一种基于单载波均衡技术的数字信号处理方式的FPGA实现

FPGA Realization of a Kind of Digital Signal Processing Based on Single Carrier Frequency Domain Equalization Technology

电磁波在传播的过程中,除了会产生衰减,还会由于反射、绕射和散射形成的分量而产生多径衰落。为了使传输信号能够更好地抵抗各种信道损失的影响,需要在信号传输过程中采用单载波均衡的方式进行处理。对单载波均衡算法中典型的数字信号处理方式,如基于自相关的前导码检测以及RS编解码,进行了研究,并针对系统对FPGA低成本、高运行速率、高传输速率方面的要求,给出了基于FPGA的上述算法的实现。

When the electromagnetic wave spreading,there is multipath fading caused by reflection,diffraction and scattering of the wave besides the decay.To make the transmission signals resist the impact on channel loss better,a single carrier frequency domain equalization（SCFDE） procedure may be used in the signal transmission process.The classical digital signal processing of SCFDE algorithm such as a lead code detection based on autocorrelation and a RS encoding and decoding are researched.The FPGA realization of the algorithm is proposed.