CN101383659B - Apparatus and method for automatically debugging parameter of communication system - Google Patents
Apparatus and method for automatically debugging parameter of communication system Download PDFInfo
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Abstract
The invention provides a device and a method for automatically debugging parameters of a communications system. The device comprises a debugging object choosing unit, an error signal obtaining unit, an error signal analyzing unit and an adjustment unit, wherein the debugging object choosing unit is used for choosing a receiver and / or a sender of the communications system to be used as an object to be debugged, and choosing the current debugging parameter of the object to be debugged; the error signal obtaining unit is used for obtaining an error signal and transmitting the error signal to the error signal analyzing unit; the error signal analyzing unit is used for analyzing the error signal and judging whether the current debugging parameter can be adjusted or not according to the analysis result, if the adjustment is needed, the adjustment information recording the adjustment direction is transmitted to the adjustment unit; the adjustment unit is used for adjusting the current debugging parameter according to the adjustment information. The invention can improve the debugging efficiency and the debugging accuracy of the parameters of the sender and the receiver of the communications system, and realize automatic debugging and accurate calibration.
Description
Technical field
The present invention relates to digital communication technology field, relate in particular to the automatic debugging apparatus and the method for a kind of optical communication system emission, receiver.
Background technology
In digital communication system; The parameter of transmitter and receiver is the key factor that influences systematic function; These parameters comprise transmitter eye pattern crosspoint, driven amplitude, EA (electro-absorption; Electric absorption) Von level, the determination level of receiver of modulated laser, APD (Avalanche Photodiode, avalanche photodide) receiver bias voltage etc.Wherein the parameter of transmitter and receiver parameters are interactional, and when transmitter parameter changed, the parameter of receiver also need be adjusted accordingly, could guarantee the optimum transmission performance of system.Simultaneously; For different application environments; Because the influence of the factors such as noise, optical fiber dispersion and fiber nonlinear effect that image intensifer produces in the transmission system, the setting of transmitter and receiver parameter also need adjust accordingly, and adds influencing each other and restricting between the transmitter and receiver parameter; When carrying out the debugging of transmitter or receiver, it is very difficult and complicated the parameter of transmitter and receiver accurately being adjusted to optimum value.And select a kind of debugging calibration of efficiently and accurately extremely important.
Common debug process is that the parameter setting with transmitter and receiver is a fixing empirical value, because the influence of the factors such as difference of the discreteness of device and applied environment, the parameter that such adjustment method can't guarantee to set is for optimum.For this reason, the present invention proposes the apparatus and method that a kind of transmitter and receiver parameter is debugged calibration automatically.
Summary of the invention
The problem that the present invention will solve provides a kind of apparatus and method that the parameter of communication system is debugged automatically; Can improve the debugging efficiency and the adjustment accuracy of the transmitter and receiver parameter of digital communication system; Realize automated debug and accurately calibration, solve the technical problem that prior art is difficult to the parameter of transmitter and receiver is accurately adjusted to optimum value.
To achieve these goals, on the one hand, a kind of device that the parameter of communication system is debugged automatically is provided, has established transmission environment between the Receiver And Transmitter of said communication system, said device comprises:
The debugger object selected cell is used for: select the receiver of said communication system and/or transmitter conduct to treat debugger object, and select the said current tuning parameter of treating debugger object;
The error signal acquiring unit is used for: the information of obtaining the transmission performance that can characterize said communication system is as error signal, and said error signal is transferred to the error signal analytic unit;
The error signal analytic unit is used for: analyze said error signal, judge whether that according to analysis result needs adjust said current tuning parameter, the adjustment adjustment information that then will record the adjustment direction transfers to adjustment unit if desired;
Adjustment unit is used for: adjust said current tuning parameter according to said adjustment information.
Preferably, in the above-mentioned device, said adjustment unit further comprises:
The step-length adjustment unit; Be used for: the adjustment step-length of confirming said current tuning parameter; Said adjustment step-length is the predetermined step-length of the said current tuning parameter of adjustment of storage, the step-length that perhaps said adjustment step-length calculates for the said analysis result according to said error signal analytic unit;
The parameter adjustment unit is used for: according to said adjustment direction and said adjustment step-length said current tuning parameter is adjusted.
