基于GPU的北斗B1宽带复合信号实时发生器设计

doi:10.12305/j.issn.1001-506X.2024.03.04

Abstract

Abstract:

In order to achieve joint generation of Beidou B1C+B1I signals, a real-time generation method for the Beidou B1 wideband composite signal based on software-defined radio and graphics processing unit (GPU) acceleration is proposed. The method is designed for the single-sideband complex binary offset carrier (SCBOC) modulation scheme, and generates intermediate frequency signals according to the user-defined receiver motion trajectory and ephemeris files, which are transmitted through the radio frequency terminal. To further improve the GPU parallel computing speed, a compute unified device architecture stream (CUDA) optimization implementation scheme is designed based on asynchronous computing to accelerate the sampling point data calculation, optimizing the device memory structure, designing a parallel thread architecture, and using CUDA stream acceleration. Test results demonstrate that the optimized algorithm can generate real-time Beidou B1I+B1C signals based on SCBOC modulation. Based on the GPU platform of GTX3060, it can generate signals for eight satellites in real-time with a sampling rate of 90 M.

Key words: B1 wideband composite signal, software radio, single-sideband complex binary offset carrier (SCBOC), compute unified device architecture stream (CUDA) stream, real-time generation

CLC Number:

P228.1

Zihan WANG, Xiaohui BA, Wei JIANG, Bogen CAI, Jian WANG, Tao WEN. Real-time design of wideband composite signal generator for Beidou B1 based on GPU[J]. Systems Engineering and Electronics, 2024, 46(3): 795-804.

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参数	CPU: I9 10850H	GPU: GTX 3060
核心数量	10	3 584
时钟频率/GHz	3.6	1.78
内存/GB	32	12
操作系统	Windows 11
CUDA版本	11.0

Real-time design of wideband composite signal generator for Beidou B1 based on GPU

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