CN1996827B - An intelligent control method for the determination point of the optical receiver - Google Patents
An intelligent control method for the determination point of the optical receiver Download PDFInfo
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- CN1996827B CN1996827B CN2006100326177A CN200610032617A CN1996827B CN 1996827 B CN1996827 B CN 1996827B CN 2006100326177 A CN2006100326177 A CN 2006100326177A CN 200610032617 A CN200610032617 A CN 200610032617A CN 1996827 B CN1996827 B CN 1996827B
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- 230000003287 optical effect Effects 0.000 title claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 16
- 238000000605 extraction Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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Abstract
This invention discloses one intelligent control method of light receive judgment point, which comprises the following steps: when received zero codes is changed into one code with number larger than corrected number of zero code and improving receive judgment point; when the zero code is changed into one zero with number less than zero time number to lower judgment point; when the zero code is changed into one code number with same to the corrected zero number closing the adjustment.
Description
Technical field
The invention belongs to digital fiber transmission system technical field, relate to a kind of intelligence control method of realizing at the light signal receiving terminal, relate in particular to a kind of intelligence control method of optical receiver determination point.
Background technology.
The sharpest edges of Optical Fiber Transmission are in the prior art; Solved the signal transmission of long distance or extra long distance (tens kilometers), and be the transmission that can't harm, extremely scabrous problem is able to reasonable solution in the middle of these feasible many engineerings in the past; Greatly expanded range of application; In many specific occasions, the occasion very bad like electromagnetic environment, as: warship, transformer station, power station etc.The anti-interference characteristics of Optical Fiber Transmission are able to give full play to, and have expanded the scope that the signal transmission is used, and the thoughtcast of simultaneously full optical fiber is compared with the pattern of conventional analogue cable; Its advantage is self-evident, also must bring a lot of new chance and growth point, and this is confirmed; And under many occasions; The integrated cost of digital fiber pattern can be compared with simulation, cable mode, even possibly also will hang down, and this provides possibility for later extensive application.
But light signal is after long distance transmission in the prior art, and multi-form distortion can take place the eye pattern of light signal, has caused signal extraction and signal to recover all very difficulty, has caused a large amount of generation of error code, has had a strong impact on the quality of signal transmission.
Summary of the invention
Provided by the present invention is a kind of intelligence control method of light-receiving determination point, has solved the problem of the eye pattern deformation of light signal, has improved efficiency of transmission and transmission range, and has significantly reduced the generation of error code.
For solving the problems of the technologies described above, technical scheme of the present invention comprises:
A kind of intelligence control method of optical receiver determination point, described intelligence control method may further comprise the steps:
A, when 0 yard of receiving through become after the error correction 1 yard count value number greater than 1 yard that receives when becoming 0 yard the number of count value after the error correction, receive the determination point level and heighten;
B, when 0 yard of receiving through become after the error correction 1 yard count value number less than 1 yard that receives when becoming 0 yard the number of count value after the error correction, receive the determination point level and turn down;
C, when 0 yard of receiving through become after the error correction 1 yard count value number with 1 yard that receives through the number that becomes 0 yardage numerical value after the error correction when balanced mutually, the adjustment end.
Described intelligence control method, wherein, described intelligence control method is further comprising the steps of:
D, powering on when initial, inserting the back phase place is adjusted detecting for the first time the normal light signal.
Described intelligence control method, wherein, described intelligence control method is further comprising the steps of:
E, obtaining phase place when instruction adjustment, after the adjustment of determination point level is accomplished, phase place is adjusted.
Adopt method provided by the present invention, can make control appliance search out the optimum signal determination point, and can be with 0 in the data code flow; 1 signal recovers out more accurately; Make receiver on performances such as signal extraction and recovery, obtain largest optimization, improved receiving sensitivity, reduced the generation of error code; Simultaneously improve efficiency of transmission greatly, significantly increased transmission range.
