Ka频段卫星通信上行链路自适应功率控制Ka band satellite communication uplink adaptive power control-Ka band satellite communication uplink adaptive power control

（1）用VHDL实现四层电梯运行控制器。（2）电梯运行锁用一按钮代替（开锁上电），低电平可以运行，高电平不能运行。（3）每层电梯入口处设有上行、下行请求按钮，电梯内设有乘客到达层次的停站要求开关，高电电平有效。（4）有电梯所处楼层指示灯和电梯上行、下行状态指示灯。（5）电梯到达某一层时，该层指示灯亮，并一直保持到电梯到达另一层为止。电梯上行或下行时，相应状态指示灯亮。（6）电梯接收到停站请求后，每层 -(1) four-story elevator run controller using

[18] Relay Selection and Resource Allocation for D2D-Relaying under Uplink Cellular Power Control

Channel estimation for millimeter-wave (mmWave) massive MIMO with hybrid precoding is challenging, since the number of radio frequency (RF) chains is usually much smaller than that of antennas. To date, several channel estimation schemes have bee