A coding modulation method, system, medium and electronic equipment

Abstract

The invention discloses a coding and modulation method, system, medium and electronic equipment. The method can first sort the code word bits based on the weight of the code word bits in the code word, and then determine the code word according to the code rate of the current code word. The corresponding sub-channel capacity is used to select the corresponding interleaving pattern to perform row-column interleaving of the sorted codewords, and write the codeword bits with higher weights into the row or column corresponding to the better sub-channel, so that the interleaving through the interleaver The processed codeword bits form a specific sorting method, which allows codeword bits with higher weights in the codeword to be mapped to better sub-channels during modulation processing, thereby achieving global optimization.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a physical layer bit interleaving modulation mapping technology in the field of wireless communication, and more specifically to a coding and modulation method, system, medium and electronic equipment. Background technique [0002] Information transmission in the field of wireless communication is inseparable from coding and modulation technology. [0003] Encoding is the process of converting information from one form or format to another. [0004] The so-called modulation means transforming the input signal to obtain a signal suitable for channel transmission, which can be divided into analog modulation and digital modulation technology. Coding and modulation technology is a core technology of digital communication system in the field of wireless communication. For a typical digital communication system, digital modulation mainly includes constellation mapping an...

AI Technical Summary

Problems solved by technology

However, due to the above-mentioned independent design, the encoder and the modulator cannot take into account the characteristics of each other. For example, there is a weight distribution in the codeword. Some codeword bits are important, and some codeword bits are not important. Since the encoding and modulation mapping are independent Designed, the modulator treats these codeword bits equally. Taking LDPC codes as an example, the weights of different nodes in the LDPC code composed of check nodes and variable nodes are different. In the modulation process, this weight is not considered different characteristics

Therefore, there will be a global performance loss, such as an increase in the bit error rate or frame error rate

[0006] It can be seen that in the prior art, the encoder and the modulator are separated and designed independently, which can achieve local optimality without mutual interference, but loses the global optimal performance under the joint design

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