Description of drawings
Fig. 1 is the intelligence controlling device sketch map among the present invention;
Fig. 2 is the intelligence controlling device schematic flow sheet among the present invention;
Fig. 3 is that decision level of the present invention is adjusted flow chart automatically;
Fig. 4 is that judgement phase place of the present invention is adjusted flow chart automatically;
Wherein, E is an opto-electronic conversion among Fig. 1, and J is a decision circuit, and H is synchronous and overhead extraction; S is that check code generates, and C is that the error code statistics is extracted, and M is judgement control, a: the number that is 0 error code; B is the number of 1 error code, and t is the decision threshold adjustment, and p is the adjustment of judgement phase place.
Embodiment
Below will combine the accompanying drawing of giving, carry out comparatively detailed explanation to preferred embodiment of the present invention.
Like Fig. 1 and shown in Figure 2, provided by the present invention is a kind of intelligence control method of light-receiving determination point, has solved the problem of the eye pattern deformation of light signal, has improved efficiency of transmission and transmission range, and has significantly reduced the generation of error code.
Like Fig. 1 and shown in Figure 2, when the error code detection system was arranged, 0,1 the error code numeration that utilizes detected error code circuit was for according to calculating, and decision level is adjusted up and down; And to power on when initial, perhaps when obtaining phase place adjustment instruction, phase place adjusted accordingly.
As shown in Figure 2; When triggering the instruction of appointment, decision circuit will be for information about synchronously and overhead extraction, generate the extraction of check code and error code statistics simultaneously; And said check code will enter into said error code statistics and extract; Said error code statistics is extracted number a with 0 error code and is sent to judgement with 1 error code number b and controls, and when a＞b, thresholding is heightened; When b＞a, then thresholding is turned down; Work as a=b=0, perhaps a=b then adjusts end when promptly 0 error code number is balanced mutually with 1 error code number, and will adjust strategy and resend to said decision circuit.Wherein, said 0 yard error code be receive be 0 yard through becoming 1 yard count value after the error correction.Said 1 yard error code be receive be 1 yard through becoming 0 yard count value after the error correction.This shows, the present invention compared with prior art, technical scheme of the present invention has improved receiving sensitivity, has reduced the generation of error code.
Below will combine Fig. 1 and Fig. 2 further technical scheme of the present invention to be carried out detailed explanation.
As shown in Figure 1; When line status worsens, error code will appear in the transmission course, and can adjust signal judgement basic point this moment according to the number a of said 0 error code and the different conditions of said 1 error code number b error code; So that determination point is in optimum state, improve the receiving sensitivity of receiver.
As shown in Figure 2, at first carry out the adjustment of incoming level, when will receiving decision level during greater than b, a adjusts downwards; Adjust upward when a will receive decision level during less than b, thereby make error code a and b be in the state of equity as far as possible, and then phase place is finely tuned, make error code a and b further realize reciprocity state; But above step needs certain time interval to make determination point stable, thereby reaches the purpose of stability line line state.When finding relative optimal judgement point, finish one and take turns adjustment.
Like Fig. 3 and shown in Figure 4, after error code appears in signal transmission, at first decision level is adjusted according to the difference of 0,1 error code, when being zero, difference minimum or error code stop adjusting to, then, search suitable judgement phase place according to the situation of setting again; But phase place will be adjusted according to error condition and trend, so that obtain the minimum optimum of error code.It is thus clear that, adopt the present invention to improve efficiency of transmission greatly, significantly increased transmission range.
Below will combine Fig. 3 and Fig. 4 technical scheme more of the present invention to be described.
As shown in Figure 3, when decision level when the adjustment time meets the demands automatically, calculate the difference of said 1 error code and 0 error code,, difference ends adjustment process when being zero; If when last time, adjustment was not negative justification, stop the adjustment state, further judge whether to be the initial regulating command of perhaps receiving that powers on, if not, then stop adjustment, if then phase place is adjusted; When if last time, adjustment was negative justification, readjusting the adjustment state is the forward adjustment, and decision level continues adjustment downwards; If when last time, adjustment was not positive justification, stop the adjustment state, further judge whether to be the initial regulating command of perhaps receiving that powers on, if not, then stop adjustment, if then phase place is adjusted; When if last time, adjustment was positive justification, readjusting the adjustment state is the negative sense adjustment, and decision level continues to adjust upward.
