A.直接序列擴頻(Direct Sequence Spread Specm,DSSS) B.跳頻擴頻(Frequency Hopping Spread spectunu FHSS) C.跳時(Time Hopping,TH) D.線性調頻(Chirp )
A.標準調幅(AM)B.抑制載波的雙邊帶(DSB)調制C.單邊帶(SSB)調制D.殘留邊帶(VSB)調制
A.頻分多址(FDMA) B.時分多址(TDMA) C.碼分多址(CDMA) D.空分方式(SDMA)