A.發(fā)射器 B.接收器 C.無線信道 D.有線信道
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 )