，V1/25＝(V1+P1max) /26.5, calculate the range of voltage P1 that needs to be compensated (P1)min，P1max). Similarly, a range of P1 can be calculated from each resistance in the range of 22 ohm to 27.5 ohm corresponding to the range (1,3), and all the ranges of P1 intersect, at this time, the P1 can satisfy the voltage compensation for each resistance in the range of 22 ohm to 27.5 ohm by taking any one P1 in the intersection.
Fig. 7 is a compensation method of a transmission signal according to an embodiment of the present invention, applied to a compensation circuit of the transmission signal shown in any one of fig. 1 to 4, as shown in fig. 7, the method includes:
201. the detection module detects the transmission parameters of the sending signals and the transmission parameters of the receiving signals, and transmits the transmission parameters of the sending signals and the transmission parameters of the receiving signals to the control module.
202. The control module sends a first control signal to the first compensation module according to the transmission parameter of the sending signal, and sends a second control signal to the second compensation module according to the transmission parameter of the receiving signal.
203. The first compensation module compensates the transmission signal according to the first control signal, and the second compensation module compensates the reception signal according to the second control signal.
Therefore, when the 2.5G/5G network port transmits signals along with the common hundredth-meter five-type cable harness, the compensation method of the transmission signals provided by the embodiment of the invention can compensate the transmission signals in advance according to the transmission parameters of the current transmission signals so as to compensate the attenuation of the transmission signals caused by the influences of insertion loss, near-end crosstalk, far-end crosstalk and the like, thereby improving the immunity of the transmission signals of the 2.5G/5G network port.
Fig. 8 is a switch according to an embodiment of the present invention, and as shown in fig. 8, the switch may include: a compensation circuit for a transmission signal as described in any of figures 1-4.
The switch provided by the embodiment of the invention comprises the compensation circuit of the transmission signal, so that the same effect as the compensation circuit of the transmission signal can be achieved.
In the several embodiments provided in the present application, it should be understood that the disclosed terminal and method can be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A compensation circuit for transmission signals, comprising a detection module, a control module, a first compensation module and a second compensation module, wherein:
the output end of the detection module is connected with the input end of the control module and is used for detecting the transmission parameters of the sending signals and the transmission parameters of the receiving signals and transmitting the transmission parameters of the sending signals and the transmission parameters of the receiving signals to the control module;
the output end of the control module is respectively connected with the first compensation module and the second compensation module, and is used for sending a first control signal to the first compensation module according to the transmission parameter of the sending signal and sending a second control signal to the second compensation module according to the transmission parameter of the receiving signal;
the first compensation module is used for compensating the sending signal according to the first control signal;
the second compensation module is used for compensating the receiving signal according to the second control signal;
wherein the transmission parameters include impedance, insertion loss, near-end crosstalk, and far-end crosstalk;
wherein the first compensation module comprises at least one first switch, a first voltage compensation module and a first filtering processing module, wherein:
the output end of the control module is respectively connected with the at least one first switch, and is configured to obtain a numerical value of transmission characteristics of the transmission signal according to impedance, insertion loss, near-end crosstalk and far-end crosstalk of the transmission signal, obtain a first gating configuration information corresponding to the numerical value of the transmission characteristics and a currently supported communication network port according to the numerical value of the transmission characteristics, the currently supported communication network port and a first correspondence stored in advance, and send the first control signal to each of the at least one first switch according to the first gating configuration information to control on or off of each of the at least one first switch; the first corresponding relation comprises a numerical range of transmission characteristics of a sending signal, a currently supported communication port and corresponding gating configuration information, and the gating configuration information comprises that each switch in the at least one first switch is in a conducting state or a stopping state;
the at least one first switch is used for being switched on or switched off according to the first control signal;
the first voltage compensation module is used for performing voltage compensation on the sending signal according to a result after the at least one first switch is turned on or off;
and the first filtering processing module is used for carrying out filtering processing on the sending signal according to the result of the at least one first switch after being switched on or switched off.
