Invention Grant
US07720142B2 Method and apparatus for decision-feedback equalization using single-sided eye with global minimum convergence
有权
使用具有全局最小收敛的单面眼的判决反馈均衡的方法和装置
- Patent Title: Method and apparatus for decision-feedback equalization using single-sided eye with global minimum convergence
- Patent Title (中): 使用具有全局最小收敛的单面眼的判决反馈均衡的方法和装置
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Application No.: US11686148Application Date: 2007-03-14
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Publication No.: US07720142B2Publication Date: 2010-05-18
- Inventor: Mohammed S. Mobin , Gregory W Sheets , Lane A. Smith , Paul H. Tracy
- Applicant: Mohammed S. Mobin , Gregory W Sheets , Lane A. Smith , Paul H. Tracy
- Applicant Address: US PA Allentown
- Assignee: Agere Systems Inc.
- Current Assignee: Agere Systems Inc.
- Current Assignee Address: US PA Allentown
- Agency: Ryan, Mason & Lewis, LLP
- Main IPC: H03H7/30
- IPC: H03H7/30 ; H03H7/40 ; H03K5/159

Abstract:
Methods and apparatus are provided for decision-feedback equalization with global minimum convergence. A threshold position of one or more DFE latches employed by a decision-feedback equalizer is determined by obtaining a plurality of samples of a single-sided data eye using at least one decision latch and at least one roaming latch; comparing the samples obtained by the at least one decision latch and at least one roaming latch to identify an upper and lower voltage boundary of the single-sided data eye; and determining a threshold position of the one or more DFE latches based on the upper and lower voltage boundaries. The comparison can optionally comprise obtaining an exclusive or (XOR) of the samples obtained by the at least one decision latch and at least one roaming latch. The XOR comparison positions an opening for the single-sided data eye at a zero hit count.
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