Invention Grant
- Patent Title: PAM-4 transmitter precoder for 1+0.5D PR channels
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Application No.: US16272497Application Date: 2019-02-11
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Publication No.: US10720994B2Publication Date: 2020-07-21
- Inventor: Alessandro Cevrero , Pier Andrea Francese , Marcel A. Kossel , Christian I. Menolfi , Ilter Özkaya , Thomas H. Toifl
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Nathan M. Rau
- Main IPC: H04B10/04
- IPC: H04B10/04 ; H04B10/50 ; H04B10/524 ; H03F1/06 ; H04L25/49 ; H04L25/497

Abstract:
A system and method for a high-speed transmitter comprising a precoder configured to receive a sequence of input symbols and to generate for each received symbol a respective recoded symbol is disclosed. The transmitter includes a recoding unit configured for recoding each current received PAM-M based on the recoded symbol immediately preceding the current recoded symbol at the recoding unit, a shift unit configured for determining a shift value for each current received symbol from the recoding unit based on the symbol received from the recoding unit and immediately preceding the current symbol at the shift unit; and Feed-Forward Equalizer unit for applying the shift values to the respective symbols received from the recoding unit to generate a corresponding sequence of output symbols to be transmitted in an output stream.
Public/Granted literature
- US20190173586A1 PAM-4 TRANSMITTER PRECODER FOR 1+0.5D PR CHANNELS Public/Granted day:2019-06-06
Information query