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Space-time two-dimensional channel coding method

A channel coding and spatial coding technology, applied in electrical components, digital transmission systems, error prevention, etc., can solve the problems of delay, reliability and transmission rate compromise, inability to meet reliability requirements, inflexibility, etc. Effectiveness of reliability, reduced latency, simplified communication protocol

Pending Publication Date: 2022-02-15
SOUTHEAST UNIV
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  • Claims
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Problems solved by technology

However, in the uRLLC scenario, due to the limitation of delay, the block length is short and cannot meet the required reliability requirements
In addition, this method of encoding only in the time domain is not flexible enough to compromise between delay, reliability and transmission rate.

Method used

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Embodiment 1

[0068] Embodiment 1: see figure 1 , a spatio-temporal two-dimensional channel coding method, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, since the detailed description of some known technologies and functions may dilute the content of the present invention, these descriptions will be omitted here.

[0069] Consider a MIMO system with a total of N t root transmit antenna, N r Root receiving antenna, there are S data bits to be sent. First, the transmitter sends pilots, and the receiver performs channel estimation. Assuming that the channel is a flat fading channel, if it is a frequency selective fading channel, it can be converted into a flat fading channel in the frequency domain by using the Orthogonal Frequency Division Multiplexing (OFDM) technology. Since this ...

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Abstract

The invention relates to a space-time two-dimensional channel coding method, which comprises the following steps that: channel coding is respectively carried out on data needing to be transmitted from a time domain and a space domain to form space-time two-dimensional coding, and different coding structures, coding rates and modulation modes are used for the channel coding of the space domain and the channel coding of the time domain; secondly, the system represents each coding mode with code words, the code words are combined to form a space-time two-dimensional code book, the space-time two-dimensional code book is stored at a receiving end and a transmitting end, next, the transmitting end selects a coding structure according to the code words of the time domain, codes each data stream according to the coding rate of the time domain, and finally data blocks with the same length in the time domain are formed through rate matching; then, the system selects different code word serial numbers, rate matching tables and space-time slicing modes according to the requirements of different scenes for transmission rates, time delays and bit error rates, channel states and the sizes of data blocks needing to be transmitted; and finally, when the space-time cascade coding mode is adopted, the transmitting end carries out time domain coding according to the time domain slicing mode and the time domain code word.

Description

technical field [0001] The invention relates to a two-dimensional coding transmission method based on time and space, which can meet the requirements of time delay, bit error rate and transmission rate in different scenarios, and belongs to the field of channel coding in mobile communication systems. Background technique [0002] As the fifth-generation mobile communication system (5G) enters the commercial stage, the research and development of the sixth-generation mobile communication system (6G) is on the agenda. Countries and major technology companies and R&D institutions are vying for deployment. Earlier, the Ministry of Science and Technology, together with the National Development and Reform Commission and the Ministry of Education, organized a 6G technology research and development launch meeting in Beijing. The establishment of the 6G technology research and development promotion working group and the general expert group marks the official launch of my country's 6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00
CPCH04L1/0618H04L1/0625H04L1/0631H04L1/0637H04L1/0675H04L1/0071H04L1/0003H04L1/0009H04L1/0064H04L1/0013H04L1/0656
Inventor 尤肖虎黄永明盛彬季晨
Owner SOUTHEAST UNIV
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