请说明有线电视、市内电话、调频广播、移动电话、校园网等通信系统各使用哪些信道?...
Thursday, May 23, 2024
一个有10个终端的通信网络,如果采用网型网需要用到多少条通信链路?如果采用星型网需要有多少条通信链路?...
Tuesday, April 30, 2024
下列通信介质中,传输频率最高的介质是()A、双绞线B、同轴电缆C、地面微波D、光纤...
Thursday, May 23, 2024
为什么在5B6B码表中有的码组正负模式相同而有的不相同?...
Tuesday, April 30, 2024
Thursday, May 23, 2024
Tuesday, April 30, 2024
Thursday, May 23, 2024
要成为地球的静止卫星,通信卫星的运行轨道须满足哪些条件?...
Tuesday, April 30, 2024
数字基带信号经过()之后变成了()信号,可以在带通信道中传输。...
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, March 7, 2024
Thursday, May 23, 2024
当数字信号传输过程中出现误码时,通信系统采用哪些手段来减少误码的影响?...
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, May 23, 2024
Thursday, May 23, 2024