发明申请
- 专利标题: SYSTEM AND METHOD FOR HIGH-SPEED DECODING AND ISI COMPENSATION IN A MULTI-PAIR TRANSCEIVER SYSTEM
- 专利标题(中): 多对数收发系统中高速解码和ISI补偿的系统和方法
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申请号: US12768817申请日: 2010-04-28
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公开(公告)号: US20100208788A1公开(公告)日: 2010-08-19
- 发明人: Oscar E. Azazzi , David Kruse , Arthur Abnous , Mehdi Hatamian
- 申请人: Oscar E. Azazzi , David Kruse , Arthur Abnous , Mehdi Hatamian
- 主分类号: H03H7/40
- IPC分类号: H03H7/40
摘要:
A method and a system for providing ISI compensation to an input signal in a bifurcated manner. ISI compensation is provided in two stages, a first stage compensates ISI components induced by characteristics of a transmitter's partial response pulse shaping filter, a second stage compensates ISI components induced by characteristics of a multi-pair transmission channel. First stage ISI compensation is performed in an inverse response filter having a characteristic feedback gain factor K, during system start-up. Second stage ISI compensation is performed by a single DFE in combination with a MDFE operating on tentative decisions output from a Viterbi decoder. As the DFE of the second stage reaches convergence, the feedback gain factor K of the first stage is ramped to zero.
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