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Coding method and device

A coding device and coding method technology, applied in the direction of adjusting source coding, digital transmission system, forward error control, etc., can solve problems such as coding system performance degradation, achieve coding complexity and high power consumption, and ensure system The effect of reducing noise correlation

Active Publication Date: 2019-07-19
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this application is to provide a coding method and device, which solves the problem of performance degradation of the coding system caused by noise correlation

Method used

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  • Coding method and device

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0033] figure 1 It shows the structural block diagram of the communication system. At the sending end, the source provides the data stream to be sent; the encoder receives the data stream, encodes it, and sends the encoded data stream to the transmitter, and the transmitter converts the encoded The data stream is sent out through the channel. At the receiving end, the receiver receives the coded data stream, decodes it through the decoder, restores the original data, and sends it to the sink. Among them, the encoding method provided by this application is used for figure 1 The encoder shown is a very important link in the communication system.

[0034] The embodiment of the present application provides an encoding device, such as figure 2 As shown, including: (Staircase Error De-correlator DE-I...

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Abstract

The invention discloses a coding device. The coding device comprises a step code error code decorrelation interleaver (SEDI), a step code encoder, a step code error code decorrelation deinterleaver (SEDD) and an output unit. The SEDI is used for receiving the first information sequence and carrying out SEDI processing on the first information sequence to obtain a second information sequence. The step code encoder is used for performing step coding on the second information sequence to obtain a first check sequence. The SEDD is used for carrying out SEDD processing on the first check sequence to obtain a second check sequence. The output unit is used for receiving the first information sequence and combining and outputting the second check sequence and the first information sequence; or receiving the first information sequence at the next moment, and combining and outputting the second check sequence and the first information sequence at the next moment. The coding device disclosed by the invention can play a role in reducing noise correlation, the SEDD does not need to interleave the information sequence, and the coding complexity is relatively low.

Description

technical field [0001] The present application relates to the field of coding, in particular to a coding method and device for solving noise correlation. Background technique [0002] At present, the high-speed optical transmission network is developing in the direction of large capacity, packetization and intelligence. High-speed optical transmission networks need to use efficient forward error correction codes (Forward Error Correction, FEC) to combat optical damage in the optical transmission process (such as uncompensated dispersion, polarization mode dispersion, and nonlinear effects, etc.), and in the long-term Maintain a sufficiently low bit error rate during distance transmission. Among them, most FEC codes are designed under (Additive White Gaussian Noise, AWGN) additive white Gaussian noise. [0003] However, in an actual communication system, noise is correlated, and the correlation of noise will lead to performance degradation of the FEC code. The coding metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/08
CPCH04L1/0071H04L1/0061H04L1/0014
Inventor 马会肖符文君黄科超
Owner HUAWEI TECH CO LTD
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