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Method and device for performance evaluation of forward error correction (fec) codes

A technique of forward error correction, performance, the application of which is evident in the detailed description and drawings, the performance of FEC, optimizing the performance of intelligent networks, a major aspect involving the absence of FEC, some instruments can also use this algorithm to check performance) Situation, the implementation form of the step is in the dependent claims, the performance field of the optical network, can solve the problems of high complexity, impossibility to realize, multi-work, etc., and achieve the effect of reducing complexity, reducing processing complexity, and saving high-complex encoders

Inactive Publication Date: 2014-12-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

The third method requires more work to implement FPGA
Due to the high complexity of this setup, it is almost impossible to implement when different FEC code designs 901 should be investigated

Method used

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  • Method and device for performance evaluation of forward error correction (fec) codes
  • Method and device for performance evaluation of forward error correction (fec) codes
  • Method and device for performance evaluation of forward error correction (fec) codes

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Embodiment Construction

[0095] figure 1 A schematic diagram of a method 100 for evaluating the performance of a first forward error correction code according to an implementation form is shown. Method 100 is used to evaluate the performance of a forward error correction code used to encode a known sequence of transmitted data signals.

[0096] The method 100 includes receiving (101) via a communication channel a sequence of received data symbols responsive to transmission of a known sequence of transmitted data symbols, wherein the known sequence of transmitted data symbols is transmitted via the communication channel without being encoded by a forward error correction code .

[0097] The method 100 further includes providing (103) an extended parity bit sequence based on the known transmitted data symbols and based on the parity check matrix of the forward error correction code.

[0098] The method 100 further includes providing (105) the performance of the forward error correction code based on ...

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Abstract

Method for evaluating the performance of different forward error correction codes in communication systems which require low bit error rates, in particular in optical transmission systems, comprising: receiving from a transmission channel uncoded data symbols; separating a codeword vector and a noise vector, so that the noise vector is dependent on the transmitted data when non-linear effects occur; encoding known data bits using a parity check matrix of the code to obtain parity symbols; adding the noise vector to the encoded bits; and providing the performance of the forward error correction for ex¬ ample by counting errors.

Description

Background technique [0001] The present invention relates to a method and apparatus for evaluating the performance of a forward error correction (FEC) code, in particular, a method and apparatus for evaluating the performance of FEC implemented in digital signal processing of a coherent optical receiver. The invention also relates to a method and a device for optimizing the performance of an intelligent network, in particular an optical network. [0002] An important goal of long-haul fiber optic systems is to send the highest data throughput over the longest distances without signal regeneration in the optical domain. For a given constraint on the bandwidth utilized by the optical amplifier and ultimately by the fiber itself, it is important to maximize the spectral efficiency. According to 'E.Ip and J.M.Kahn, "Digital equalization of chromatic dispersion and polarization mode dispersion", Journal of Lightwave Technology 25 pp. 2033-2043 (2007)', with a coherent receiver Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/01
CPCH03M13/2906H03M13/116H03M13/1515H03M13/118H03M13/152H03M13/015G06F11/079
Inventor 内博伊沙·斯托亚诺维奇赵羽
Owner HUAWEI TECH CO LTD
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