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A demodulation and decoding method and device

A decoding and demodulation technology, which is applied in the field of demodulation and decoding, can solve the problems that bit demodulation information cannot be bit demodulated, and cannot make full use of the performance benefits of the iterative process, so as to achieve the effect of improving decoding performance

Active Publication Date: 2020-11-03
HUAWEI TECH CO LTD
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Problems solved by technology

[0006] In view of this, the embodiment of the present invention proposes a method and device for demodulation and decoding, which solves the problem that the demodulation information of the first demodulated bit cannot be used for demodulation of other bits in the same symbol, and the iterative process cannot be fully utilized to The Problem with Gaining Performance Gains

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  • A demodulation and decoding method and device
  • A demodulation and decoding method and device
  • A demodulation and decoding method and device

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Embodiment Construction

[0052] It should be understood at the outset that, although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather be within the scope of the appended claims and their equivalents Modified within the full range of .

[0053] Coding and modulation, as the two most basic technologies in the field of communication, both aim to achieve efficient and error-free information transmission. In order to adapt to the development of communication technology and meet the needs of large-capacity transmission, the two need to be jointly designed. Among them, the coding technology can detect and correct a single error bit or a n...

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Abstract

Disclosed are a method and device for demodulation and decoding, relating to the field of modulation and encoding in mobile communications. The method comprises: receiving a symbol sequence, demodulating a first group of bits in a first symbol, and obtaining second soft information about the first group of bits according to a demodulation result of and apriori information about the first group of bits, wherein the first group of bits comprise bits belonging to a first code word; and by parity of reasoning, obtaining second soft information about the first group of bits in N symbols, decoding the second soft information about the first group of bits in the N symbols, and according to a decoding result and the second soft information, obtaining first extrinsic information about the first group of bits in the N symbols, wherein the first extrinsic information about the first group of bits may be used for demodulating a second group of bits, and the second group of bits comprise bits belonging to a second code word. In the embodiments of the present invention, the method for firstly demodulating first extrinsic information about a bit may be used for demodulating other bits in the same symbol, thus making full use of an iterative process to obtain performance gains.

Description

technical field [0001] The invention relates to the technical field of modulation and coding of mobile communication, in particular to a demodulation and decoding method and device. Background technique [0002] Coding and modulation are two of the most fundamental concepts in the field of communication. Coding technology introduces some detectable and identifiable redundant information to the useful information sent. After channel transmission and noise influence, the redundant information can be used to detect and correct at the receiving end, and restore the correct original sent information. Essentially, channel coding is to increase the system bandwidth to obtain coding gain. Modulation maps binary bit information into symbols for transmission, which can realize conversion between Signal-to-Noise Ratio (SNR) and bandwidth. In a system with a limited frequency band, the information transmission rate can be increased by increasing the modulation order to achieve the sam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/00
Inventor 张昌明蔡梦
Owner HUAWEI TECH CO LTD
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