Anti-radiation RS code decoding circuit

A decoding circuit and anti-radiation technology, which is applied in the field of anti-radiation RS code decoding circuit, can solve the problems of inconsistent module control, low circuit reliability, and unequal running time, so as to improve reliability and stability, improve circuit performance, the effect of reducing the circuit area

Active Publication Date: 2020-05-15
BEIJING MXTRONICS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional RS code decoding circuit design adopts the state machine in the overall control and the internal control of the module. Such a design will have some problems in the space application: first, the running time of each module is not equal, and the data between the modules is not continuous. The performance of the decoder is not high; secondly, there are many state machines, and any single event reversal in any state machine will cause inconsistency between the control of each module, and a decoding function error will occur, causing the RS decoding circuit to fail to work normally. less reliable

Method used

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  • Anti-radiation RS code decoding circuit

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Embodiment 1

[0032] The invention discloses a radiation-resistant RS code decoding circuit, which uses a counter to generate all control signals, and the generation of the control signals is that the counter generates each fixed value. The centralized control method generates the start signal and reset signal of each module, and refreshes each module regularly. When the radiation-resistant RS code decoding circuit is applied in space, assuming that the counter is overturned by a single event and the count value jumps from n to m, then the counter will continue to count from m, and all the control signals generated are still synchronous, which will not cause decoding At the same time, the counter will continue to operate until the counter is cleared, and the initial state can be restored without ground remote control. In this way, there is only one frame of data decoding error, and then it will enter the normal decoding state, which improves the reliability of the circuit. Second, in space...

Embodiment 2

[0041] On the basis of the above-mentioned embodiments, the specific implementation of each main module in the anti-radiation RS code decoding circuit will be described below.

[0042] In this example, if figure 2 , the specific implementation of the adjoint calculation module is as follows: in the first clock cycle, the input message symbol r 207 and polynomial coefficients a 0 , r 207 and a 0 After multiplication, the syndrome S is output 0 The initial value of S 0 ’; second clock cycle, syndrome S 0 Initial value plus the second message symbol r 206 , then multiplied by a 0 , the output syndrome S 0 One iteration value S 0 "; and so on, at the 208th clock cycle, the syndrome S is obtained 0 the final value of . For other polynomial coefficients a 1 ~a 10 , using the above calculation method, the syndrome S is obtained respectively 1 ~S 15 the final value of . in, figure 2 dff0 ~ dff15 in represent 16 D flip-flops.

[0043] In this embodiment, because the f...

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Abstract

The invention discloses an anti-radiation RS code decoding circuit. The circuit comprises: an adjoint calculation module used for calculating the received code word R(x) to obtain an adjoint polynomial S(x); a key equation solving module used for carrying out key equation solving on the adjoint polynomial S(x) to obtain an error position polynomial [lambda](x) and an error value polynomial [omega](x); an error pattern searching module used for calculating to obtain an error position and an error value corresponding to the error position; a data caching module used for caching the received codeword R(x); and an error correction output module used for reading the code word R(x) cached in the data caching module, performing error correction on the read cached code word R(x) according to theerror position calculated by the error pattern search module and the error value corresponding to the error position, and outputting a code word C. According to the anti-radiation RS code decoding circuit, the area of the circuit is reduced, the power consumption of the circuit is reduced, and the reliability of the circuit is enhanced while the performance of the circuit is improved.

Description

technical field [0001] The invention belongs to the technical field of aerospace-grade RS decoding circuit design, and in particular relates to a radiation-resistant RS decoding circuit. Background technique [0002] RS (Reed-Solomon) code is a kind of multivariate BCH code with strong error correction ability. It can not only correct random errors, but also correct burst errors. It is especially suitable for communication systems with very complex channel interference. In practical engineering applications in very broad. [0003] The traditional RS code decoding circuit design adopts the state machine in the overall control and the internal control of the module. Such a design will have some problems in the space application: first, the running time of each module is not equal, and the data between the modules is not continuous. The performance of the decoder is not high; secondly, there are many state machines, and any single event reversal in any state machine will cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/15
CPCH03M13/1515
Inventor 王佩乐立鹏安印龙方新嘉魏星权晶楚晓梅陈战王兆辉王琰
Owner BEIJING MXTRONICS CORP
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