中文说明：以QPSK为调制技术的OFDM信号产生与解码。这种类型的OFDM对于WiMAX和其他无线和多媒体标准特别有用。QAM4和QPSK是相同的调制技术。只需运行模型，观察OFDM的性能；
English Description：
OFDM Signal generation and decoding using QPSK as the modulation technique. This type of OFDM is particularly useful for WiMAX and other Wireless and Multimedia Standards. QAM4 and QPSK are the same modulation technique. Just run the Model observe the performance of the OFDM.