正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)技术以其频谱利用率高和抗频率选择性衰落强等优点，成为下一代移动通信中最具竞争力的关键技术之一-OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology for its high spectrum efficiency and strong anti-frequency selective fading, etc.

检测串口，同有选择性地测试，一次最多可测试2个-Testing serial port, with the selective test, a test up to 4

Jakes Model + Rayleigh Channel + Time Selective Fading + Freq()