Tuesday, February 27, 2024
Tuesday, February 6, 2024
问题:什么叫码重?什么叫码距?最小码距的物理意义是什么?...
Thursday, March 7, 2024
问题: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?...
Thursday, March 7, 2024
Thursday, March 7, 2024
Thursday, March 7, 2024
问题:同轴电缆用()信号来传递信息A、红外B、光C、声D、电...
Thursday, March 7, 2024
问题:一般来说,传输媒介的传输带宽()A、随传输距离的增加而增加B、随传输距离的增加而减小C、与传输距离无关...
Thursday, March 7, 2024
Sunday, March 3, 2024
问题:为什么要进行数字调制?常用的数字调制方式有哪几种?...
Thursday, March 7, 2024
Sunday, March 3, 2024
Sunday, March 3, 2024
Thursday, March 7, 2024
Thursday, March 7, 2024
问题:简述传码率,传信率,误码率,误信率的定义,单位分别是什么?...
Thursday, March 7, 2024
Thursday, March 7, 2024
Thursday, March 7, 2024
Thursday, March 7, 2024
问题:ASK、FSK、PSK和DPSK四种信号,()是非等幅信号,()信号的频带最宽。...
Thursday, March 7, 2024
问题: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, March 7, 2024