Semi-parallel SC decoder implementation method and system based on FPGA

Abstract

The invention discloses a semi-parallel SC decoder implementation method and system based on an FPGA, and the method comprises the steps: setting the parameters of a decoder, initializing a part, an updating module and a reverse sequence rearrangement module, and obtaining an initialized decoder; based on the initialized decoder, the processing unit group performs decoding operation on the processing units, and performs bit judgment according to an operation result to obtain a judgment result; and updating and reordering the part of the decoder and the updating module in sequence according to the judgment result, and outputting a decoding result. The system comprises an initialization module, a judgment module and an updating module. According to the invention, the structure of the semi-parallel SC decoder can be simplified, and a better decoding result can be realized at the same time. The semi-parallel SC decoder implementation method and system based on the FPGA can be widely applied to the technical field of channel coding.

Description

technical field [0001] The invention relates to the technical field of channel coding, in particular to an FPGA-based semi-parallel SC decoder implementation method and system. Background technique [0002] Polar code is a channel coding technology proposed by E.Arikan in 2007; this coding technology is currently the only channel coding technology that has been proven to achieve channel capacity. Polar code has the following advantages: fine code rate adjustment The serial offset decoding algorithm with better performance in mechanism and decoding end is very suitable for hardware programming because of its recursive characteristics, and achieves parallel decoding effect. Later, someone proposed a semi-parallel SC decoder structure. In the longer case, further reduce the number of instantiated processing units to increase the sacrifice of a small amount of decoding delay in exchange for less hardware resource occupation, but their semi-parallel SC decoder structure is diffic...

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Problems solved by technology

[0002] Polar code is a channel coding technology proposed by E.Arikan in 2007; this coding technology is currently the only channel coding technology that has been proven to achieve channel capacity. Polar code has the following advantages: fine code rate adjustment The serial offset decoding algorithm with better performance in mechanism and decoding end is very suitable for hardware programming because of its recursive characteristics, and achieves parallel decoding effect. Later, someone proposed a semi-parallel SC decoder structure. In the longer case, further reduce the number of instantiated processing units to increase the sacrifice of a small amount of decoding delay in exchange for less hardware resource occupation, but their semi-parallel SC decoder structure is difficult to achieve decoding during the decoding process. part of the decoder and the generation of modules, thus increasing the complexity of the structure of the semi-parallel SC decoder

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