FFT蝶形运算单元程序，可用于OFDM,以及任何相关数字信号处理的设计中-FFT butterfly processor program can be used in OFDM, as well as any relevant design of digital signal processing

FFT 蝶形处理器的VHDL代码，由一个加法器，一个减法器和一个实例化为组件的旋转因子乘法器ccmul组成-FFT butterfly processor VHDL code by an adder, a subtracter, and an instance of the component into the composition of the rotation factor multiplier ccmul