摘要
采用延时共轭相乘前向定时算法和基于FARROW结构的内插滤波器实现对QPSK信号的符号同步,针对拉格朗日内插滤波过程串行实现用时较长的问题,提出将内插滤波过程并行实现的优化方法,并在matlab中通过matlabpool命令启动多个处理单元,利用关键字parfor将整个插值滤波循环分解为多个子循环,每个子循环同时对不同列并行插值滤波,仿真结果证明这一方法大大调高了同步速度,对基于高性能计算的软件解调系统的设计具有指导意义。
The delay-conjugat-multiply nonlinearity forward timing algorithm and of the interpolation filter based on FARROW structure are used to realize the symbol synchronization for QPSK signal. This paper puts forward the optimization method to parallel the interpolation filter implementation in order to reduce the serial computational amount of Lagrange interpolation filtering, start at the same time multiple units by using the matlabpool command of matlab, divide the entire loop into multiple subloops by using the key words parfor, each sub-loop performs parallel interpolation filtering for different columns. The simulation results show that this method has greatly improved the synchronous speed, and has a guiding significance for software demodulation system based on high- performance computing.
出处
《无线电通信技术》
2013年第3期36-38,42,共4页
Radio Communications Technology
