Ingress noise has great proportion in sorts of noise on upstream channel in HFC.
在HF C网络回传通路各类噪声中，输入噪声占有相当大的比重。
Alot of noises accumulate on the upstream channel in HFC (Hybrid Fiber-Coax) system, which caused the difficulty in bi directional operations, Therefore, suppressing them is very difficult.
HFC上行通路汇集了大量的各类噪声，严重影响着其双向业务的开通，如何对这些噪声进行抑制是个难题。
Alot of noises accumulate on the upstream channel in HFC (Hybrid Fiber-Coax) system, which caused the difficulty in bi directional operations, Therefore, suppressing them is very difficult.
HFC上行通路汇集了大量的各类噪声，严重影响着其双向业务的开通，如何对这些噪声进行抑制是个难题。
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