中频采样QPSK解调的FPGA设计与实现

FPGA Design and Implementation of IF Sampling QPSK Demodulation

中频采样QPSK解调是一个比较成熟和稳定的技术,它克服了基带采样所带来的一些模拟因素。从中频采样出发,介绍了中频采样理论以及QPSK解调的组成和实现框图,同时也对2种采样方式进行了性能比较。中频采样也有利于设备的小型化和产品化。

The QPSK demodulation on intermediate frequency sampling is a mature and trusty technique. It overcomes analog factor from basedband sampling. From the view of intermediate frequency sampling. This paper introduces theory of intermediate frequency sampling, and composition and implementation block diagram of QPSK demodulation. It makes capability comparison between the two sampling methods, and it proves IF sampling provides advantages to equipment miniatuizatian and product implementation.