Encoding method and device thereof and decoding method and device thereof

An encoding method and encoding technology, which are applied in the field of encoding methods and encoding devices, can solve problems such as the difficulty of finding methods and devices, and the lack of encoding and decoding methods and devices, and achieve high forward error correction and high gain. Effect

Inactive Publication Date: 2010-03-10
ZTE CORP
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Problems solved by technology

At present, there are various methods for realizing FEC encoding and decoding, but the methods and devices for realizing EFEC encoding and decoding are rare
[0003] At present, the demand for higher-gain FEC in the OTN transmission process is increasing, and it is difficult to find suitable methods and devices that can realize EFEC. Combined with the current specific requirements for OTN equipment, a reliable and practical method is proposed. A method and device for realizing EFEC encoding and decoding is very much needed

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  • Encoding method and device thereof and decoding method and device thereof
  • Encoding method and device thereof and decoding method and device thereof
  • Encoding method and device thereof and decoding method and device thereof

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Embodiment Construction

[0066] The method and device described in the present invention are mainly oriented to the field of OTN transmission, but are not limited to this field. As long as the data conforms to the format, the method and device of the present invention can be used for encoding and decoding. In the field of OTN transmission, the present invention can not only support the OTU1 protocol standard, OTU2 protocol standard and OTU3 protocol standard in the current Optical Channel Transport Unit (OTU) protocol standard, but also support future OTU4 and other future protocols. protocol standard.

[0067] The core idea of ​​the EFEC encoding and decoding of the present invention is to first encode the data stream according to the RS encoding rule, and then rearrange the data stream through interleaving into a BCH data stream format and encode according to the BCH rule. The data stream goes through two passes of encoding and automatic error correction, resulting in higher gain forward error corre...

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Abstract

The invention provides a forward error correction encoding method, comprising the following steps: encoding the data stream according to the Reed-Solomon (RS) rules; interweaving the data stream afterbeing encoded by RS to serve as the input data stream of the BCH encoding; and encoding the data stream after being interwoven according to the BCH rules. Accordingly, the invention also provides a forward error correction encoding device which is characterized by comprising an RS encoding module, an interweaving module and a BCH encoding module. Accordingly, the invention also provides a forwarderror correction decoding method, comprising the following steps: decoding the data stream according to the BCH rules; de-interweaving the data stream after being decoded by the BCH rules to serve asthe input data stream of the RS decoding; and decoding the data stream after being de-interwoven according to the RS rules. The invention provides a forward error correction device which is characterized by comprising a BCH decoding module, a de-interweaving module and an RS decoding module. The method and device above realize the forward error correction with higher gain.

Description

technical field [0001] The present invention relates to an encoding method and its encoding device, a decoding method and its decoding device, and in particular to a communication transmission network and an Optical Transport Network (OTN for short) related to an Enhanced Forward Error Correction (Enhanced Forward Error Correction) implementation. Error Correction (EFEC for short) encoding method and encoding device thereof, decoding method and decoding device thereof. Background technique [0002] With the further development of optical communication technology to longer distances and higher speeds, the call for higher gain forward error correction (Forward Error Correction, FEC) technology is getting louder and louder. In the new optical transmission protocol proposal In , Enhanced Forward Error Correction has been listed as a method to achieve error correction. However, the specific implementation method is not specified in the standard proposal. Currently, there are va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0065H04L1/0071H04L1/0057
Inventor 魏小义杨先超
Owner ZTE CORP
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