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Parallel implementation method and device for reed-solomon (RS) code

An implementation method and coding technology, applied in the field of optical communication, can solve the problems of increased system transmission rate and low coding efficiency of RS code, and achieve the effect of great flexibility

Active Publication Date: 2013-01-16
FENGHUO COMM SCI & TECH CO LTD +1
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem that the RS code coding efficiency is not high, which restricts the improvement of the transmission rate of the whole system

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  • Parallel implementation method and device for reed-solomon (RS) code

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The RS coding parallel implementation method provided by the present invention is as figure 2 shown, including the following steps:

[0029] Step S10, determine the generator polynomial G(x) of the RS code according to the parameters m, n, and k, and judge whether k and (n-k) are divisible by H. Among them: m is an integer greater than zero, and the Galois field is determined to be GF (2 m ), n is the length of the RS codeword, k is the length of the information bits in the RS codeword, and H is the degree of parallelism that needs to be realized, that is, the number of symbols that need to be processed by the encoder at one time. G(x) can be based on parameters m, n, k and GF(2 m ) of the original polynomial, combined with look-up table or using matlab or other tools to generate.

[0030] Step S20, according to whether (n-k) is divisible by H, determine ...

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Abstract

The invention discloses a parallel implementation method and a parallel implementation device for a reed-solomon (RS) code. The method comprises the following steps of: determining a generating polynomial G(x) of an RS code according to parameters m, n and k, judging whether k and (n-k) can be exactly divided by H; selecting a corresponding parallel code implementation structure according to the condition whether (n-k) can be exactly divided by H; calculating a coefficient of a constant coefficient multiplier in the parallel code implementation structure according to the generating polynomial G(x); determining whether zero-fill or zero-suppression processing is required according to the condition whether k can be exactly divided by H; determining control of feedback door control signal, and input enabling and output selection signals in the parallel code implementation structure according to the parameters n, k and H; and outputting a parallel coding result. The parallel implementation method and the parallel implementation device are suitable for the parallel implementation of an arbitrary RS code pattern on a Galois Field (GF)(2m) under arbitrary parallelism degree H (H is not greater than k).

Description

Technical field [0001] The invention relates to optical communication technology, in particular to a parallel realization method and device of RS coding. Background technique [0002] With the development of optical communication towards ultra-high speed and ultra-large capacity, synchronous digital hierarchy (referred to as SDH) structure, dense wavelength division multiplexing (Dense Wavelength Division Multiplexing, referred to as DWDM) system, all-optical network and Optical cross-connect and other technologies are continuously applied in optical fiber communication systems, making the line rate reach 10Gbps, 40Gbps and 100Gbps or even higher. [0003] The effectiveness and reliability of transmission are a pair of contradictions: on the one hand, the substantial increase in transmission rate, dispersion, nonlinear effects, and receiver performance have also become the main factors restricting system performance. On the other hand, the expansion of system capacity will ...

Claims

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Application Information

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IPC IPC(8): H03M13/15
Inventor 胡烽朱齐雄董航
Owner FENGHUO COMM SCI & TECH CO LTD
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