Low-delay polarization code decoder based on continuous deletion decoding algorithm

Abstract

The invention discloses a low-delay polarization code decoder based on a continuous deletion decoding algorithm, used for further reducing a decoding delay of the polarization code decoder based on the continuous deletion decoding algorithm. The low-delay polarization code decoder comprises a fusion treatment gating module, a fusion treatment delay module, a 8b node module, a generation circuit 3module, a delay XOR gating module, a delay XOR transmission module, a memory ROM1 and a memory ROM2, and is characterized by also comprising the 8b node module, the delay XOR gating module and the delay XOR transmission module. According to the low-delay polarization code decoder provided by the invention, decoding of a polarization code can be achieved, 8-byte information can be simultaneously decoded, the delay of a decoding process of the decoder is greatly reduced, and thus the decoding delay of the polarization code of which the code length is N is reduced to 0.5N-1 clock cycle.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and further relates to a low-time-delay polar code decoder based on a continuous erasure decoding algorithm in the technical field of channel coding. The invention is used for polar code decoding. Background technique [0002] Polar code is a new type of channel coding scheme proposed by Erdal Arikan for the first time in 2009. It is a coding scheme that can prove to be able to achieve the channel capacity of Shannon, so it has aroused the interest of many scholars. At the same time, polar codes have become one of the most important codes in the field of coding by virtue of their low-complexity encoding and decoding schemes. [0003] When Erdal Arikan proposed the polar code, he elaborated on the construction method, coding structure and decoding algorithm of the polar code. The uniqueness of the polar code coding method lies in its coding method based on the channel polarization...

AI Technical Summary

Problems solved by technology

but with k 0 increases, the hardware resource consumption of the decoder increases sharply

The disadvantage of this structure is that the decoding delay of the decoder is reduced at the cost of a sharp increase in hardware resource consumption

The shortcomings of this structure are: the delay of the internal feedback signal of the decoder is high and the decoder can only decode 2-bit information at the same time, the entire decoding process requires too many clock cycles, and the decoding delay is high

[0006] Due to the inherent continuous decoding characteristics of the continuous erasure decoding algorithm, the decoder has the disadvantages of high decoding delay and low throughput.

Although many scholars have done a lot of work on reducing the decoding delay of the polar code decoder based on the continuous erasure decoding algorithm, in the existing decoder implementation, the decoding delay is still high and cannot Meet the increasingly urgent high-speed communication needs

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