Preferably, in the above-mentioned device, also comprise: the transmission environment unit is used for: according to the applied environment of said receiver and said transmitter, set up said transmission environment.
Preferably; In the above-mentioned device; Said debugger object selected cell also is used for, and the various parameters of said transmitter of Cyclic Selection and said receiver are as said current tuning parameter, and realization is to the control of circular order, endless form and the cycle-index of said circulation.
Preferably, in the above-mentioned device, said various parameters comprise: the eye pattern crosspoint of the driven amplitude of transmitter, transmitter and the decision level of receiver.
One aspect of the present invention provides a kind of method that the parameter of communication system is debugged automatically, establishes transmission environment between the Receiver And Transmitter of said communication system, and said method comprises:
Step 1, the parameter adjustment unit is provided with the initial value of transmitter parameter and receiver parameters;
Step 2, error signal analytic unit judge whether to meet the condition that debugging is accomplished, if meet, finish the debugging flow process, if do not meet, proceed step 3;
Step 3, the debugger object selected cell is selected a current tuning parameter;
Step 4, error signal acquiring unit are obtained the information of the transmission performance that can characterize said communication system as error signal;
Step 5, said error signal analytic unit is analyzed said error signal, judges whether that according to the error signal analysis result needs adjust said current tuning parameter, is execution in step six then, otherwise returns step 2;
Step 6, adjustment unit is adjusted said current tuning parameter according to said error signal analysis result.
Preferably, in the above-mentioned method, said step 6 further comprises:
Step a, said error signal analytic unit is analyzed said error signal, draws the adjustment direction that said current tuning parameter need be adjusted;
Step b; Step-length adjustment unit in the said adjustment unit is confirmed the adjustment step-length of said current tuning parameter; Said adjustment step-length is the predetermined step-length of the said current tuning parameter of adjustment of storage, the step-length of perhaps said adjustment step-length for calculating according to said error signal analysis result;
Step c, the parameter adjustment unit in the said adjustment unit is adjusted said current tuning parameter according to said adjustment direction and said adjustment step-length;
Steps d is returned step 4 after adjusting said current tuning parameter.
Preferably, in the above-mentioned method, said initial value is one group of empirical value.
Preferably; In the above-mentioned method; Said step 3 specifically comprises: the various parameters of said said transmitter of debugger object selected cell Cyclic Selection and said receiver are as said current tuning parameter, and realization is to the control of circular order, endless form and the cycle-index of said circulation.
Preferably, in the above-mentioned method, said various parameters comprise: the eye pattern crosspoint of the driven amplitude of transmitter, transmitter and the decision level of receiver.
There is following technique effect at least in the embodiment of the invention:
Adopt the method for the invention and device; Compared with prior art; Owing to taked digital communication system transmitter and receiver parameters are debugged automatically the technology of calibration, guaranteed the precision of transmitter and receiver parameter setting, improved debugging efficiency; Guarantee debug performance, improved performance index such as system signal noise ratio and receiving sensitivity.
Description of drawings
Fig. 1 is the structure chart of device provided by the invention;
Fig. 2 is the flow chart of method provided by the invention;
The structure chart of the device that Fig. 3 provides for another embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, will combine accompanying drawing that specific embodiment is described in detail below.
The embodiment of the invention has proposed a kind of apparatus and method that can carry out the debugging calibration of transmitter parameter and receiver parameters automatically; It can improve the debugging efficiency and the adjustment accuracy of the transmitter and receiver parameter of digital communication system, realizes automated debug and accurately calibration.
Fig. 1 is the structure chart of device provided by the invention; As shown in Figure 1; The debugger object 200 of apparatus of the present invention 100 comprises: transmitter and receiver; Can debug calibration simultaneously to the transmitter and receiver parameter, also can adopt with debugging calibration good transmitter or receiver and do benchmark, and only another debugged calibration.
