Title :
Greener Copper with Dynamic Spectrum Management
Author :
Cioffi, J.M. ; Zou, H. ; Chowdhery, A. ; Lee, W. ; Jagannathan, S.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., Stanford, CA
Abstract :
Power-saving benefits of Dynamic Spectrum Management (DSM) result from its increased robustness to channel and noise changes, as in this paper. A proposed intermittent noise model enables evaluation of the performance of DSM algorithms. Polite Level-1 DSM algorithm consumes much less power than non-polite DSL management algorithms in the presence of intermittent noise. Secondly, a proposed robust level- 2 DSM algorithm compares favorably with methods that change the PSDMASK only upon modem initialization or retraining. The proposed robust level-2 DSM algorithm significantly reduces power consumption. This DSM reduction of DSL transmit power can be even more significant when considering the additional loss of robustness and stability of non-DSM methods.
Keywords :
digital subscriber lines; telecommunication network management; DSL transmit power; PSDMASK; dynamic spectrum management; greener copper; intermittent noise model; non-polite DSL management algorithms; polite Level-1 DSM algorithm; power consumption; power-saving benefits; Copper; DSL; Energy consumption; Energy management; Modems; Noise level; Noise robustness; Propagation losses; Radio spectrum management; Robust stability;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.1092