Polarization code cascade space-time code system and cascade polarization code coding method thereof

Abstract

The present invention provides a polarization code cascade space-time code system and a cascade polarization code coding method thereof. The polarization code cascade space-time code system comprises the following steps that S1 a channel distribution information estimated value of a sending terminal is sent to a polarization code coder, the space-time code coding is carried out on a generated polarization code after modulation, and then the polarization code is sent to an MIMO channel; S2 a signal passes the MIMO channel and then is received by a reception antenna of a reception terminal, and then a space-time code signal reformer reforms the received signal according to a channel side information estimator of the reception terminal; S3 the demodulation and decoding operations are carried out according to the reformed signal and the channel side information of the reception terminal to obtain the original source bit. The present invention provides the reasonable polarization code cascade space-time code system, and according to the analysis in a Rayleigh fading MIMO antenna, each polarization code word equalizes the polarization code cascade space-time code system as a single transmission channel, and the channel gain and addition noise distribution of the equivalent channels is given out.

Description

technical field [0001] The present invention relates to a method for constructing a concatenated polar code, in particular to a polar code concatenated space-time code system, and to a concatenated pole for MIMO space-time code system in the polar code concatenated space-time code system Code encoding method. Background technique [0002] MIMO technology has been practical in 4G, and in 5G mobile communication systems, MIMO technology is a large-scale multiple-input multiple-output technology, that is, Multiple-input Multiple-output technology, referred to as MIMO technology; large-scale multiple-input multiple-output technology will also be used as an antenna The core technology of the structure, the number of antennas will be greatly increased. Space-time code (space-time blockcoding, STBC) is a simple transmit diversity technology in MIMO systems, it can provide full diversity gain under maximum likelihood decoding, the most basic space-time code model was proposed by Al...

AI Technical Summary

Problems solved by technology

In summary, it is of great practical significance to combine polar codes and space-time codes, two potential technologies in future wireless communications; however, the coding structure of polar codes is different from LDPC codes and Turbo codes. In the process of coding construction, the selection of information bits is an important factor affecting the performance of polar codes. The selection of information bits is related to the parameter estimation of the channel model. Therefore, when combining polar codes and space-time codes, it is necessary Consider the equivalent channel model parameters of space-time codes. Therefore, even if a polar code and space-time code concatenation model is proposed, if the analysis of channel parameters and the corresponding polar code encoding method are ignored, its inaccurate Coding construction causes degradation of bit error performance

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