A Parallel RS Decoding Method Using Graphics Processor GPU

Abstract

Disclosed is a parallel RS decoding method achieved through a GPU. The method includes taking a general-purpose computer connected with one or more GPUs as a hardware platform, dividing RS decoding into a data read-write and initialization portion and a parallel decoding portion, and performing decoding on a plurality of RS code words simultaneously to achieve parallel decoding by using the feature that each GPU is provided with massive computing cores inside. Parallel decoding is broken up into four steps, and a parallel processing method is designed for each step so as to enable the whole decoding process to achieve parallelization and improve the RS decoding rate. When the upper limit of the decoding rate is insufficient, economical upgrade can be achieved through increasing the quantity of the computing cores. According to requirements of a satellite ground receiving system, the general-purpose computer connected with one or more GPUs is adopted as the hardware platform, high-speed parallel RS decoding is achieved through two-layer parallel structure of the computing cores inside the GPU, upgrade of the upper limit of the decoding rate is achieved economically on the premise of high-speed parallel RS decoding, the cost is low, and the method is easy to achieve.

Description

technical field [0001] The invention relates to a parallel RS decoding method realized by a graphic processor GPU, which is suitable for real-time processing of massive information in high-speed data communication of a satellite ground receiving system. Background technique [0002] The satellite ground receiving system needs to receive a large amount of data information transmitted through the satellite-ground communication link for collection, transmission, comprehensive analysis, calculation and other processing. The satellite-ground communication link is an unstable link, and there are a lot of bit errors when transmitting information on this link. In order to resist the impact of bit errors in the satellite-ground communication link on data, the satellite ground receiving system must use error-correcting code technology. [0003] Error-correcting code technology is a key means for the satellite ground receiving system to resist channel errors, and it is the premise tha...

AI Technical Summary

Problems solved by technology

The use of dedicated processing boards can meet the existing data processing speed, but when the processing speed requirement exceeds the upper limit of the performance of the current board or the RS coding parameters used are changed, the design of the board hardware and its special software can only be redesigned, resulting in equipment upgrades Difficult and costly

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