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Noise suppression utilizing selective enabling of upstream coaxial paths in a hybrid fiber coaxial network
Noise suppression utilizing selective enabling of upstream coaxial paths in a hybrid fiber coaxial network
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机译:利用混合光纤同轴网络中上游同轴路径的选择性使能进行噪声抑制
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摘要
A coupling device for use in a hybrid fiber coaxial (HFC) network may be configured to detect a control message and determine from the message a period for which a cable modem downstream is to be transmitting a desired transmission, disable an upstream path through it when there is only noise incident on the upstream path, and enable the upstream path during the period when a desired transmission from a cable modem downstream of the coupling device is incident on the upstream path. The coupling device may be a trunk amplifier, a distribution amplifier, or a splitter. The coupling device may comprise a single upstream interface coupled to a plurality of downstream interfaces. The enabling and/or disabling may be in response to a signal strength indicated by the SSI being below a threshold.
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