HFC网络回传通道设计分析及其关键技术

Return Path Design of HFC Network and Critical Technology

提出HFC网络回传通道设计的可靠性、开放性、扩展性和实用性原则 ,阐明这四大设计原则的准确含义 ,指明正、反向通道设计的异同。分析回传通道设计的 3项关键技术 :控制汇聚噪声 ,实施电平均衡 ,防止回传通道过激励而发生信道阻塞。

We introduced the accurate definitions and requirements of the four major principles for the design of the return path of HFC network: reliability, openness, expandability and practicability. Pointed out the similarity and difference for the design of forward and return path. We gived the detailed analyses of the three key technologies of return path design: upstream influx noise control, implementation of level equalization and the preventing of the congestion of channels due to the over-excitation of return path.