上行信道改变请求消息 UCC-REQ
上行信道改变响应消息 UCC-RSP
接收上行信道描述 Uplink Channel Description ; UCD
上行信道描述消息 Uplink Channel Descriptor ; UCD
上行信道功率回馈 upstream power back-off
上行信道协方差矩阵 UCCM
快速上行信令信道 FAUSCH Fast Uplink Signaling Channel ; FAUSCH
物理上行控制信道 PUCCH ; Physical Uplink Control Channel
上行导频信道 UpPCH Uplink Pilot Channel
The SNR of the upstream channel directly determines the quality of the Internet service.
但是,上行信道的信噪比直接影响整个网络的通信质量,严重时会直接导致通信中断。
参考来源 - 基于FPGA+DSP的HFC网络监测系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
在没有基站的情况下，手机将自主选择一个空闲的上行信道发射明码信号。
In the absence of the base station, the phone will be free to choose one of the upstream channel signal launch codes.
至于接收系统，只要将接收频率搜索范围扩大到上行信道频率范围就可以了。
As for the receiving system, as long as the receiving frequency search will extend to the upstream channel frequency range of it.
另外，他还参与数字电缆和卫星电视接收机的射频部分研发并领导电缆电视上行信道工程。
In addition, he was also engaged in the RF front-end development of cable and satellite for digital TV and led the project return channel for cable.
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