中文说明：这是OQAM调制的VHDL代码。采用用于新兴技术如FBMC。此代码逻辑从MATLAB函数oqam_preprocessing公司提供。
English Description：
This is VHDL code for OQAM modulation. OQAM used in new emerging technology like FBMC. This code logic taken from MATLAB function available in Mathwork OQAM_Preprocessing.