基于GPU加速的扩频信号捕获方法

摘要

针对扩频信号捕获中计算量大和运算速度慢的问题,提出基于图形处理器( GPU)加速的捕获方法,将基于循环相关的捕获算法转化为计算统一设备架构(CUDA)线程块执行过程,使扩频捕获过程完全在GPU中加速执行,在保持原有扩频信号捕获概率的同时,显著提高了算法的运算速度.实验结果表明,基于GPU的捕获方法有效地提高了系统的执行效率.%The acquisition of spread spectrum signal is an important part of the DSSS( direct sequence spread spectrum) receiving system. For solving the existing problems such as heavy calculation and low speed, the acquisition method based on the GPU acceleration is proposed. The acquisition method based on the cyclic correlation is converted into the process of CUDA thread blocks, and then the process of acquisition is executed completely through GPU. The simulation results show that the method based on GPU improves the executive efficiency of DSSS systems.