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(diào)頻(Chirp )
A.標準調(diào)幅(AM)B.抑制載波的雙邊帶(DSB)調(diào)制C.單邊帶(SSB)調(diào)制D.殘留邊帶(VSB)調(diào)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)