发明申请
- 专利标题: Phantom use in DSL systems
- 专利标题(中): 幻影在DSL系统中的应用
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申请号: US11267623申请日: 2005-11-04
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公开(公告)号: US20060268966A1公开(公告)日: 2006-11-30
- 发明人: John Cioffi , Bin Lee , Wonjong Rhee , Georgios Ginis
- 申请人: John Cioffi , Bin Lee , Wonjong Rhee , Georgios Ginis
- 申请人地址: US CA Redwood City
- 专利权人: Adaptive Spectrum and Signal Alignment, Inc.
- 当前专利权人: Adaptive Spectrum and Signal Alignment, Inc.
- 当前专利权人地址: US CA Redwood City
- 主分类号: H04L5/16
- IPC分类号: H04L5/16
摘要:
Superimposing phantom-mode signals reinforces existing differentially driven DSL downstream signals in a vectored binder of DSLs or reinforces upstream vectored signals in a binder of differentially excited twisted pairs, thus expanding the extra transmission modes of the previous GDSL multi-wire two-sided-excitation invention to the case where coordination can only occur on one-side of the binder. Each pair is treated as a common-mode antenna with respect to earth ground, with some pairs selectively excited at the transformer center tap at the transmit end with respect to a common (earth or chassis) ground reference. Corresponding receivers on other non-excited pairs sense the signals between their center taps and a ground at the opposite ends of the lines to the exciting transmitters. A dual use with hybrid circuits allows the receiving circuit to also have an upstream transmitter and an upstream-sensing receiver on the center tap of the opposite side of an adjacent wire.
公开/授权文献
- US07773497B2 Phantom use in DSL systems 公开/授权日:2010-08-10
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