Title :
Echo cancellation in a Power Line modem in the presence of abrupt channel variations
Author :
Tripodi, C. ; Ferrari, Giorgio ; Pighi, Riccardo ; Raheli, R.
Author_Institution :
Dept. of Inf. Eng., Univ. of Parma, Parma, Italy
fDate :
March 30 2014-April 2 2014
Abstract :
We discuss the effects of abrupt channel variations on the performance of echo cancellation in a Power Line Communications (PLC) scenario. Our work takes into account field measures of high voltage PLC channels and considers an adaptive Least Mean Square (LMS) echo canceller in a full-duplex communication system. We investigate the LMS convergence speed, also in the presence of impulse noise, and propose a modified adaptive LMS algorithm in order to improve the performance in the presence of abrupt echo channel variations.
Keywords :
carrier transmission on power lines; echo suppression; least mean squares methods; modems; abrupt echo channel variations; adaptive least mean square algorithm; convergence speed; echo cancellation; full-duplex communication system; high voltage PLC channels; modified adaptive LMS algorithm; power line communications scenario; power line modem; Convergence; Echo cancellers; Least squares approximations; Power measurement; Signal to noise ratio; Vectors; Echo cancellation; abrupt channel variations; impulse noise; least mean square algorithm (LMS); power line communications;
Conference_Titel :
Power Line Communications and its Applications (ISPLC), 2014 18th IEEE International Symposium on
Conference_Location :
Glasgow
DOI :
10.1109/ISPLC.2014.6812368
