Title :
Power back-off strategies for very high bit rate digital subscriber line transmission systems
Author :
Friese, Mathias ; Havezov, Peter
Author_Institution :
T-Nova Deutsche Telekom Innovationsgesellschaft mbH, Darmstadt, Germany
fDate :
6/21/1905 12:00:00 AM
Abstract :
Very high-bit rate digital subscriber line (VDSL) transmission systems are performance limited to a significant degree by far-end crosstalk (FEXT). In a deployment scenario, where the customer equipment (network termination, NT) is physically placed at different locations along a cable, the transmit power of each modem has to be chosen carefully (backed-off) to obtain satisfactory performance for each modem in the cable. A new approach, based on a numerical optimization procedure is presented and possible strategies for setting the individual power back-off (PBO) levels are discussed
Keywords :
crosstalk; digital subscriber lines; modems; optimisation; FEXT; VDSL transmission systems; customer equipment; far-end crosstalk; modem; network termination; numerical optimization; performance; power back-off strategies; transmit power; very high bit rate digital subscriber line; Attenuation; Background noise; Bit rate; Crosstalk; DSL; Frequency estimation; Modems; Power cables; Propagation losses; Telephony;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Conference_Location :
Rio de Janeireo
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.829953