Establish transmission environment 300 between the transmitter and receiver, transmission environment 300 can be set up according to the applied environment of treating debugger object by the transmission environment unit, so that transmission environment and applied environment are close, improves the debugging accuracy.
As shown in Figure 1, the device that the parameter of communication system is debugged automatically of the present invention comprises:
Error signal acquiring unit 101: obtain can the characterization system transmission performance information as error signal, and the error signal of obtaining transferred to error analysis unit 102;
Error signal analytic unit 102: the information that the analytical error acquiring unit obtains judges whether and need adjust current adjustment parameter that if desired, the direction that analysis and judgement need be adjusted is with related information transmission to step-length adjustment unit 104;
Debugger object selected cell 103: because the influencing each other of transmitter and receiver parameter, therefore need be to the adjustment that circulates of various parameters, the debugger object selected cell can be realized the control to circular order, mode, number of times etc.;
Step-length adjustment unit 104: the predetermined adjustment step-length of stored transmit machine and receiver parameters or according to the analysis result transmitter computes of error signal analytic unit and the adjustment step-length of receiver parameters, and the information of the adjustment direction of confirming according to the error signal analytic unit transfers to the tuning parameter setup unit in the lump;
Parameter adjustment unit 105: the adjustment direction that transmission comes according to the step-length adjustment unit is adjusted the selected parameter of debugging object selecting unit with the adjustment step-length.
Wherein, communication system can be digital communication system, optical communication system or the like.
The embodiment of the invention also provides in a kind of digital communication system the transmitter and receiver parameter to debug calibrating method automatically, and Fig. 2 is the flow chart of this method, comprising:
The first step 51 is provided with the initial value of transmitter and receiver parameter, and initial value design can be one group of empirical value.
In the 3rd step 53, select a current tuning parameter;
The 4th step 54, obtain can the characterization system transmission performance information as error signal;
In the 5th step 55, error signal is analyzed;
The 6th step 56 need to judge whether adjustment to treat tuning parameter, if do not need adjustment, then returned for second step 52;
In the 7th step 57, if desired, treat tuning parameter adjustment to current according to the error signal analysis result.
Wherein the 7th step comprised again:
Describe below in conjunction with concrete emitter (transmitter) and receiving system (receiver).In the present embodiment with transmitter and receiver all as debugger object; The parameter that need debug is an example with the decision level of driven amplitude, eye pattern crosspoint and the receiver of transmitter; Other increases or delete parameter; The method of perhaps only one of transmitter or receiver being debugged is similar, only need in the debugger object selected cell, get final product adjusting on the control modes such as debugging order and number of times.Transmission environment among the embodiment is with 8 * 80 kilometers transmission, and the chromatic dispersion full remuneration is an example, can carry out the configuration of different transmission environments to other applied environments.The control information that parameter testing is carried out in the error correction information conduct of adopting forward error correction unit to provide in the present embodiment.
Below embodiment is described in detail:
Fig. 3 is the structured flowchart of present embodiment, comprises following components:
Comprise driver, the integrated laser of EA modulator, driven amplitude adjustment unit and eye pattern crosspoint adjustment unit in the emitter.Wherein:
Driver: the signal of telecommunication amplified export to modulator after being shaped into suitable amplitude;
The laser of integrated EA modulator: receive the signal of telecommunication that driver provides, accomplish the conversion of the signal of telecommunication to light signal;
Driven amplitude adjustment unit: set the amplitude output signal of driver, receive the adjustment signal that microprocessor provides, carry out controlling the driven amplitude of adjusting driver after the digital-to-analogue conversion;
Eye pattern crosspoint adjustment unit: set position, transmitter eye pattern crosspoint, receive the adjustment signal that microprocessor provides, carry out controlling the eye pattern crosspoint of adjusting emitter after the digital-to-analogue conversion.