As shown in Figure 4, the self-adjusting idiographic flow of judgement phase place is following among the present invention:
Decision level is adjusted automatically, judges whether then to be to power on initial or to receive regulating command, if not, return results then; If, then further phase place is adjusted, pointwise is tested phase place and is noted down the error code number then, finds the minimum corresponding working point of error code, writes down said working point, and writes the control corresponding device, last return results.Because error code can appear in the adjustment of judgement phase place, need under situation about allowing, carry out again.Simultaneously should be after the level adjustment finishes.
In sum, adopt method provided by the present invention, make receiver on performances such as signal extraction and recovery, obtain largest optimization; Improved receiving sensitivity; Reduce the generation of error code, improved efficiency of transmission greatly simultaneously, significantly increased transmission range.
Should be understood that the comparatively detailed explanation of more than carrying out to patent of the present invention should not be construed as the protection range of patent of the present invention, the protection range of patent of the present invention should be as the criterion with accompanying claims.
Claims (3)
1. the intelligence control method of an optical receiver determination point; Described intelligence control method may further comprise the steps: after error code appears in the signal transmission; At first the determination point level is adjusted, stopped when difference minimum or error code are zero adjusting to, then according to the difference of the number of the number of 1 yard error code and 0 yard error code; Carry out the phase place adjustment according to error condition and trend again, so that obtain the minimum optimum of error code; Wherein, said 0 yard error code is to become 1 yard count value after the 0 yard process error correction that receives, and said 1 yard error code is to become 0 yard count value after the 1 yard process error correction that receives; And, receive the determination point level and heighten when the number of said 0 yard error code during greater than the number of said 1 yard error code; When the number of said 0 yard error code during, receive the determination point level and turn down less than the number of said 1 yard error code; When the number of the number of said 0 yard error code and said 1 yard error code was balanced mutually, adjustment finished;
Wherein, the said step to the adjustment of determination point level comprises:
When determination point level when the adjustment time meets the demands automatically, calculate said difference;
, said difference ends adjustment process when being zero;
When said difference is correct time: if adjusted last time when being not negative justification; Stop the adjustment state, the determination point level is stepped back one step of adjustment, further judge whether to powering on initial or receiving regulating command; If not; Then stop adjustment, if then phase place is adjusted, the minimum working point of error code is found in the pointwise test; When if last time, adjustment was negative justification, putting the adjustment state is the forward adjustment, and the determination point level continues adjustment downwards;
When said difference is not correct time: if adjusted last time when being not positive justification; Stop the adjustment state, the determination point level is stepped back one step of adjustment, further judge whether to powering on initial or receiving regulating command; If not; Then stop adjustment, if then phase place is adjusted, the minimum working point of error code is found in the pointwise test; When if last time, adjustment was positive justification, putting the adjustment state is the negative sense adjustment, and the determination point level continues to adjust upward.
2. intelligence control method according to claim 1 is characterized in that, is powering on when initial, inserts the back phase place is adjusted detecting for the first time the normal light signal.
3. intelligence control method according to claim 1 is characterized in that, when receiving phase place adjustment instruction, after the adjustment of determination point level is accomplished, phase place is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100326177A CN1996827B (en) | 2005-12-31 | 2005-12-31 | An intelligent control method for the determination point of the optical receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100326177A CN1996827B (en) | 2005-12-31 | 2005-12-31 | An intelligent control method for the determination point of the optical receiver |
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| Publication Number | Publication Date |
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| CN1996827A CN1996827A (en) | 2007-07-11 |
| CN1996827B true CN1996827B (en) | 2012-05-16 |
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| CN2006100326177A Expired - Fee Related CN1996827B (en) | 2005-12-31 | 2005-12-31 | An intelligent control method for the determination point of the optical receiver |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1633793A (en) * | 2002-04-16 | 2005-06-29 | 思科技术公司 | Optimum threshold using forward error correction information |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1633793A (en) * | 2002-04-16 | 2005-06-29 | 思科技术公司 | Optimum threshold using forward error correction information |
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Granted publication date: 20120516 |