发明名称 Method for asymmetrically attenuating signals in a transmission system
摘要 Ingress noise in a hybrid fiber-coax transmission system (10) may be reduced by employing asymmetric taps (301'-308',) between a pair of line extenders (28-28) for attenuating downstream and upstream information by different weights. The downstream weights of the taps are selected to achieve a substantial constant power level at each tap for individual subscribers (14-14). The upstream attenuation of each tap is selected to allow for a nearly constant level of subscriber-generated information to be received at the line extender while the subscriber generated upstream information is supplied to the taps at a constant value that is maximized to reduce the effect of ingress noise.
申请公布号 US5845191(A) 申请公布日期 1998.12.01
申请号 US19960686302 申请日期 1996.07.25
申请人 AT&T CORP 发明人 MORGAN, ISAAC E.
分类号 H04H20/38;H04H20/77;H04N7/173;(IPC1-7):H04N7/173 主分类号 H04H20/38
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