Comprise photodetector in the receiving system, trans-impedance amplifier, limiting amplifier, judgement/data clock recovers, the decision level adjustment, wherein:
Photodetector: accomplish the conversion of the light signal and the signal of telecommunication.Be generally photodiode or avalanche photodiode.The size and the average light power of the photogenerated current of output are directly proportional;
Trans-impedance amplifier: the ultra-weak electronic signal of photodetector output is carried out linear amplification, comprise traditional trans-impedance amplifier and voltage amplifier;
Limiting amplifier: the signal to trans-impedance amplifier output carries out the amplitude limit amplification, whether has automatic gain control and all can;
Judgement/clock and data recovery unit: comprise functional modules such as filter, data and clock recovery, judgement, demodulation multiplexer;
Decision level adjustment unit: receive the adjustment signal that microprocessor provides, carry out controlling the decision level of adjusting receiving system after the digital-to-analogue conversion.
Transmission environment: be 8 sections 80km transmission, wherein each section has all been carried out dispersion compensation and EDFA power amplification.
Forward error correction unit: accomplish forward error correction function, and error correction information is reported microprocessor.
Microprocessor: the error correction information of inquiry forward error correction unit, carry out analytical calculation, control adjustment parameter respectively to be adjusted.
Its course of work is following:
Light signal by emitter output gets into receiving system after transmitting; Input optical signal converts the faint signal of telecommunication into through photodetector; Accomplish preposition amplification through trans-impedance amplifier then; Accomplish amplification, filtering and data recovery through linear passageway and data recovery unit, get into forward error correction unit at last, accomplish the detection and the correction of transmission error code.Simultaneously, the error correction information of forward error correction unit output is through the eye pattern crosspoint adjustment of microprocessor control emitter.The control information that the eye pattern crosspoint is optimized and revised is carried out in the error correction information conduct of adopting forward error correction unit to provide in the present embodiment, so forward error correction unit promptly is equivalent to the error signal acquiring unit in the device block diagram; Microprocessor is used for the error correction information that forward error correction unit provides is analyzed and calculated; And the output parameter adjustment information is equivalent to error signal analytic unit and step-length adjustment unit in the device block diagram to the decision level adjustment unit in driven amplitude adjustment unit, eye pattern crosspoint adjustment unit or the receiving system in the dispensing device.
The example that is adjusted into the eye pattern crosspoint: in fec systems; In error correction information, correct 1 number with correct 0 number with E hour; Error rate of system is minimum, and transmission performance is optimum, therefore can utilize the judgement foundation of this information E as the adjustment of eye pattern crosspoint.Get fixedly minimum step h, initial eye pattern intersects point value and is set to X=a, and the contrast X=a error correction information that fec systems provides during with X=a+h is as if EX=a>EX=a+h, X=a+h then, otherwise X=a-h.Judge once more on new X position that afterwards until E=0, the locational E value in perhaps current eye pattern crosspoint is minimum, or the adjustment number of times stops during greater than N, think that this adjustment to the eye pattern crosspoint accomplishes.Select other parameters to be adjusted through microprocessor, adjust according to same process.Because the parameter of transmitter and receiver can influence each other, so the adjustment of parameter need circulate several times.It is responsive to consider that decision level all compares the variation in driven amplitude and eye pattern crosspoint; The circular order that in our embodiment, adopts--->decision level--->eye pattern crosspoint--->decision level that is driven amplitude--->driven amplitude ..., under other environment or other wait to adjust under the parameter and can set different circular orders according to actual conditions.Treat that parameters all is transferred to optimal value, or transmission performance meets the requirements, or after cycle-index reaches upper limit M, think that debug process finishes.
