Placement of a transmit predistortion filter with respect to a data access arrangement

作者: Donald R. Laturell , Steven B. Witmer , Paul D. Hendricks , Lane A. Smith

DOI:

关键词: Voltage-controlled filterElectronic engineeringFilter (video)Root-raised-cosine filterDigital delay lineHalf-band filterBand-stop filterAdaptive filterActive filterEngineering

摘要: The present invention provides a digital pre-distortion filter in arrangement with data access (DAA) on the component side (e.g., modem chipset). This of outside DAA allows processes such as emulation central office impedance to remain unaffected by transmitted signal, allowing dynamic range signal be flattened minimize return loss without complicating transfer function complex load. In case filter, placement an analog-to-digital (A/D) digital-to-analog (D/A) loop also minimizes noise otherwise associated use filter. Thus, benefits can gained interfering impedance, and causing significant amount signal.

参考文章(5)
Benjamin Maytal, Aryeh Lezerovitz, Audio/modem interface unit ,(1997)
Henri Albert Julia Verhille, Gustaaf Alfons Leon Geernaert, Joannes Hendrik Palmyre Maria Spaenjers, Daniel Simon Gregoire Hoefkens, Eduard Christiaan Maria Boeykens, Adjustable echo canceller ,(1987)
W. Kurt Dobson, Donald L. Chaffee, Multi-carrier high speed modem ,(1990)
Lane A. Smith, Donald Raymond Laturell, Tony S. El-Kik, Synchronizing data transfer protocol across high voltage interface ,(1998)