Invention Publication
EP2220772A1 SYSTEMS AND METHODS FOR MITIGATING THE EFFECTS OF UPSTREAM FAR-END CROSS TALK
审中-公开
系统和方法减小信号UP远端谈论的影响
- Patent Title: SYSTEMS AND METHODS FOR MITIGATING THE EFFECTS OF UPSTREAM FAR-END CROSS TALK
- Patent Title (中): 系统和方法减小信号UP远端谈论的影响
-
Application No.: EP08849224.4Application Date: 2008-10-20
-
Publication No.: EP2220772A1Publication Date: 2010-08-25
- Inventor: DUVAUT, Patrick , MAHADEVAN, Amitkumar , BIYANI, Pravesh , SINGH, Shailendra , MAHESHWARI, Satyavardhan
- Applicant: Ikanos Technology Ltd.
- Applicant Address: Cricket Square, Hutchins Drive P.O. Box 2681 Grand Cayman KY1-1111 KY
- Assignee: Ikanos Technology Ltd.
- Current Assignee: Ikanos Technology Ltd.
- Current Assignee Address: Cricket Square, Hutchins Drive P.O. Box 2681 Grand Cayman KY1-1111 KY
- Agency: Exell, Jonathan Mark
- Priority: US987299P 20071112; US123925 20080520
- International Announcement: WO2009064586 20090522
- Main IPC: H04B1/00
- IPC: H04B1/00
Abstract:
Systems and methods for mitigating the effects of self-FEXT within an xDSL system are described. At least one embodiment is a method for reducing self-induced far end crosstalk (self-FEXT) in a multiple input multiple output (MIMO) digital subscriber line (xDSL) system. The method comprises deriving an initial value for an off-diagonal multiple input multiple output canceller (ODMC) while the ODMC is inactive and while in data mode. The method further comprises activating the initial ODMC and converging towards an steady-state value for the ODMC by performing an adaptive algorithm to maximize the Shannon's capacity of the system and to reduce upstream self- FEXT. The method also comprises performing bit loading and updating a frequency domain equalizer (FEQ).
Information query