By on can know; Adopt the method for the invention and device, compared with prior art, owing to taked digital communication system transmitter and receiver parameters are debugged automatically the technology of calibration; Guaranteed the precision of transmitter and receiver parameter setting; Improve debugging efficiency, guaranteed debug performance, improved performance index such as system signal noise ratio and receiving sensitivity.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (8)
1. the device that the parameter of communication system is debugged automatically establishes transmission environment between the Receiver And Transmitter of said communication system, it is characterized in that, said device comprises:
The debugger object selected cell is used for: select the receiver of said communication system and/or transmitter conduct to treat debugger object, and select the said current tuning parameter of treating debugger object;
The error signal acquiring unit is used for: the information of obtaining the transmission performance that can characterize said communication system is as error signal, and said error signal is transferred to the error signal analytic unit;
The error signal analytic unit is used for: analyze said error signal, judge whether that according to analysis result needs adjust said current tuning parameter, the adjustment adjustment information that then will record the adjustment direction transfers to adjustment unit if desired;
Adjustment unit is used for: adjust said current tuning parameter according to said adjustment information;
Said adjustment unit further comprises:
The step-length adjustment unit; Be used for: the adjustment step-length of confirming said current tuning parameter; Said adjustment step-length is the predetermined step-length of the said current tuning parameter of adjustment of storage, the step-length that perhaps said adjustment step-length calculates for the said analysis result according to said error signal analytic unit;
The parameter adjustment unit is used for: according to said adjustment direction and said adjustment step-length said current tuning parameter is adjusted.
2. device according to claim 1 is characterized in that, also comprises:
The transmission environment unit is used for: according to the applied environment of said receiver and said transmitter, set up said transmission environment.
3. device according to claim 1; It is characterized in that; Said debugger object selected cell also is used for, and the various parameters of said transmitter of Cyclic Selection and said receiver are as said current tuning parameter, and realization is to the control of circular order, endless form and the cycle-index of said circulation.
4. device according to claim 3 is characterized in that, said various parameters comprise: the eye pattern crosspoint of the driven amplitude of transmitter, transmitter and the decision level of receiver.
5. the method that the parameter of communication system is debugged automatically establishes transmission environment between the Receiver And Transmitter of said communication system, it is characterized in that, said method comprises:
Step 1, the parameter adjustment unit is provided with the initial value of transmitter parameter and receiver parameters;
Step 2, error signal analytic unit judge whether to meet the condition that debugging is accomplished, if meet, finish the debugging flow process, if do not meet, proceed step 3;
Step 3, the debugger object selected cell is selected a current tuning parameter;
Step 4, error signal acquiring unit are obtained the information of the transmission performance that can characterize said communication system as error signal;
Step 5, said error signal analytic unit is analyzed said error signal, judges whether that according to the error signal analysis result needs adjust said current tuning parameter, is execution in step six then, otherwise returns step 2;
Step 6, adjustment unit is adjusted said current tuning parameter according to said error signal analysis result;
Said step 6 further comprises:
Step a, said error signal analytic unit is analyzed said error signal, draws the adjustment direction that said current tuning parameter need be adjusted;
Step b; Step-length adjustment unit in the said adjustment unit is confirmed the adjustment step-length of said current tuning parameter; Said adjustment step-length is the predetermined step-length of the said current tuning parameter of adjustment of storage, the step-length of perhaps said adjustment step-length for calculating according to said error signal analysis result;
Step c, the parameter adjustment unit in the said adjustment unit is adjusted said current tuning parameter according to said adjustment direction and said adjustment step-length;
Steps d is returned step 4 after adjusting said current tuning parameter.
6. method according to claim 5 is characterized in that, said initial value is one group of empirical value.
7. method according to claim 5; It is characterized in that; Said step 3 specifically comprises: the various parameters of said said transmitter of debugger object selected cell Cyclic Selection and said receiver are as said current tuning parameter, and realization is to the control of circular order, endless form and the cycle-index of said circulation.
8. method according to claim 7 is characterized in that, said various parameters comprise: the eye pattern crosspoint of the driven amplitude of transmitter, transmitter and the decision level of receiver.
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| CN101355404B (en) | 2008-09-04 | 2011-04-06 | 中兴通讯股份有限公司 | Apparatus and method for regulating transmitter parameter with optimization |
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| CN109696618A (en) * | 2019-02-21 | 2019-04-30 | 徐晨阳 | A kind of adjustment method of radio-frequency devices, device, equipment, storage medium and system |
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