Calculation method and device for LLR vector quantization and communication system

Abstract

The invention provides an LLR vector quantization calculation method and device and a communication system. The method comprises the following steps: acquiring an LLR value, wherein the LLR value is obtained by performing constellation mapping on bit information of a received code word; the LLR values are classified according to modulation modes of constellation mapping, a plurality of constellation symbols are obtained, the constellation symbols are vectors composed of a group of LLR values, and the numbers of the LLR values corresponding to the constellation symbols obtained in different modulation modes are different; the positive and negative LLR values corresponding to the constellation symbols are classified to obtain a plurality of subsets, and the product of two LLR values corresponding to any two constellation symbols in each subset is larger than or equal to 0; and performing vector quantization calculation on the constellation symbols of each subset to obtain a plurality of quantized vectors. According to the method, the minimum Euclidean distance or the maximum mutual information between constellation symbols does not need to be calculated, and the problem that the calculated amount of LLR vector quantization is large in the prior art is solved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, relates to a calculation method, device, computer-readable storage medium, processor, and communication system for LLR vector quantization. Background technique [0002] The fifth-generation (5G) mobile communication technology is called a new wireless air interface, which mainly meets the communication needs of three major application scenarios, namely enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (uRLLC) and massive machine communication (mMTC). ). Channel coding and decoding is the most basic technology of the physical layer, which will play a direct and indirect role in various performance indicators of the 5G system, especially putting forward high requirements on the reliability of the 5G system, and the hybrid automatic As an important technology to ensure reliability, HARQ (Hybrid Automatic Repeat Request, HARQ) is a ...

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Problems solved by technology

[0007] The main purpose of this application is to provide a calculation method, device, computer-readable storage medium, processor and communication system for LLR vector quantization, so as to solve the problem of large calculation amount of LLR vector quantization in the prior art

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