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Method, device, equipment and communication system for modulation coding and demodulation decoding

A technology for modulating, encoding and decoding information, applied in the direction of modulation carrier system, encoding, transmission system, etc., can solve the problems of decreased transmission distance, error bit rate, etc., and achieve the goal of improving accuracy, reducing bit error rate, and increasing transmission distance Effect

Pending Publication Date: 2022-01-18
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

In the next-generation higher-speed optical transmission system, in order to use bandwidth and power more effectively, high-order modulation methods are used, such as 8 quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM), 16QAM, 64QAM, etc., but higher modulation orders Leading to a worse bit error rate, the transmission distance is greatly reduced

Method used

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  • Method, device, equipment and communication system for modulation coding and demodulation decoding
  • Method, device, equipment and communication system for modulation coding and demodulation decoding
  • Method, device, equipment and communication system for modulation coding and demodulation decoding

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Embodiment Construction

[0119] Embodiments of the present application provide a method, device, device, and communication system for modulation and encoding, demodulation and decoding, and the communication system includes at least two communication devices that can serve as a sending end and a receiving end, respectively. Wherein, the modulation and encoding method may be performed by the communication device as the sending end, and the demodulation and decoding method may be performed by the communication device as the receiving end.

[0120] Below, the two communication devices are described separately:

[0121] Such as figure 1 As shown, the communication device as the sending end includes a classification unit 101 , an encoder (including an encoder 102 a and an encoder 102 b ), and a mapping unit 103 . Wherein, the classifying unit 101 is used for classifying the bits to be transmitted into multiple classes. The encoder is used to encode the hierarchical bits to obtain multi-level codewords. ...

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Abstract

The invention discloses methods, devices and equipment for modulation coding and demodulation decoding, and a communication system, and belongs to the technical field of communication. The modulation and coding method comprises the following steps: dividing bits to be transmitted into multiple levels, and coding the graded multiple levels of bits to obtain multiple levels of code words; and mapping the multi-level code words onto the symbols in a staggered manner, wherein the multi-level code word comprises a first code word, the first code word is located at the Yth level of the multi-level code word, and the first code word is overlapped with at least one code word in any level except the Yth level. Therefore, the code words of different levels are associated through the mapped symbols, so that the overlapped parts among the code words can assist in demodulation mutually, and the accuracy of demodulation and decoding is improved. Therefore, the bit error rate can be effectively reduced, and the transmission distance of the optical transmission system is improved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method, device, device, and communication system for modulation and encoding, demodulation and decoding. Background technique [0002] The explosive growth of Internet services has promoted the transmission rate of optical transmission network lines to gradually develop from 100Gbps to 400Gbps, and then to 800Gbps or even 1Tbps. In the next-generation higher-speed optical transmission system, in order to use bandwidth and power more effectively, high-order modulation methods are used, such as 8 quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM), 16QAM, 64QAM, etc., but higher modulation orders As a result, the bit error rate is worse, and the transmission distance is greatly reduced. [0003] Therefore, how to effectively reduce the bit error rate and increase the transmission distance of the optical transmission system is a problem w...

Claims

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Application Information

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IPC IPC(8): H04B10/25H04L27/00H04L27/36H04L27/38
CPCH04B10/25H04L27/0014H04L27/36H04L27/38H03M13/251H03M13/258H03M13/255H04L27/34H04B10/516H04B10/69
Inventor 喻凡肖治宇巩伟云
Owner HUAWEI TECH CO LTD
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