Parallel RS decoding method achieved through graphics processing unit (GPU)
A graphics processor and decoding technology, applied in the field of parallel RS decoding, can solve the problems of difficult equipment upgrades and high costs, and achieve the effects of high design and maintenance costs, simple software design, and complicated code modification and debugging processes
Active Publication Date: 2013-02-20
SPACE STAR TECH CO LTD
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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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[0027] Attached below figure 1 The present invention will be further described.
[0028] GPU is a parallel processing device that can be connected to a general-purpose computer. It has a large number of parallel computing cores, and usually has independent physical memory and high-speed memory read mechanism. Dozens or even hundreds of times improvement.
[0029] In a GPU, software is executed sequentially in units of program cores, each of which processes data in parallel. The parallel scale of each program core can be set independently. The parallel structure within the program core is divided into two levels: blocks and threads. Each program core software can be divided into multiple blocks to be executed in parallel, each block executes program instructions independently, and data interaction cannot be performed between blocks. Each block can be divided into multiple threads, each thread independently executes the program instructions received by the block where it is ...
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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 graphics 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 downloaded 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 the link. In order to resist the influence of the error code of the satellite-ground communication link on the data, the satellite ground receiving system must adopt the error correction code technology. [0003] Error-correcting code technology is a key method for satellite ground receiving systems to resist channel errors. It is the p...
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IPC IPC(8): H03M13/15
Inventor 魏耀都张拯宁朱翔宇战勇杰
Owner SPACE STAR TECH CO LTD