Invention Grant
US08837573B2 Apparatus and method thereof for compensating for gain changes of N-PAM modulate signals
有权
用于补偿N-PAM调制信号的增益变化的装置及其方法
- Patent Title: Apparatus and method thereof for compensating for gain changes of N-PAM modulate signals
- Patent Title (中): 用于补偿N-PAM调制信号的增益变化的装置及其方法
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Application No.: US13298567Application Date: 2011-11-17
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Publication No.: US08837573B2Publication Date: 2014-09-16
- Inventor: Eran Doron , Baruch Meborach Bublil , Yaron Slezak , Idan Versano
- Applicant: Eran Doron , Baruch Meborach Bublil , Yaron Slezak , Idan Versano
- Applicant Address: US CT Shelton
- Assignee: Transwitch Corporation
- Current Assignee: Transwitch Corporation
- Current Assignee Address: US CT Shelton
- Agency: Pearl Cohen Zedek Latzer Baratz LLP
- Main IPC: H03H7/30
- IPC: H03H7/30 ; H03G3/00 ; H04L25/49 ; H04L25/03 ; H04L25/06
Abstract:
A method for compensating for gain changes of an N-level pulse amplitude modulation (PAM-N) modulated signal. The method comprises comparing the PAM-N modulated signal to N−1 configurable thresholds, wherein the input PAM-N modulated signal is also equalized and the N−1 configurable thresholds are N−1 different voltage levels; tracking gain changes in the input PAM-N modulated signal by comparing the input PAM-N modulated signal to a compensation threshold; and adjusting a level of the at least one of the N−1 configurable thresholds of the N−1 comparators based on an output of the compensation comparator, thereby offsetting a crossing point of the at least one comparator respective of the at least one of the N−1 configurable thresholds to compensate for gain changes in the input PAM-N modulated signal.
Public/Granted literature
- US20130128943A1 APPARATUS AND METHOD THEREOF FOR COMPENSATING FOR GAIN CHANGES OF N-PAM MODULATE SIGNALS Public/Granted day:2013-05-23
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