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Code word synchronization method, receiver, network device and network system

A technology of codeword synchronization and synchronization conditions, applied in the field of communication, can solve problems such as adding redundant information

Pending Publication Date: 2021-10-19
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existence of the AM sequence is equivalent to inserting additional data in the data stream at the sending end, adding redundant information

Method used

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  • Code word synchronization method, receiver, network device and network system
  • Code word synchronization method, receiver, network device and network system
  • Code word synchronization method, receiver, network device and network system

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Embodiment Construction

[0059] Embodiments of the present application are described below in conjunction with the accompanying drawings.

[0060] Due to the influence of channel loss and noise, errors will occur when the signal is transmitted in the channel, which affects the reliability of the communication system. When the signal is expressed as a data sequence composed of multiple bits, the transmission error is specifically manifested as a change in the value of some bits in the data sequence, that is, an error bit occurs. FEC is a technology for controlling transmission errors in a communication system. In FEC technology, redundant information is sent together with the original data sequence for error recovery during transmission and to reduce the bit error rate. FEC can be divided into block codes and convolutional codes according to the different processing methods for information sequences. For block codes, it can be subdivided into linear block codes and nonlinear block codes. Taking the s...

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Abstract

The invention discloses a code word synchronization method, a receiver and network equipment. According to the method, alternative bits are determined from a plurality of bits of a data sequence received at a receiving end, a synchronization position is determined according to the alternative bits, and the synchronization position is used for indicating the initial position of a code word in the data sequence. The method is a self-synchronization method, the technical effect of high-precision code word synchronization of the data stream at the receiving end can be realized without inserting additional data into the data stream at the sending end, and the synchronization performance of the method achieves relatively high reliability.

Description

technical field [0001] The present application relates to the communication field, and in particular to a codeword synchronization method, a receiver, a network device and a network system. Background technique [0002] With the improvement of the production technology level, the loss and noise of the channel have become the key factors limiting the data transmission rate and distance. The emergence of forward error correction (Forward Error Correction) provides error correction protection for data in transmission, thereby improving the data transmission rate and transmission distance of the channel. FEC can be divided into block code (block code) and convolutional code (convolutional code) according to different processing methods for information sequences. For block codes, it can be subdivided into linear block codes and non-linear block codes. Linear block code is used in the physical layer (physical layer) and the data link layer (data link layer) media access control ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L7/033
CPCH04L1/0057H04L7/033
Inventor 任浩何向王心远
Owner HUAWEI TECH CO LTD
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