2. The compensation circuit of claim 1, wherein the second compensation module comprises at least one second switch, a second voltage compensation module, and a second filtering processing module, wherein:
the output end of the control module is respectively connected to the at least one second switch, and is configured to obtain a value of a transmission characteristic of the received signal according to impedance, insertion loss, near-end crosstalk and far-end crosstalk of the received signal, obtain a second gating configuration information corresponding to the value of the transmission characteristic and a currently supported communication network port according to the value of the transmission characteristic, the currently supported communication network port and a second correspondence stored in advance, and send the second control signal to each switch of the at least one second switch according to the second gating configuration information to control on or off of each switch of the at least one second switch; the second corresponding relationship comprises a numerical range of transmission characteristics of a received signal, a currently supported communication port and corresponding gating configuration information, wherein the gating configuration information comprises that each switch in the at least one second switch is in a conducting state or a stopping state;
the at least one second switch is used for being switched on or switched off according to the second control signal;
the second voltage compensation module is used for performing voltage compensation on the received signal according to a result after the at least one second switch is turned on or off;
and the second filtering processing module is used for carrying out filtering processing on the received signal according to the result after the at least one second switch is turned on or off.
3. The compensation circuit of claim 1 or 2, wherein the first switch and the second switch are dual-gate fets, and the output terminal of the control module is connected to the control terminals of the dual-gate fets for sending a low level to the dual-gate fets to control the dual-gate fets to turn off; or the high-level signal is used for sending high level to the double-grid field effect transistor so as to control the conduction of the double-grid field effect transistor.
4. A method for compensating a transmission signal, which is applied to a compensation circuit of a transmission signal according to any one of claims 1 to 3, the method comprising:
the detection module detects transmission parameters of a sending signal and transmission parameters of a receiving signal, and transmits the transmission parameters of the sending signal and the transmission parameters of the receiving signal to the control module;
the control module sends a first control signal to a first compensation module according to the transmission parameter of the sending signal and sends a second control signal to a second compensation module according to the transmission parameter of the receiving signal;
the first compensation module compensates the transmission signal according to the first control signal;
the second compensation module compensates the received signal according to the second control signal;
wherein the transmission parameters include impedance, insertion loss, near-end crosstalk, and far-end crosstalk;
the first compensation module comprises at least one first switch, a first voltage compensation module and a first filtering processing module;
the control module sends a first control signal to a first compensation module according to the transmission parameter of the sending signal, and specifically includes:
the control module obtains a numerical value of transmission characteristics of the transmission signal according to impedance, insertion loss, near-end crosstalk and far-end crosstalk of the transmission signal, obtains first gating configuration information corresponding to the numerical value of the transmission characteristics and a currently-supported communication network port according to the numerical value of the transmission characteristics, the currently-supported communication network port and a first corresponding relation stored in advance, and sends the first control signal to each switch of the at least one first switch according to the first gating configuration information so as to control on or off of each switch of the at least one first switch; the first corresponding relation comprises a numerical range of transmission characteristics of a sending signal, a currently supported communication port and corresponding gating configuration information, and the gating configuration information comprises that each switch in the at least one first switch is in a conducting state or a stopping state;
correspondingly, the compensating the transmission signal by the first compensating module according to the first control signal specifically includes:
the first voltage compensation module performs voltage compensation on the sending signal according to a result of the at least one first switch after being turned on or turned off; and the first filtering processing module carries out filtering processing on the sending signal according to the result of the at least one first switch after being switched on or switched off.
5. The method of claim 4, wherein the second compensation module comprises at least one second switch, a second voltage compensation module, and a second filtering processing module;
the control module sends a second control signal to a second compensation module according to the transmission parameter of the received signal, and specifically includes:
the control module obtains a numerical value of the transmission characteristic of the received signal according to the impedance, the insertion loss, the near-end crosstalk and the far-end crosstalk of the received signal, obtains a second gating configuration information corresponding to the numerical value of the transmission characteristic and a currently supported communication network port according to the numerical value of the transmission characteristic, the currently supported communication network port and a pre-stored second corresponding relation, and sends the second control signal to each switch of the at least one second switch according to the second gating configuration information so as to control the on or off of each switch of the at least one second switch; the second corresponding relationship comprises a numerical range of transmission characteristics of a received signal, a currently supported communication port and corresponding gating configuration information, wherein the gating configuration information comprises that each switch in the at least one second switch is in a conducting state or a stopping state;
correspondingly, the second compensation module compensates the received signal according to the second control signal, and specifically includes:
the second voltage compensation module performs voltage compensation on the received signal according to a result of the at least one second switch after being turned on or turned off; and the second filtering processing module carries out filtering processing on the received signal according to the result of the on or off of the at least one second switch.
6. A switch, characterized in that it comprises a compensation circuit for transmission signals according to any one of claims 1 to 3.
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| CN103368894A (en) * | 2012-03-30 | 2013-10-23 | 美国博通公司 | Communication system having reduced crosstalk estimation complexity |
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| CN103368894A (en) * | 2012-03-30 | 2013-10-23 | 美国博通公司 | Communication system having reduced crosstalk estimation complexity |
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