Information encoding method and device thereof

Abstract

The invention provides an information coding method and a device thereof, and the method comprises the steps: selecting log2M-1 constellation point sets from a first constellation diagram of M-order quadrature amplitude modulation; selecting S constellation point sets from the log2M-1 constellation point sets; wherein the occurrence probability of constellation points in a second constellation diagram formed by the S constellation point sets meets a preset forming probability; for the number of constellation points in each constellation point set in the S constellation point sets, determiningthe digit of a block code word corresponding to the constellation point set; selecting a code word conforming to the digit and value of the block code word from the to-be-transmitted sequence as a pre-mapping code word; and after the digit of the block code word corresponding to each constellation point set is supplemented to the log2M digit according to a zero supplementing mode, obtaining a mapped code word corresponding to the code word before mapping, and sending the mapped code word. Thus, the constellation point set meeting the preset forming probability is selected, the probability forming coding algorithm with extremely low complexity is achieved, and the method can be suitable for various systems.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to an information coding method and device. Background technique [0002] In the field of communication, digital signals are often represented on the complex plane to intuitively represent signals and the relationship between signals. Usually, the distribution diagram of signal vector endpoints is called a constellation diagram. In the prior art, before the signal transmitting end sends the information sequence to be transmitted, probability shaping coding is performed on the information sequence to be transmitted by adding redundant bits according to the corresponding constellation diagram. [0003] However, since the probabilistic shaping coding in the prior art increases with the code length of the information sequence to be transmitted, the coding complexity will increase exponentially. Contents of the invention [0004] The purpose of the embodiments o...

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Problems solved by technology

[0003] However, as the probabilistic shaping coding in the prior art increases with the code length of the information sequence to be transmitted, the complexity of the coding will increase exponentially

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