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Method and apparatus for testing error rate based on high speed serial interface encoded mode

A high-speed serial interface and bit error rate testing technology, applied in the field of bit error rate testing, can solve the problem of limited reference value of bit error rate, impossibility of testing, real-time channel quality of the channel to be tested, real-time bit error rate cannot be tested, etc. problem, to achieve the effect of high reference value

Active Publication Date: 2009-05-27
DATANG MOBILE COMM EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

[0006] Existing test methods require the use of external equipment—a bit error tester to test the bit error rate. When the distance of the channel to be tested is long enough, it will become very difficult to connect the test interface of the bit error tester to the interface of the channel to be tested. Difficult, basically impossible to test
In addition, the above test method can only be used to test the channel bit error rate through PRBS, which cannot be tested with the real-time channel quality and real-time bit error rate of the channel to be tested, and the reference value of the tested bit error rate is limited

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  • Method and apparatus for testing error rate based on high speed serial interface encoded mode
  • Method and apparatus for testing error rate based on high speed serial interface encoded mode
  • Method and apparatus for testing error rate based on high speed serial interface encoded mode

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Embodiment Construction

[0054] The core idea of ​​the present invention is: at present, the bit error rate of the channel is mostly measured by a bit error tester. Although the bit error rate test of the channel has been realized to a certain extent, the influence of the channel distance on the peripheral equipment is relatively obvious. , the tested bit error rate is only the channel quality index at that time, and the reference value is limited. In view of the above situation, the present invention makes full use of the encoding rules of the high-speed serial interface encoding, counts the encoding groups that do not conform to the encoding rules when decoding data, and realizes the calculation of the data bit error rate according to the total amount of channel transmission data. The present invention can realize the test of the bit error rate only by setting the encoding rule matching algorithm at the data receiving end, and the encoding rule matching algorithm is also required in the decoding proc...

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Abstract

The invention discloses a method for testing code error rate based on a high-speed serial interface coding mode and relates to code error rate testing technology which is provided for solving the problems that the prior code error rate testing mode can not properly test the bit error rate of a signal channel and is complex. The method comprises the following technical proposal: in decoding, the number of code sets which do not meet a coding rule is counted; and the total quantity of transmitted data is calculated so as to determine the code error rate. The invention simultaneously discloses adevice for realizing the method. The method does not need to mount an external code error testing instrument; the calculated code error rate is real-time code error rate of the signal channel and directly reflects the transmission quality of the signal channel; and the tested code error rate has high reference value.

Description

technical field [0001] The present invention relates to a bit error rate testing technology, more precisely to a bit error rate testing method and device based on a high-speed serial interface coding mode. Background technique [0002] As the demand for information flow continues to grow, the traditional parallel interface technology has become a bottleneck to further increase the data transmission rate. Serial communication technology is replacing the traditional parallel bus and becoming the mainstream of high-speed interface technology. [0003] The high-speed serial interface adopts differential signal transmission instead of single-ended signal transmission, thereby enhancing the anti-noise and anti-interference ability, and adopts clock and data recovery technology instead of transmitting data and clock at the same time, thereby solving the signal clock offset problem that limits the data transmission rate . Therefore, the application of high-speed serial interfaces ...

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Application Information

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IPC IPC(8): H04L1/00H04L1/20H04L1/24
Inventor 罗斌刘晓琳吴永海王洪波周志国徐黎王婷
Owner DATANG MOBILE COMM EQUIP CO LTD
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