数字信号处理半带滤波器，实现信号2倍上采样和低通滤波，16bit位宽数据-Digital signal processing the half-band filter, to achieve a signal 2 times up-sampling and low pass filtering, 16bit bit data wide

基于FPGA开发的11阶半带升余弦FIR滤波器，用在阅读器基带滤波时的抽取滤波器使用，采用verilog语言实现。-Raised cosine FIR filter based FPGA development 11 order of half-band decimation filter used in reader baseband filtering, using verilog language implementation.

利用matlab提供的firhalfban函数设计阶数为16、通阻带容限为0.0001的半带滤波器。仿真测试滤波前后的信号时域图，回执滤波器的频率响应特性图-Provided firhalfban function using matlab design order of 16, through the 0.0001 stopband wool half-band filter. Simulation test filtered time domain signal before and aft