verilog实现的基带信号编码，整个系统分为六个模块，分别为：时钟模块,待发射模块,卷积模块,扩频模块,极性变换和内插模块,成型滤波器-verilog implementation baseband signal coding, the entire system is divided into six modules, namely: the clock module, to be launched modules, convolu