Heterogeneous parallel framing method of vdif format data based on gpu

Abstract

The invention discloses a heterogeneous parallel frame coding method for VDIF format data based on GPU, and relates to the technical field of communication. The present invention makes full use of the high flexibility and high-efficiency parallel data processing capability of a graphics processing unit (Graphic Process Unit, GPU), proposes a GPU-based data format framing method conforming to the VDIF specification, and designs the frame header calculation process, multiple Channel single-threaded framing mode and multi-channel multi-threaded framing mode. That is, the host receives input data in a multi-channel manner through the graphics processor GPU, obtains input parameters, calculates frame header parameters, calculates the number of frames per second and the number of data bits per second of the input data, and judges the number of frames per second of the input data Whether it is an integer, and whether the number of data bits per second is an integer multiple of the number of quantized bits; if both are yes, then select single-channel single-thread mode or multi-channel single-thread mode according to requirements; execute single-channel single-data Threaded process and multi-channel single data threaded process.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a GPU-based heterogeneous parallel frame encoding method for VDIF format data. Background technique [0002] Very Long Baseline Interferometry (VLBI) technology has been widely used in deep space measurement and control systems because of its unique ultra-high spatial resolution and positioning accuracy, and the VLBI Data Interchange Interface Specification (VLBI Data Interchange Format, VDIF) is the most widely supported data format in the VLBI field, and is the basis for international VLBI joint observation data exchange. [0003] At present, the VLBI baseband conversion and recording system of the deep space measurement and control network is a VLBI digital backend (Digital Backend Equipment, DBE) system developed based on the FPGA platform. The system supports both the VSI standard specification and the RDEF specification from the beginning of the design. However, wit...

AI Technical Summary

Problems solved by technology

[0005] (1) It is difficult to reconstruct the system architecture based on FPGA, and it is difficult to upgrade;

[0006] (2) Failure to support the VDIF data exchange format;

[0007] (3) Lack of efficient heterogeneous parallel frame encoding method based on GPU

[0008] At present, there is no scheme to improve the framing of VDIF format data by using Graphic Process Unit (GPU).

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